Patent Id | Score | Title | Patent Type | Publication Date | Priority Date | Family Id | Search Efficiency | Original Assignee | Current Assignee |
|---|---|---|---|---|---|---|---|---|---|
| US3914716A | 1.316 | Tone control circuit | GRANT | 1975-10-21 | 1973-10-26 | 14878783 | Great | Sansui Electric Co Ltd | Sansui Electric Co Ltd |
| US4823094A | 1.264 | Dual-band high-fidelity amplifier | GRANT | 1989-04-18 | 1986-05-02 | 26858460 | Great | ||
| EP0837557A1 | 1.262 | High frequency intensity amplifier circuitry arrangement for indoor cable television | GRANT | 1998-04-22 | 1996-10-11 | 27155754 | Great | ||
| US6304144B1 | 1.232 | Differential amplification circuit | GRANT | 2001-10-16 | 1998-07-10 | 16337387 | Great | Fujitsu Ltd | Fujitsu Ltd |
| EP1024590A1 | 1.221 | Frequency translation circuitry | GRANT | 2000-08-02 | 1999-01-29 | 8241203 | Great | Nokia of America Corp | Nokia of America Corp |
| EP1467481A1 | 1.192 | Glitch-free controllable RF power amplifier | GRANT | 2004-10-13 | 2003-04-09 | 32864981 | Great | Sony Ericsson Mobile Communications AB | Sony Corp, Sony Mobile Communications AB |
| EP1480332A2 | 1.190 | Integratable voltage-controlled rf power amplifier | GRANT | 2004-11-24 | 2003-05-19 | 33095661 | Great | Samsung Electronics Co Ltd | Samsung Electronics Co Ltd |
| US6522195B2 | 1.188 | Low noise amplifier having bypass circuitry | GRANT | 2003-02-18 | 2000-12-07 | 24942422 | Great | Motorola Inc | NXP USA Inc |
| EP0080234A1 | 1.187 | Filter circuit incorporating a differential amplifier | GRANT | 1983-06-01 | 1981-11-20 | 19838416 | Great | Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| US5914640A | 1.185 | Method and system for matching the input impedance of an RF amplifier an antenna to impedance | GRANT | 1999-06-22 | 1996-02-29 | 26683748 | Great | Texas Instruments Inc | Texas Instruments Inc |
| US4025867A | 1.181 | Capacitance magnification circuit | GRANT | 1977-05-24 | 1976-06-16 | 24797943 | Great | Bell Telephone Laboratories Inc | AT&T Corp |
| EP0700597A1 | 1.179 | DIFFERENTIAL AUDIO LINE RECEIVER | GRANT | 1996-03-13 | 1993-04-22 | 21968211 | Great | ||
| US6940969B2 | 1.178 | Capacitor cancellation method and apparatus | GRANT | 2005-09-06 | 2001-12-13 | 21798318 | Great | Legerity Inc | Microsemi Semiconductor US Inc |
| EP0845871A2 | 1.178 | Intermediate frequency amplifier circuit for use in receive and transmit mode | GRANT | 1998-06-03 | 1996-11-20 | 25027749 | Great | Rockwell Science Center LLC, Skyworks Solutions Inc | Rockwell Science Center LLC, Skyworks Solutions Inc |
| EP1037053A1 | 1.177 | Amplifier for piezoelectric acceleration sensor | GRANT | 2000-09-20 | 1999-03-17 | 13467781 | Great | Murata Manufacturing Co Ltd | Murata Manufacturing Co Ltd |
| US5568561A | 1.175 | Differential line receiver with common-mode AC bootstrapping | GRANT | 1996-10-22 | 1993-04-22 | 23429422 | Great | MIDDLESEX SAVINGS BANK | MIDDLESEX SAVINGS BANK |
| EP0740413A1 | 1.174 | Second order active differential filter | GRANT | 1996-10-30 | 1995-04-26 | 9478621 | Great | STMicroelectronics SA, SGS Thomson Microelectronics SA | STMicroelectronics SA |
| US6127886A | 1.170 | Switched amplifying device | GRANT | 2000-10-03 | 1997-10-30 | 25503786 | Great | Whitaker LLC | MACOM Technology Solutions Holdings Inc |
| US6586993B2 | 1.165 | Impedance matching low noise amplifier having a bypass switch | GRANT | 2003-07-01 | 2000-11-08 | 22932199 | Great | Research in Motion Ltd | BlackBerry Ltd |
| US6731174B2 | 1.162 | Radio frequency power amplifier device | GRANT | 2004-05-04 | 2002-09-12 | 31991413 | Great | Motorola Inc | Motorola Solutions Inc |
| US6253070B1 | 1.151 | Diode amplifier bypass circuit | GRANT | 2001-06-26 | 1998-07-22 | 22395208 | Great | Denso Corp | Denso Corp |
| EP1865609A1 | 1.150 | SIGNAL ATTENUATING CIRCUIT | GRANT | 2007-12-12 | 2005-03-31 | 37073372 | Great | Pioneer Corp | Pioneer Corp |
| US3636466A | 1.149 | BUILDING BLOCK FOR ACTIVE RC FILTERS | GRANT | 1972-01-18 | 1969-03-11 | 20261879 | Great | Telefonaktiebolaget LM Ericsson AB | Telefonaktiebolaget LM Ericsson AB |
| US3992590A | 1.145 | Matrix amplifying circuit | GRANT | 1976-11-16 | 1974-04-15 | 12593069 | Great | Victor Company of Japan Ltd | Victor Company of Japan Ltd |
| US6900693B2 | 1.142 | Power amplifying apparatus and radio communications apparatus using same | GRANT | 2005-05-31 | 2002-05-20 | 29417069 | Great | Sony Corp | Sony Corp |
| US7298203B2 | 1.139 | Amplification system capable of reducing DC offset | GRANT | 2007-11-20 | 2005-03-16 | 37009676 | Great | Sunplus Technology Co Ltd | Sunplus Technology Co Ltd |
| US5327027A | 1.135 | Circuit for multiplying the value of a capacitor | GRANT | 1994-07-05 | 1991-12-24 | 25216487 | Great | Triquint Semiconductor Inc | Qorvo US Inc |
| WO1995001676A1 | 1.131 | RADIO FREQUENCY AMPLIFIER WITH VARIABLE GAIN CONTROL | APPLICATION | 1995-01-12 | 1993-07-02 | 22187961 | Great | ||
| EP1367712B1 | 1.131 | Amplifier and radio frequency tuner | GRANT | 2008-03-19 | 2002-05-29 | 9937610 | Great | Zarlink Semiconductor Ltd | Microsemi Semiconductor Ltd, Intel Corp |
| US6680647B2 | 1.129 | Low noise amplifier circuit with phase matched switch topology | GRANT | 2004-01-20 | 2001-12-13 | 21797587 | Great | Agilent Technologies Inc | Avago Technologies International Sales Pte Ltd |
| EP0851576A2 | 1.128 | High-frequency amplifier | GRANT | 1998-07-01 | 1996-12-24 | 27331457 | Great | Murata Manufacturing Co Ltd | Murata Manufacturing Co Ltd |
| EP1215816A2 | 1.127 | Power controllers for amplitude modulation | GRANT | 2002-06-19 | 2000-11-07 | 24847201 | Great | Linear Technology LLC | Linear Technology LLC |
| US4523155A | 1.127 | Temperature compensated automatic output control circuitry for RF signal power amplifiers with wide dynamic range | GRANT | 1985-06-11 | 1983-05-04 | 27050461 | Great | Motorola Inc | Motorola Solutions Inc |
| EP0749205B1 | 1.126 | Switched capacitor gain stage | GRANT | 2000-03-22 | 1995-06-12 | 23943493 | Great | Motorola Inc | Motorola Solutions Inc |
| EP0482291A1 | 1.124 | Isolator circuit for an audio system | GRANT | 1992-04-29 | 1990-10-25 | 17724358 | Great | Pioneer Electronic Corp | Pioneer Corp |
| EP0713288A2 | 1.124 | Radio frequency detector circuit | GRANT | 1996-05-22 | 1994-11-17 | 10764515 | Great | AT&T Global Information Solutions Co, NCR International Inc, AT&T Global Information Solutions International Inc | NCR International Inc |
| US6697611B1 | 1.123 | Method and apparatus for performing DC offset cancellation in a receiver | GRANT | 2004-02-24 | 2000-11-14 | 31496251 | Great | Intel Corp | Intel Corp |
| US4291276A | 1.123 | Equalizer amplifier | GRANT | 1981-09-22 | 1978-11-16 | 15658390 | Great | Nippon Gakki Co Ltd | Nippon Gakki Co Ltd |
| US5252929A | 1.123 | RF power amplifier | GRANT | 1993-10-12 | 1991-05-30 | 14932023 | Great | Panasonic Corp | Panasonic Corp |
| EP0280516A2 | 1.113 | Differential amplifier circuit | GRANT | 1988-08-31 | 1987-02-23 | 10612760 | Great | British Aerospace PLC | BAE Systems PLC |
| US4331927A | 1.113 | Noninverting amplifier circuit with low input impedance | GRANT | 1982-05-25 | 1978-12-23 | 6058317 | Great | Licentia Patent Verwaltungs GmbH | Deutsche Thomson oHG |
| EP0413643A1 | 1.108 | Amplifier circuit with determined input impedance and with different transconductance values | GRANT | 1991-02-20 | 1989-08-16 | 9384905 | Great | SGS Thomson Microelectronics SA | STMicroelectronics SA |
| EP1206037A1 | 1.108 | Digital signal receiving tuner | GRANT | 2002-05-15 | 2000-11-14 | 18820169 | Great | Sharp Corp | Sharp Corp |
| EP0688096A1 | 1.106 | Integrated circuit | GRANT | 1995-12-20 | 1994-06-16 | 6520754 | Great | Temic Telefunken Microelectronic GmbH | Conti Temic Microelectronic GmbH, Atmel Germany GmbH |
| WO2003010886A1 | 1.106 | AMPLIFICATION CIRCUIT | APPLICATION | 2003-02-06 | 2001-07-23 | 19054631 | Great | ||
| WO2003012982A2 | 1.106 | TUNED DAMPING CIRCUIT FOR POWER AMPLIFIER OUTPUT | APPLICATION | 2003-02-13 | 2001-08-01 | 25445074 | Great | ||
| EP1788700A1 | 1.106 | METHOD FOR DOUBLE SAMPLING LOOP NEGATIVE FEEDBACK AND DOUBLE SAMPLING NEGATIVE FEEDBACK AMPLIFIER | GRANT | 2007-05-23 | 2004-08-27 | 35967160 | Great | ||
| EP0136482B1 | 1.105 | NOISE REDUCTION BY LINEAR INTERPOLATION USING A DUAL FUNCTION AMPLIFIER CIRCUIT | GRANT | 1989-05-03 | 1983-08-08 | 15367035 | Great | Victor Company of Japan Ltd | Victor Company of Japan Ltd |
| EP1406382A2 | 1.103 | Low noise amplifier with fixed loss bypass | GRANT | 2004-04-07 | 2002-10-02 | 31998201 | Great | Northrop Grumman Corp | Northrop Grumman Corp |
| EP0626111A1 | 1.103 | AMPLIFIER CIRCUIT | GRANT | 1994-11-30 | 1992-02-13 | 10710321 | Great | AUDIO SOLUTIONS Ltd | AUDIO SOLUTIONS Ltd |
| EP1095449A1 | 1.100 | AMPLIFIER WITH DYNAMICALLY ADAPTABLE SUPPLY CURRENT | GRANT | 2001-05-02 | 1998-05-18 | 27373771 | Great | Omnipoint Corp | Xircom Wireless Inc |
| EP0127347A2 | 1.098 | Wide bandwidth signal coupling circuit having a variable DC voltage-level shift from input to output | GRANT | 1984-12-05 | 1983-05-25 | 23978862 | Great | Tektronix Inc | Tektronix Inc |
| EP0715404B1 | 1.098 | High frequency amplifying circuit | GRANT | 2000-09-27 | 1994-11-30 | 17844409 | Great | NEC Corp | NEC Corp |
| EP0447559A1 | 1.097 | VERTICAL DEFLECTION CIRCUIT | GRANT | 1991-09-25 | 1989-10-04 | 17337147 | Great | Toshiba Corp | Toshiba Corp |
| WO2006057104A1 | 1.097 | SEMICONDUCTOR DEVICE AND POWER AMPLIFIER | APPLICATION | 2006-06-01 | 2004-11-29 | 36497848 | Great | ||
| US7327301B2 | 1.096 | Single end to differential signal converter | GRANT | 2008-02-05 | 2003-04-10 | 33127911 | Great | Agilent Technologies Inc | Keysight Technologies Inc |
| US6842518B2 | 1.096 | Frequency-dependent impedance synthesis for DSL interface circuits | GRANT | 2005-01-11 | 2001-12-13 | 21785070 | Great | Legerity Inc | Microsemi Semiconductor US Inc |
| WO2006035896A1 | 1.096 | DIGITAL SIGNAL OFFSET ADJUSTER AND PULSE PATTERN GENERATOR USING SAME | APPLICATION | 2006-04-06 | 2004-09-30 | 36119042 | Great | ||
| EP0516134A1 | 1.095 | RF power amplifier | GRANT | 1992-12-02 | 1991-05-30 | 15615283 | Great | NEC Corp | NEC Corp |
| US4318054A | 1.095 | Input circuit of audio amplifier | GRANT | 1982-03-02 | 1979-02-07 | 27280034 | Great | Nippon Gakki Co Ltd | Nippon Gakki Co Ltd |
| EP1446870A1 | 1.094 | TRANSIENT DAMPING ARRANGEMENT | GRANT | 2004-08-18 | 2001-11-08 | 20285915 | Great | Telefonaktiebolaget LM Ericsson AB | Telefonaktiebolaget LM Ericsson AB |
| EP1654801B1 | 1.090 | INTEGRATED POWER AMPLIFIER CIRCUIT | GRANT | 2006-12-27 | 2003-06-27 | 33452618 | Great | Sige Semiconductor US Corp | Sige Semiconductor US Corp |
| US6002299A | 1.090 | High-order multipath operational amplifier with dynamic offset reduction controlled saturation current limiting and current feedback for enhanced conditional stability | GRANT | 1999-12-14 | 1997-06-10 | 25359548 | Great | Cirrus Logic Inc | Cirrus Logic Inc |
| US5218319A | 1.088 | Differential amplifier and active filter using the same | GRANT | 1993-06-08 | 1991-05-24 | 14776557 | Great | Fujitsu Ltd | Fujitsu VLSI Ltd, Fujitsu Semiconductor Ltd |
| EP0842561A1 | 1.087 | DEVICE WITH AMPLIFIER MEANS INCLUDING SAFETY MEANS AND WITH FILTER MEANS CONNECTED TO THE AMPLIFIER MEANS | GRANT | 1998-05-20 | 1996-05-31 | 8226200 | Great | Koninklijke Philips Electronics NV, Philips Electronics NV | Koninklijke Philips NV |
| WO2003023420A1 | 1.087 | IMPEDANCE MEASURING CIRCUIT ITS METHOD AND CAPACITANCE MEASURING CIRCUIT | APPLICATION | 2003-03-20 | 2001-09-06 | 19096476 | Great | ||
| WO1997030513A1 | 1.086 | HIGH-POWER AMPLIFLIER USING PARALLEL TRANSISTORS | APPLICATION | 1997-08-21 | 1996-02-14 | 24407240 | Great | ||
| EP0860096B1 | 1.086 | CIRCUIT ARRANGEMENT | GRANT | 2002-07-24 | 1996-09-11 | 8224373 | Great | Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| US6137354A | 1.086 | Bypassable amplifier | GRANT | 2000-10-24 | 1998-05-18 | 22159775 | Great | Omnipoint Corp | Micron Technology Inc |
| US5414313A | 1.086 | Dual-mode logarithmic amplifier having cascaded stages | GRANT | 1995-05-09 | 1993-02-10 | 21775239 | Great | Watkins Johnson Co | Watkins Johnson Co, Cobham Defense Electronic Systems Corp |
| WO2000070755A1 | 1.085 | SIGNAL AMPLIFIER AND BALANCED INPUT/OUTPUT DIFFERENTIAL AMPLIFIER | APPLICATION | 2000-11-23 | 1999-05-12 | 15057648 | Great | ||
| US6792121B2 | 1.085 | Audio signal amplifier circuit and portable telephone set and portable electronic device using the same audio signal amplifier circuit | GRANT | 2004-09-14 | 2000-04-17 | 26590226 | Great | Rohm Co Ltd | Rohm Co Ltd |
| EP1349267B1 | 1.085 | AMPLIFIER CIRCUIT FOR AM BROADCASING | GRANT | 2007-03-21 | 2000-12-28 | 18865267 | Great | Nigata Semitsu Co Ltd | NSC Co Ltd, Ricoh Co Ltd |
| EP0287057A2 | 1.083 | Automatic loudness control circuit | GRANT | 1988-10-19 | 1987-04-17 | 27296702 | Great | Sanyo Electric Co Ltd | Sanyo Electric Co Ltd |
| US6515542B1 | 1.083 | Differential intermediate frequency (IF) amplifier with narrow band noise dithering for driving high speed analog-to-digital conversion and communication applications | GRANT | 2003-02-04 | 2000-05-26 | 26902370 | Great | Analog Devices Inc | Analog Devices Inc |
| EP1576724A2 | 1.080 | RF POWER AMPLIFIER EMPLOYING BIAS CIRCUIT TOPOLOGIES FOR MINIMIZATION OF RF AMPLIFIER MEMORY EFFECTS | GRANT | 2005-09-21 | 2002-04-24 | 29716114 | Great | Powerwave Technologies Inc | Powerwave Technologies Inc |
| US6121831A | 1.079 | Apparatus and method for removing offset in a gain circuit | GRANT | 2000-09-19 | 1999-05-12 | 23203307 | Great | Level One Communications Inc | Level One Communications Inc |
| EP0284152A2 | 1.078 | Amplitude modulation apparatus | GRANT | 1988-09-28 | 1987-03-20 | 13236855 | Great | Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| US6703887B2 | 1.078 | Long time-constant integrator | GRANT | 2004-03-09 | 2001-08-31 | 26926668 | Great | Sequoia Communications | NXP BV |
| EP0836273A1 | 1.077 | Semiconductor device | GRANT | 1998-04-15 | 1996-10-14 | 17496239 | Great | Oki Electric Industry Co Ltd | Oki Electric Industry Co Ltd |
| US6121840A | 1.075 | High-frequency amplifier | GRANT | 2000-09-19 | 1996-12-24 | 27284013 | Great | Murata Manufacturing Co Ltd | Murata Manufacturing Co Ltd |
| US5793255A | 1.073 | Tuned RF amplifier | GRANT | 1998-08-11 | 1996-07-12 | 24724369 | Great | ACS Wireless Inc | ACS Wireless Inc |
| EP1480333A2 | 1.073 | High frequency differential amplifier differential mixer differential oscillator and radio circuit using same | GRANT | 2004-11-24 | 2003-05-22 | 33095464 | Great | Panasonic Corp | Panasonic Corp |
| EP0822657A2 | 1.071 | Fully balanced analog circuit | GRANT | 1998-02-04 | 1996-07-29 | 16401484 | Great | Toshiba Corp | Toshiba Corp |
| EP0464245A1 | 1.071 | Circuit arrangement for a level converter from TTL input signals to ECL output signals | GRANT | 1992-01-08 | 1990-07-04 | 25956882 | Great | Siemens AG | Siemens AG |
| US5095282A | 1.069 | Differential amplifier apparatus | GRANT | 1992-03-10 | 1990-08-23 | 24287991 | Great | Nvision Inc | Nvision Inc |
| US6008698A | 1.067 | Amplifier with dynamically adaptable supply current | GRANT | 1999-12-28 | 1998-05-18 | 22159533 | Great | Omnipoint Corp | Intel Corp |
| US4801889A | 1.065 | Amplifier for amplifying input signal voltage and supplying the same | GRANT | 1989-01-31 | 1986-10-17 | 17170713 | Great | Sanyo Electric Co Ltd | Sanyo Electric Co Ltd |
| EP1278302A2 | 1.064 | RF protection on integrated circuit | GRANT | 2003-01-22 | 2001-06-27 | 8561516 | Great | Micro Analog Systems Oy | Micro Analog Systems Oy |
| US4776040A | 1.064 | Superheterodyne receiver | GRANT | 1988-10-04 | 1984-09-03 | 15114633 | Great | Pioneer Electronic Corp | Pioneer Corp |
| EP1267487A1 | 1.064 | High frequency amplifier | GRANT | 2002-12-18 | 2001-06-15 | 4557405 | Great | Contraves Space AG | RUAG Space AG |
| US7398070B2 | 1.061 | Variable gain amplifying circuit with matchable input/output impedance | GRANT | 2008-07-08 | 2004-11-11 | 36499357 | Great | Alps Electric Co Ltd | Alps Alpine Co Ltd |
| US6081161A | 1.060 | Amplifier with dynamatically adaptable supply voltage | GRANT | 2000-06-27 | 1998-05-18 | 22159769 | Great | Omnipoint Corp | Intel Corp |
| EP1184671B1 | 1.060 | Power detector using FET transistor | GRANT | 2006-12-06 | 2000-08-24 | 8169639 | Great | Sony Deutschland GmbH, Sony Corp | Sony Deutschland GmbH, Sony Corp |
| EP0283143A2 | 1.059 | Power amplifier having low intermodulation distortion | GRANT | 1988-09-21 | 1987-03-18 | 21843366 | Great | Rockwell International Corp | Boeing North American Inc |
| US6943631B2 | 1.058 | DC-coupled multi-stage amplifier using all-pass resistive/capacitive network for level shifting | GRANT | 2005-09-13 | 2003-12-23 | 34679251 | Great | Agilent Technologies Inc | Agilent Technologies Inc |
| US5859563A | 1.057 | Low-noise low-impedance voltage reference | GRANT | 1999-01-12 | 1997-02-13 | 25179694 | Good | Texas Instruments Inc | Texas Instruments Inc |
| US6967528B2 | 1.055 | Variable gain amplifier | GRANT | 2005-11-22 | 2002-12-12 | 32396319 | Good | New Japan Radio Co Ltd | New Japan Radio Co Ltd |
| US4491802A | 1.055 | Wide-band amplifier system | GRANT | 1985-01-01 | 1981-06-24 | 14197964 | Good | Iwatsu Electric Co Ltd | Iwatsu Electric Co Ltd |
| EP0147230A2 | 1.054 | Subscriber line interface circuit having an impedance synthesizer | GRANT | 1985-07-03 | 1983-12-28 | 17157438 | Good | NEC Corp | NEC Corp |
| EP1713177A1 | 1.054 | Variable gain differential amplifier | GRANT | 2006-10-18 | 2005-04-15 | 35429391 | Good | STMicroelectronics SA | STMicroelectronics SA |
| US7106124B2 | 1.054 | Field emission RF amplifier | GRANT | 2006-09-12 | 2004-02-14 | 34858717 | Good | Samsung SDI Co Ltd | Samsung SDI Co Ltd |
| US4275357A | 1.053 | Active filter | GRANT | 1981-06-23 | 1978-10-27 | 15088953 | Good | Murata Manufacturing Co Ltd | Murata Manufacturing Co Ltd |
| WO2006109731A1 | 1.053 | HIGH FREQUENCY AMPLIFIER AND TRANSMITTING/RECEIVING SYSTEM | APPLICATION | 2006-10-19 | 2005-04-08 | 37087004 | Good | ||
| EP1239586A1 | 1.053 | High-frequency-signal switching circuit suppressing high-frequency-signal distortion | GRANT | 2002-09-11 | 2001-02-28 | 18915152 | Good | Alps Electric Co Ltd | Alps Alpine Co Ltd |
| EP0546658A1 | 1.052 | Method and apparatus for controlling RF spectral interference into adjacent channels in an RF transmitter | GRANT | 1993-06-16 | 1991-11-13 | 25153222 | Good | Ericsson Inc | Ericsson Inc |
| US5592344A | 1.051 | AC bias control circuit for magnetic recording head | GRANT | 1997-01-07 | 1993-10-06 | 17211645 | Good | Sony Corp | Sony Corp |
| EP0863607A1 | 1.051 | Method and apparatus for linearizing an efficient class D/E power amplifier using delta modulation | GRANT | 1998-09-09 | 1997-03-03 | 25205527 | Good | Hewlett Packard Co | HP Inc, Agilent Technologies Inc |
| US6906584B1 | 1.051 | Switchable gain amplifier having a high-pass filter pole | GRANT | 2005-06-14 | 2003-12-10 | 34634469 | Good | RF Micro Devices Inc | Qorvo US Inc |
| EP1533894A1 | 1.050 | SEMICONDUCTOR INTEGRATED CIRCUIT AND SEMICONDUCTOR INTEGRATED CIRCUIT MANUFACTURING METHOD | GRANT | 2005-05-25 | 2002-07-08 | 30112439 | Good | Toyota Industries Corp, Nigata Semitsu Co Ltd | Toyota Industries Corp, NSC Co Ltd |
| US6937097B2 | 1.050 | High-frequency power amplifier having differential inputs | GRANT | 2005-08-30 | 2003-09-24 | 34309519 | Good | Institute of Information Tech Assessment, Tachyonics Corp | National Research Foundation Of Korea Nrf, Tachyonics Corp |
| US6822514B1 | 1.050 | Amplifier with miller-effect compensation for use in closed loop system such as low dropout voltage regulator | GRANT | 2004-11-23 | 2002-09-16 | 33434666 | Good | National Semiconductor Corp | National Semiconductor Corp |
| EP0742640A1 | 1.049 | A front-end circuit | GRANT | 1996-11-13 | 1995-04-12 | 13898074 | Good | Panasonic Corp | Panasonic Corp |
| US6404284B1 | 1.049 | Amplifier bias adjustment circuit to maintain high-output third-order intermodulation distortion performance | GRANT | 2002-06-11 | 2001-04-19 | 25275966 | Good | Anadigics Inc | Skyworks Solutions Inc |
| EP1032120A2 | 1.047 | Power amplifier power control method for power amplifier and communication equipment | GRANT | 2000-08-30 | 1999-02-26 | 26390428 | Good | Panasonic Corp | Panasonic Corp |
| EP1149466A1 | 1.047 | AMPLIFIER | GRANT | 2001-10-31 | 1999-10-01 | 8240700 | Good | Koninklijke Philips Electronics NV | Koninklijke Philips NV, NXP BV |
| US5392317A | 1.046 | Method and apparatus extracting pulse signal | GRANT | 1995-02-21 | 1991-02-22 | 13157391 | Good | Mitsubishi Electric Corp | Mitsubishi Electric Corp |
| US5952878A | 1.045 | Second order differential highpass filter | GRANT | 1999-09-14 | 1997-01-23 | 21626338 | Good | National Science Council | National Science Council |
| EP1599936B1 | 1.044 | TRANSIMPEDANCE AMPLIFIER WITH A HIGH GAIN BANDWIDTH FOR CONVERTING A DAC-OUTPUT CURRENT | GRANT | 2010-05-19 | 2003-03-06 | 32864220 | Good | Infineon Technologies AG | Infineon Technologies AG |
| US6462622B1 | 1.044 | High-frequency amplifier and high-frequency multistage amplifier | GRANT | 2002-10-08 | 2001-05-29 | 19004302 | Good | Mitsubishi Electric Corp | Mitsubishi Electric Corp, SPX Corp |
| EP0079922A1 | 1.043 | RADIO TRANSMITTER MODULATION CONTROL CIRCUITRY. | GRANT | 1983-06-01 | 1981-05-26 | 23017297 | Good | Motorola Inc | Motorola Solutions Inc |
| EP1519481A1 | 1.042 | AGC CIRCUIT | GRANT | 2005-03-30 | 2002-07-03 | 30112303 | Good | Toyota Industries Corp, Nigata Semitsu Co Ltd | Toyota Industries Corp, NSC Co Ltd |
| EP0755116B1 | 1.041 | Circuit for smoothing a voltage | GRANT | 1999-02-24 | 1995-07-19 | 7767263 | Good | Siemens AG | Siemens AG |
| US4871976A | 1.040 | Amplifier circuit including single capacitor for DC differential-input balance | GRANT | 1989-10-03 | 1987-05-27 | 26465750 | Good | Mitsubishi Electric Corp | Mitsubishi Electric Corp |
| US6233440B1 | 1.040 | RF power amplifier with variable bias current | GRANT | 2001-05-15 | 1998-08-05 | 22442470 | Good | Triquint Semiconductor Inc | Qorvo US Inc |
| EP0236866B1 | 1.040 | CAPACITANCE MULTIPLYING CIRCUIT ESPECIALLY FOR AN ELECTRONIC JUNCTION | GRANT | 1990-09-05 | 1986-03-04 | 9332737 | Good | Alcatel CIT SA | Alcatel CIT SA |
| EP1156582A2 | 1.040 | Transmitter/receiver chain impedance optimization | GRANT | 2001-11-21 | 2000-05-16 | 24284999 | Good | Nokia Mobile Phones Ltd, Nokia Oyj | Nokia Mobile Phones Ltd, Nokia Oyj |
| EP1658674A2 | 1.038 | POWER DISTRIBUTION AND BIASING IN RF SWITCH-MODE POWER AMPLIFIERS | GRANT | 2006-05-24 | 2003-07-30 | 34104224 | Good | Tropian Inc | Panasonic Corp, Panasonic Intellectual Property Management Co Ltd, Intel Corp, Tropian Inc |
| EP0553300A1 | 1.038 | LINEAR GAIN CONTROL AMPLIFIER | GRANT | 1993-08-04 | 1990-10-15 | 24397158 | Good | Qualcomm Inc | Qualcomm Inc |
| US5661434A | 1.037 | High efficiency multiple power level amplifier circuit | GRANT | 1997-08-26 | 1995-05-12 | 23746263 | Good | Eudyna Devices USA Inc | FUJITZU COMPOUND SEMICONDUCTOR Inc, Sumitomo Electric Device Innovations Inc |
| EP0731345A1 | 1.036 | SIGNAL PROCESSOR FOR PYROELECTRIC INFRARED SENSOR | GRANT | 1996-09-11 | 1994-09-28 | 26530906 | Good | Murata Manufacturing Co Ltd | Murata Manufacturing Co Ltd |
| EP1202446A2 | 1.036 | Power amplifier | GRANT | 2002-05-02 | 2000-10-23 | 18800830 | Good | Panasonic Corp | Panasonic Corp |
| WO2002001710A1 | 1.035 | INTEGRATED CIRCUIT WITH AN ANALOGUE AMPLIFIER | APPLICATION | 2002-01-03 | 2000-06-28 | 7647107 | Good | ||
| US5300896A | 1.035 | Bootstrapped AC-coupled differential amplifier | GRANT | 1994-04-05 | 1992-10-16 | 25505964 | Good | ||
| EP1162731A2 | 1.034 | Microwave amplifying circuit microwave amplifying device and distortion compensation circuit | GRANT | 2001-12-12 | 2000-06-08 | 18674917 | Good | Sumitomo Electric Industries Ltd | Sumitomo Electric Industries Ltd |
| US5793551A | 1.032 | Amplifier having a differential input capacitance cancellation circuit | GRANT | 1998-08-11 | 1995-06-07 | 23895310 | Good | VTC Inc | Avago Technologies International Sales Pte Ltd, VTC Inc |
| US5041797A | 1.031 | Micro-power gain lattice | GRANT | 1991-08-20 | 1990-11-19 | 24464618 | Good | Harris Corp | Harris Corp |
| US6396343B2 | 1.031 | Low-frequency high-gain amplifier with high DC-offset voltage tolerance | GRANT | 2002-05-28 | 2000-01-28 | 20430520 | Good | Ngee Ann Polytechnic | Ngee Ann Polytechnic |
| EP0438257A2 | 1.031 | High frequency amplifier | GRANT | 1991-07-24 | 1990-01-16 | 11646559 | Good | Fujitsu Ltd | Fujitsu Ltd |
| EP0438911A1 | 1.031 | Integrated filter circuit | GRANT | 1991-07-31 | 1990-01-02 | 23826339 | Good | Motorola Inc | Motorola Solutions Inc |
| EP1442518B1 | 1.031 | OPERATIONAL AMPLIFIER WITH CHOPPED INPUT TRANSISTOR PAIR | GRANT | 2009-09-23 | 2001-10-25 | 8181138 | Good | NXP BV | NXP BV |
| US6480178B1 | 1.031 | Amplifier circuit and liquid-crystal display unit using the same | GRANT | 2002-11-12 | 1997-08-05 | 16591177 | Good | Toshiba Corp | Toshiba Corp |
| EP0823779A2 | 1.030 | High-frequency amplifier | GRANT | 1998-02-11 | 1996-08-09 | 16866097 | Good | Murata Manufacturing Co Ltd | Murata Manufacturing Co Ltd |
| US4782305A | 1.029 | Differential input-single output two pole filter implemented by a single amplifier | GRANT | 1988-11-01 | 1987-10-02 | 22298209 | Good | Motorola Inc | NXP USA Inc |
| EP0691734A1 | 1.029 | Amplifier circuit for high frequency signals | GRANT | 1996-01-10 | 1994-07-08 | 6522680 | Good | Siemens AG | Infineon Technologies AG |
| US6831510B2 | 1.029 | Continuous low-frequency error cancellation in a high-speed differential amplifier | GRANT | 2004-12-14 | 2003-02-06 | 32823880 | Good | Fujitsu Ltd | Fujitsu Ltd |
| EP1469592B1 | 1.029 | Apparatus for and method of controlling the base bias voltage of an HBT | GRANT | 2007-06-13 | 2003-04-14 | 32908748 | Good | MA Com Inc | MA Com Inc |
| US4517523A | 1.029 | Oscilloscope trigger circuit combining wideband trigger signal amplification and trigger coupling mode selection | GRANT | 1985-05-14 | 1982-10-22 | 16159153 | Good | Tektronix Inc | Techsearch LLC |
| US4975653A | 1.028 | FM detector using switched capacitor circuits | GRANT | 1990-12-04 | 1989-08-29 | 23662815 | Good | Delco Electronics LLC | Delco Electronics LLC |
| US7551023B2 | 1.026 | Amplifier with low pass filter feedback | GRANT | 2009-06-23 | 2004-10-27 | 36315721 | Good | National Semiconductor Germany AG | National Semiconductor Germany AG |
| EP1396079A1 | 1.026 | MULTI-LEVEL POWER AMPLIFIER | GRANT | 2004-03-10 | 2001-06-13 | 25375960 | Good | Conexant Systems LLC | Skyworks Solutions Inc, Conexant Systems LLC |
| WO2006057077A1 | 1.026 | SEMICONDUCTOR DEVICE AND POWER AMPLIFIER | APPLICATION | 2006-06-01 | 2004-11-29 | 36497824 | Good | ||
| EP1047188B1 | 1.025 | Offset voltage cancellation system for radio frequency power controllers | GRANT | 2008-12-31 | 1999-04-23 | 23150103 | Good | Linear Technology LLC | Linear Technology LLC |
| EP1547394A2 | 1.025 | PACKAGED RF POWER TRANSISTOR HAVING RF BYPASSING/OUTPUT MATCHING NETWORK | GRANT | 2005-06-29 | 2002-09-30 | 32030167 | Good | Cree Microwave LLC | Cree Inc |
| EP0547199B1 | 1.024 | HIGH SPEED DIFFERENTIAL COMPARATOR | GRANT | 1999-07-07 | 1991-06-24 | 24892561 | Good | Harris Corp | Harris Corp |
| EP1130771A1 | 1.023 | Amplifier circuit for a physical random number generator and a random number generator using the same | GRANT | 2001-09-05 | 2000-02-29 | 18575842 | Good | Fuji Photo Film Co Ltd | Fujifilm Holdings Corp, Fujifilm Corp |
| US4447790A | 1.023 | Distortion eliminating circuit | GRANT | 1984-05-08 | 1980-10-17 | 26476665 | Good | Nippon Columbia Co Ltd | Nippon Columbia Co Ltd |
| EP1614218B1 | 1.023 | LINEAR AMPLIFIER | GRANT | 2006-07-26 | 2003-04-04 | 33104170 | Good | Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| EP0590976A1 | 1.022 | Radio frequency switching circuit for a video cassette recorder (VCR) | GRANT | 1994-04-06 | 1992-09-30 | 19340421 | Good | Samsung Electro Mechanics Co Ltd | Samsung Electro Mechanics Co Ltd |
| EP0297848A2 | 1.021 | Temperature stabilized RF detector | GRANT | 1989-01-04 | 1987-07-02 | 15829613 | Good | NEC Corp | NEC Corp |
| EP0507311A2 | 1.021 | High frequency amplifying apparatus | GRANT | 1992-10-07 | 1991-04-04 | 13463203 | Good | Panasonic Corp | Panasonic Corp |
| EP0107250A1 | 1.020 | Operational amplifier | GRANT | 1984-05-02 | 1982-10-19 | 19840432 | Good | Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| US4833400A | 1.020 | High frequency multi-range attenuator having a high input impedance | GRANT | 1989-05-23 | 1986-03-14 | 9333138 | Good | US Philips Corp | US Philips Corp |
| EP0908006A1 | 1.019 | BIAS CIRCUIT FOR A POWER AMPLIFIER | GRANT | 1999-04-14 | 1996-06-28 | 24699688 | Good | Motorola Inc | Motorola Solutions Inc |
| WO1993024993A1 | 1.018 | INSTRUMENTATION AMPLIFIER | APPLICATION | 1993-12-09 | 1992-06-03 | 19860874 | Good | ||
| EP1459439A1 | 1.018 | AMPLIFIER WITH BIAS COMPENSATION USING A CURRENT MIRROR CIRCUIT | GRANT | 2004-09-22 | 2001-12-07 | 21796610 | Good | Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| EP0942526B1 | 1.018 | Circuit arrangement for adjusting the impedance of a differential active component | GRANT | 2005-12-14 | 1998-03-11 | 8551219 | Good | Nokia Oyj | Nokia Oyj |
| EP0975089A2 | 1.018 | Parallel HV mosfet high power stable amplifier | GRANT | 2000-01-26 | 1998-07-22 | 22394794 | Good | Eni Technology Inc | Eni Technology Inc |
| EP0457515A1 | 1.018 | Capacitive position detector | GRANT | 1991-11-21 | 1990-05-11 | 24080099 | Good | New SD Inc | New SD Inc |
| US6882226B2 | 1.017 | Broadband variable gain amplifier with high linearity and variable gain characteristic | GRANT | 2005-04-19 | 2002-05-16 | 29422508 | Good | Integrant Technologies Inc | Integrant Technologies Inc |
| EP1679791B1 | 1.017 | Systems methods and devices for differential active biasing of a multi-stage amplifier | GRANT | 2018-11-07 | 2005-01-07 | 35643112 | Good | Viasat Inc | Viasat Inc |
| EP0521404A1 | 1.017 | Capacitive circuit | GRANT | 1993-01-07 | 1991-06-28 | 27461434 | Good | Sanyo Electric Co Ltd | Sanyo Electric Co Ltd |
| EP0252102B1 | 1.017 | A METHOD AND A CIRCUIT FOR DECODING FOUR-CHANNEL SIGNALS WHICH ARE CODED IN A MATRIX AND AVAILABLE IN THE FORM OF A TWO-CHANNEL SIGNAL | GRANT | 1992-03-18 | 1985-12-06 | 8144388 | Good | ||
| US6893101B2 | 1.014 | Active element bias circuit for RF power transistor input | GRANT | 2005-05-17 | 2001-07-27 | 25438983 | Good | Telefonaktiebolaget LM Ericsson AB | Telefonaktiebolaget LM Ericsson AB |
| EP0078084B1 | 1.014 | CIRCUIT ARRANGEMENT WITH A SWITCHABLE SMOOTHING ELEMENT | GRANT | 1988-09-21 | 1981-10-28 | 6144946 | Good | Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Philips Intellectual Property and Standards GmbH, Koninklijke Philips NV |
| EP0768753A1 | 1.014 | TUNED AMPLIFIER | GRANT | 1997-04-16 | 1994-06-13 | 26481822 | Good | ||
| EP1509998A2 | 1.013 | APPARATUS FOR DETECTING THE ENVELOPE OF RF POWER SIGNALS | GRANT | 2005-03-02 | 2002-06-03 | 28053335 | Good | Paragon Communications Ltd | Paragon Communications Ltd |
| US7395035B2 | 1.013 | Up-conversion mixing system with high carrier suppression | GRANT | 2008-07-01 | 2005-04-28 | 37463362 | Good | Sunplus Technology Co Ltd | Sunplus Technology Co Ltd |
| EP1111774A1 | 1.012 | Method and apparatus for biasing radio frequency power transistors | GRANT | 2001-06-27 | 1999-12-22 | 23862960 | Good | Nortel Networks Ltd | Nortel Networks Ltd |
| EP0995264A1 | 1.012 | IMPEDANCE MATCHING CIRCUIT FOR POWER AMPLIFIER | GRANT | 2000-04-26 | 1997-07-03 | 25392652 | Good | Ericsson Inc | Ericsson Inc |
| US5898899A | 1.011 | RF broadband amplifier bypass method and apparatus | GRANT | 1999-04-27 | 1996-11-25 | 25050826 | Good | Thomas and Betts International LLC | ACI HOLDINGS LLC |
| US6118338A | 1.011 | Low noise amplifier circuit with an isolating switch topology | GRANT | 2000-09-12 | 1999-11-23 | 23777055 | Good | Agilent Technologies Inc | Avago Technologies International Sales Pte Ltd |
| US5828264A | 1.011 | Two-stage operational amplifier circuit with wide output voltage swings | GRANT | 1998-10-27 | 1994-12-08 | 10765720 | Good | Motorola Inc | NXP USA Inc, Xerox Corp |
| EP0199219A2 | 1.010 | Narrow band electroencephalographic amplifier | GRANT | 1986-10-29 | 1985-04-25 | 24921154 | Good | Westinghouse Electric Corp | CBS Corp |
| US5489873A | 1.010 | Active low-pass filter | GRANT | 1996-02-06 | 1994-03-03 | 12398698 | Good | Motorola Inc | Motorola Solutions Inc |
| US4479093A | 1.010 | Amplifier having high common mode rejection | GRANT | 1984-10-23 | 1981-12-03 | 23275037 | Good | INVENTAB AUDIO KB | INVENTAB AUDIO KB A CORP OF SWEDEN, INVENTAB AUDIO KB |
| EP0195403A2 | 1.010 | Apparatus for the gated modulation of a radio-frequency carrier signal | GRANT | 1986-09-24 | 1985-03-21 | 24869913 | Good | General Electric Co | General Electric Co |
| EP0521653A2 | 1.009 | Gain control amplifier | GRANT | 1993-01-07 | 1991-07-01 | 24909590 | Good | Raytheon Co | Raytheon Co |
| US6052029A | 1.009 | Stabilizing circuit and amplifier | GRANT | 2000-04-18 | 1997-06-25 | 15882511 | Good | Sanyo Electric Co Ltd | Sanyo Electric Co Ltd |
| WO1997033336A1 | 1.009 | APPARATUS AND METHOD FOR TRANSMITTING ELECTRICAL POWER AND BROADBAND RF COMMUNICATIONS SIGNALS THROUGH A DIELECTRIC | APPLICATION | 1997-09-12 | 1996-03-04 | 24444595 | Good | ||
| EP0851580A1 | 1.008 | Tuner for cable modem | GRANT | 1998-07-01 | 1996-12-26 | 27291692 | Good | Sharp Corp | Sharp Corp |
| EP0370725B1 | 1.008 | Amplifier circuit using feedback load | GRANT | 1996-10-30 | 1988-11-21 | 17802039 | Good | Nippon Telegraph and Telephone Corp | Nippon Telegraph and Telephone Corp |
| EP0226255A2 | 1.007 | Modulator | GRANT | 1987-06-24 | 1985-12-19 | 6288904 | Good | Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Philips Intellectual Property and Standards GmbH, Koninklijke Philips NV |
| US5140279A | 1.007 | Slew rate enhanced linear amplifier | GRANT | 1992-08-18 | 1990-12-03 | 24490293 | Good | Crystal Semiconductor Corp | Cirrus Logic Inc |
| US6954106B2 | 1.007 | FET band amplifier | GRANT | 2005-10-11 | 2001-02-22 | 18908778 | Good | Nigata Semitsu Co Ltd | Ricoh Co Ltd |
| WO2004023648A2 | 1.006 | AMPLIFIER POWER CONTROL CIRCUIT | APPLICATION | 2004-03-18 | 2002-09-03 | 29584108 | Good | ||
| EP0444644A2 | 1.006 | Transmission input/output device with reduced power consumption | GRANT | 1991-09-04 | 1990-03-02 | 12833989 | Good | Toshiba Corp | Toshiba Corp |
| US4132958A | 1.005 | FEEDBESIDE CORRECTION CIRCUIT FOR AN AMPLIFIER | GRANT | 1979-01-02 | 1977-10-31 | 25298821 | Good | Tektronix Inc | Micron Technology Inc |
| US6707337B2 | 1.004 | Self-operating PWM amplifier | GRANT | 2004-03-16 | 2001-09-27 | 19119190 | Good | Yamaha Corp | Yamaha Corp |
| US7036378B2 | 1.004 | High and low frequency band dual output transducer | GRANT | 2006-05-02 | 2000-08-09 | 22838357 | Good | Endevco Corp | Endevco Corp |
| US5399986A | 1.004 | Isolated multi-output power amplifier | GRANT | 1995-03-21 | 1993-12-20 | 22619807 | Good | ||
| EP0840950A1 | 1.004 | FIELD EFFECT TRANSISTOR CABLE TELEVISION LINE AMPLIFIER | GRANT | 1998-05-13 | 1995-07-27 | 21696667 | Good | Scientific Atlanta LLC | Scientific Atlanta LLC |
| US5541554A | 1.002 | Multi-mode power amplifier | GRANT | 1996-07-30 | 1995-03-06 | 23577791 | Good | Motorola Inc | Motorola Solutions Inc |
| EP1026822A2 | 1.002 | A method and an arrangement for compensating the temperature drift of a detector and a control signal in periodic control | GRANT | 2000-08-09 | 1999-02-03 | 8553592 | Good | Nokia Mobile Phones Ltd, Nokia Oyj | Nokia Mobile Phones Ltd, Nokia Oyj |
| EP0755115A1 | 1.001 | Active low pass filter | GRANT | 1997-01-22 | 1995-07-20 | 16523302 | Good | Motorola Inc | Motorola Solutions Inc |
| EP0781000A2 | 1.000 | Broadband amplifier and transceiver for a broadband communication system | GRANT | 1997-06-25 | 1995-12-20 | 7780671 | Good | Alcatel SA | Alcatel SA |
| US7667916B1 | 1.000 | Signal conversion system and method | GRANT | 2010-02-23 | 2004-04-26 | 41692202 | Good | Marvell International Ltd | Marvell Asia Pte Ltd |
| EP1532732A2 | 1.000 | SYSTEM AND METHOD FOR ESTABLISHING THE INPUT IMPEDANCE OF AN AMPLIFIER IN A STACKED CONFIGURATION | GRANT | 2005-05-25 | 2002-08-30 | 31976981 | Good | Microtune Texas LP | Microtune Inc |
| EP0541933A1 | 0.998 | Distortion correction for an amplifier system | GRANT | 1993-05-19 | 1991-10-15 | 25108493 | Good | Harris Corp | Harris Corp |
| EP0203475A2 | 0.998 | Integrated circuit RF amplifier module | GRANT | 1986-12-03 | 1985-05-21 | 25671034 | Good | Ericsson Inc, General Electric Co | Ericsson Inc |
| WO2003107547A1 | 0.998 | LOW FREQUENCY ATTENUATING CIRCUIT | APPLICATION | 2003-12-24 | 2002-06-18 | 29728147 | Good | ||
| EP1341299A1 | 0.998 | Power detection in an amplification device | GRANT | 2003-09-03 | 2002-02-27 | 27675647 | Good | TDK Corp | TDK Corp |
| EP0653119A1 | 0.997 | METHODS AND APPARATUS FOR MICROPHONE PREAMPLIFICATION | GRANT | 1995-05-17 | 1993-06-03 | 22101809 | Good | Apple Computer Inc | Apple Inc |
| US6191656B1 | 0.997 | High efficiency unilateral dual stage RF amplifier | GRANT | 2001-02-20 | 1999-07-23 | 23417058 | Good | RF Micro Devices Inc | Qorvo US Inc |
| US4393353A | 0.997 | Negative feedback amplifying circuit having voltage negative feedback and current negative feedback circuits | GRANT | 1983-07-12 | 1979-09-28 | 15126153 | Good | Victor Company of Japan Ltd | Victor Company of Japan Ltd |
| WO2004027982A2 | 0.996 | LINEAR POWER AMPLIFIER WITH MULTIPLE OUTPUT POWER LEVELS | APPLICATION | 2004-04-01 | 2002-09-20 | 32034221 | Good | ||
| EP0665646B1 | 0.996 | Filter circuit | GRANT | 1999-03-31 | 1994-01-26 | 11652740 | Good | Sanyo Electric Co Ltd | Sanyo Electric Co Ltd |
| EP0120756A1 | 0.996 | Oscillator comprising high-frequency bandpass amplifier having an adaptable impedance | GRANT | 1984-10-03 | 1983-03-18 | 9287015 | Good | Compagnie Electronique et de Piezoelectricite CEPE | Compagnie Electronique et de Piezoelectricite CEPE |
| EP0062700A1 | 0.995 | Integrable semiconductor circuit including a negative feedback non-inverting operational amplifier | GRANT | 1982-10-20 | 1981-04-07 | 6129583 | Good | Siemens AG | Siemens AG |
| EP0853838A1 | 0.995 | INDUCTORLESS VOLTAGE BIASING CIRCUIT FOR AN AC-COUPLED AMPLIFIER | GRANT | 1998-07-22 | 1996-07-30 | 24764520 | Good | Koninklijke Philips Electronics NV, Philips Electronics NV | Koninklijke Philips NV |
| WO2004021561A1 | 0.995 | AMPLIFICATION CIRCUIT | APPLICATION | 2004-03-11 | 2002-08-27 | 31972437 | Good | ||
| WO1998044628A1 | 0.994 | CIRCUITRY AND METHOD FOR POWER CALIBRATION | APPLICATION | 1998-10-08 | 1997-03-31 | 25253841 | Good | ||
| EP0467270B1 | 0.993 | High efficiency RF power amplifier | GRANT | 1995-03-29 | 1990-07-16 | 16206049 | Good | Fujitsu Ltd, Fujitsu Quantum Devices Ltd | Fujitsu Ltd, Fujitsu Quantum Devices Ltd |
| EP0270192A2 | 0.992 | Filter | GRANT | 1988-06-08 | 1986-12-05 | 10608510 | Good | Philips Electronic and Associated Industries Ltd, Philips Electronics UK Ltd, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Philips Electronics UK Ltd, Koninklijke Philips NV |
| US3723894A | 0.990 | AUTOMATIC GAIN CONTROL CIRCUIT | GRANT | 1973-03-27 | 1971-08-13 | 22623875 | Good | GTE Sylvania Inc | GTE Sylvania Inc |
| EP0486332A1 | 0.990 | Operational amplifier | GRANT | 1992-05-20 | 1990-10-05 | 9400988 | Good | Texas Instruments France SAS, Texas Instruments Inc | Texas Instruments France SAS, Texas Instruments Inc |
| WO1999062170A1 | 0.990 | DOUBLE BALANCE DIFFERENTIAL ACTIVE RING MIXER WITH CURRENT SHARED ACTIVE INPUT BALUN | APPLICATION | 1999-12-02 | 1998-05-29 | 22204437 | Good | ||
| EP0901715B1 | 0.989 | AMPLIFIER ARRANGEMENT | GRANT | 2006-01-04 | 1997-02-27 | 26146182 | Good | Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| EP0248789A1 | 0.988 | HIGH-FIDELITY AUDIO FREQUENCY AMPLIFIER. | GRANT | 1987-12-16 | 1985-10-28 | 22188911 | Good | ||
| EP0265044A1 | 0.988 | Level shift circuit for differential signals | GRANT | 1988-04-27 | 1986-09-19 | 25427612 | Good | Tektronix Inc | Tektronix Inc |
| US7816990B2 | 0.988 | Variable gain amplification circuit | GRANT | 2010-10-19 | 2003-03-17 | 33288719 | Good | Panasonic Corp | Nuvoton Technology Corp Japan |
| US3895309A | 0.988 | Sub networks for filter ladder networks | GRANT | 1975-07-15 | 1973-01-17 | 9740343 | Good | Post Office | Post Office |
| WO2002015397A2 | 0.988 | LOW-LOSS BYPASS MODE OF AN AMPLIFIER WITH HIGH LINEARITY AND MATCHED IMPEDANCE | APPLICATION | 2002-02-21 | 2000-08-16 | 24570388 | Good | ||
| US5451904A | 0.987 | Amplifying circuit in which variable impedance circuit is used in negative feedback circuit | GRANT | 1995-09-19 | 1993-03-26 | 26371158 | Good | Mitsumi Electric Co Ltd | Mitsumi Electric Co Ltd |
| EP1875605A1 | 0.987 | DIFFERENTIAL INDUCTOR BASED LOW NOISE AMPLIFIER | GRANT | 2008-01-09 | 2005-04-26 | 36683421 | Good | Intel Corp | Intel Corp |
| EP0234435A2 | 0.986 | Low-frequency power amplifier in particular of the integrated type | GRANT | 1987-09-02 | 1986-02-19 | 11158137 | Good | SGS Microelettronica SpA, SGS Thomson Microelectronics SRL | STMicroelectronics SRL |
| EP0638995B1 | 0.985 | A DC coupled amplifier fed by an RF detector | GRANT | 1999-01-07 | 1993-08-09 | 22297296 | Good | AT&T Corp | AT&T Corp |
| US5325440A | 0.984 | Loudness control circuit | GRANT | 1994-06-28 | 1990-08-30 | 16907876 | Good | Sanyo Electric Co Ltd | Semiconductor Components Industries LLC |
| EP1522142B1 | 0.984 | AMPLIFYING CIRCUIT WITH ADJUSTABLE AMPLIFICATION AND TRANSMITTER SYSTEM COMPRISING SUCH AN AMPLIFYING CIRCUIT | GRANT | 2007-11-28 | 2002-07-10 | 29796248 | Good | Infineon Technologies AG | Infineon Technologies AG |
| EP0521652A2 | 0.983 | Frequency multiplier | GRANT | 1993-01-07 | 1991-07-01 | 27110949 | Good | Raytheon Co | Raytheon Co |
| EP0362219A1 | 0.983 | ASYMMETRICAL DUAL INPUT AMPLIFIER. | GRANT | 1990-04-11 | 1987-04-10 | 21889420 | Good | ||
| US6430403B1 | 0.983 | Temperature compensated zero bias RF detector circuit | GRANT | 2002-08-06 | 1999-06-10 | 23284862 | Good | Nokia of America Corp | Nokia of America Corp, WSOU Investments LLC |
| US6049703A | 0.983 | Amplifier circuit and method for increasing linearity of the amplifier circuit | GRANT | 2000-04-11 | 1997-11-28 | 25527419 | Good | Motorola Inc | Apple Inc |
| EP0208474A2 | 0.982 | Automotive sound system | GRANT | 1987-01-14 | 1985-07-05 | 25024670 | Good | Harman International Industries Inc | Harman International Industries Inc |
| EP1169775B1 | 0.982 | PREDISTORTION GENERATOR COUPLED WITH AN RF AMPLIFIER | GRANT | 2004-03-31 | 1999-04-09 | 23109168 | Good | Arris Technology Inc, General Instrument Corp | Arris Technology Inc |
| US6122532A | 0.982 | RF amplifier with reduced power consumption | GRANT | 2000-09-19 | 1998-11-18 | 22726167 | Good | Triquint Semiconductor Inc | Qorvo US Inc |
| EP0863608A1 | 0.982 | Switchable high frequency amplifier | GRANT | 1998-09-09 | 1997-03-05 | 7822227 | Good | Robert Bosch GmbH | Robert Bosch GmbH |
| EP0176069A1 | 0.982 | High-pass filter with amplifier | GRANT | 1986-04-02 | 1984-09-24 | 6246210 | Good | Siemens AG | Siemens AG |
| US5315266A | 0.981 | Amplifier having improved capacitive drive capability | GRANT | 1994-05-24 | 1992-06-19 | 25414354 | Good | National Semiconductor Corp | National Semiconductor Corp |
| US5264805A | 0.981 | Amplifier for limiter | GRANT | 1993-11-23 | 1991-08-13 | 16844148 | Good | Panasonic Corp | Panasonic Corp |
| EP0847621A1 | 0.981 | HIGHLY RESPONSIVE AUTOMATIC OUTPUT POWER CONTROL BASED ON A DIFFERENTIAL AMPLIFIER | GRANT | 1998-06-17 | 1995-08-30 | 21703306 | Good | Matsushita Communication Industrial Corp | Matsushita Communication Industrial Corp |
| US6556078B2 | 0.980 | Integrated low-corner frequency high pass filter circuit | GRANT | 2003-04-29 | 2001-04-30 | 25295687 | Good | EM Microelectronics US Inc | EM US Design Inc, EM Microelectronics US Inc |
| EP1376862B1 | 0.980 | Asymmetric voltage optimized wideband common-gate bi-directional mmic amplifier | GRANT | 2008-01-02 | 2002-05-30 | 29549269 | Good | Northrop Grumman Corp | Northrop Grumman Corp |
| US6714082B2 | 0.979 | Semiconductor amplifier circuit | GRANT | 2004-03-30 | 2001-06-28 | 19034671 | Good | Fujitsu Quantum Devices Ltd | Fujitsu Quantum Devices Ltd |
| EP0234627A1 | 0.978 | Bridge amplifier | GRANT | 1987-09-02 | 1986-02-07 | 19847537 | Good | Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| EP1471649A1 | 0.977 | Antenna amplifier and shared antenna amplifier | GRANT | 2004-10-27 | 2003-04-25 | 33553798 | Good | Denso Ten Ltd | Denso Ten Ltd |
| US7053716B2 | 0.977 | Controlled impedance bias circuit | GRANT | 2006-05-30 | 2004-05-14 | 35308861 | Good | Intel Corp | Intel Corp |
| EP1437023A1 | 0.976 | AMPLIFIER POWER DETECTION CIRCUITRY | GRANT | 2004-07-14 | 2001-09-14 | 25492989 | Good | RF Micro Devices Inc | RF Micro Devices Inc |
| EP0788680A1 | 0.976 | CIRCUIT ARRANGEMENT PROVIDED WITH A VOLTAGE - CURRENT CONVERTER | GRANT | 1997-08-13 | 1995-08-29 | 8220591 | Good | Koninklijke Philips Electronics NV, Philips Electronics NV | Koninklijke Philips NV |
| US6034568A | 0.976 | Broadband dc amplifier technique with very low offset voltage | GRANT | 2000-03-07 | 1998-06-15 | 22263612 | Good | International Business Machines Corp | International Business Machines Corp |
| US4435683A | 0.975 | RF Imbalance detector | GRANT | 1984-03-06 | 1981-04-09 | 22956370 | Good | Rockwell International Corp | Boeing North American Inc |
| EP0886384B1 | 0.975 | Single-stage dual-band low-noise amplifier for use in a wireless communication system receiver | GRANT | 2007-02-21 | 1997-06-13 | 25364803 | Good | Nokia of America Corp | Nokia of America Corp |
| US4303889A | 0.975 | Filter circuit | GRANT | 1981-12-01 | 1978-12-29 | 16065354 | Good | Nippon Gakki Co Ltd | Nippon Gakki Co Ltd |
| US4622692A | 0.975 | Noise reduction system | GRANT | 1986-11-11 | 1983-10-12 | 4126258 | Good | Gennum Corp, LINEAR TECHNOLOGY Inc | LINEAR TECHNOLOGY Inc |
| US6819166B1 | 0.974 | Continuous-time low-frequency-gain/high-frequency-boosting joint adaptation equalizer and method | GRANT | 2004-11-16 | 2003-01-03 | 33422784 | Good | Silicon Image Inc | Lattice Semiconductor Corp |
| EP1169776B1 | 0.973 | BIASING ARRANGEMENT FOR FIELD EFFECT TRANSISTORS | GRANT | 2007-10-10 | 1999-04-13 | 20415186 | Good | Telefonaktiebolaget LM Ericsson AB | Telefonaktiebolaget LM Ericsson AB |
| US4468626A | 0.972 | Polyphase PDM amplifier | GRANT | 1984-08-28 | 1982-01-25 | 23341565 | Good | Harris Corp | Harris Corp |
| WO1994013042A1 | 0.972 | BROADBAND MATCHING NETWORK | APPLICATION | 1994-06-09 | 1992-12-01 | 25530081 | Good | ||
| EP0271953A2 | 0.971 | Gain-controlled amplifier | GRANT | 1988-06-22 | 1986-12-13 | 6316115 | Good | Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Philips Intellectual Property and Standards GmbH, Koninklijke Philips NV |
| EP1247337A1 | 0.970 | POWER AMPLIFIER CORE | GRANT | 2002-10-09 | 1999-12-10 | 23820169 | Good | Motorola Inc | Motorola Solutions Inc |
| EP0750807A1 | 0.969 | AMPLIFIER | GRANT | 1997-01-02 | 1995-01-17 | 7751668 | Good | LDT GmbH and Co Laser Display Technologie KG | LDT Laser Display Technology GmbH |
| WO1991012671A1 | 0.968 | RADIO-FREQUENCY POWER AMPLIFIER WITH VARIABLE IMPEDANCE AND VARIABLE OUTPUT POWER | APPLICATION | 1991-08-22 | 1990-02-06 | 23887880 | Good | ||
| WO2006004154A1 | 0.967 | AMPLIFYING APPARATUS | APPLICATION | 2006-01-12 | 2004-07-06 | 35782954 | Good | ||
| US6262628B1 | 0.966 | Differential amplifier circuit | GRANT | 2001-07-17 | 1999-06-23 | 16019218 | Good | Mitsubishi Electric Corp | Renesas Electronics Corp |
| WO2001048913A1 | 0.966 | WIDE BAND AMPLIFIER CIRCUIT AND SIGNAL DISCRIMINATING CIRCUIT USING IT | APPLICATION | 2001-07-05 | 1999-12-27 | 14237725 | Good | ||
| EP1802164A1 | 0.965 | SIGNAL AMPLIFYING CIRCUIT AND ACCELERATION SENSOR HAVING THE SAME | GRANT | 2007-06-27 | 2004-09-24 | 36090032 | Good | Hosiden Corp | Hosiden Corp |
| EP0821479A2 | 0.965 | Filter circuit and audio signal processor comprising the same | GRANT | 1998-01-28 | 1996-07-26 | 7801064 | Good | SGS Thomson Microelectronics GmbH | STMicroelectronics GmbH |
| EP0584732B1 | 0.964 | Double tuned circuit with balanced output and image trap | GRANT | 1997-07-30 | 1992-08-28 | 25471064 | Good | Thomson Consumer Electronics Inc | Technicolor USA Inc |
| US5434535A | 0.962 | RC filter for low and very low frequency applications | GRANT | 1995-07-18 | 1992-07-29 | 8212149 | Good | SGS Thomson Microelectronics SRL | STMicroelectronics SRL |
| EP0905925A2 | 0.962 | Light receiving amplifying device | GRANT | 1999-03-31 | 1997-09-26 | 17363053 | Good | Sharp Corp | Sharp Corp |
| EP0851578A2 | 0.962 | Filter circuit | GRANT | 1998-07-01 | 1996-12-16 | 18290821 | Good | Toshiba Corp | Toshiba Corp |
| EP1449307B1 | 0.960 | IMPEDANCE MATCHING CIRCUIT FOR A MULTI-BAND RADIO FREQUENCY DEVICE | GRANT | 2011-02-09 | 2001-11-14 | 21708614 | Good | NXP BV | NXP BV |
| EP0678978A2 | 0.960 | Circuit with adjustable frequency response | GRANT | 1995-10-25 | 1994-04-21 | 6516082 | Good | Philips Corporate Intellectual Property GmbH, Philips Patentverwaltung GmbH, Koninklijke Philips Electronics NV, Philips Electronics NV | Philips Intellectual Property and Standards GmbH, Koninklijke Philips NV |
| EP0893878B1 | 0.960 | High frequency oscillating circuit | GRANT | 2006-05-10 | 1997-07-25 | 27311824 | Good | Panasonic Corp | Panasonic Corp |
| EP1010243B1 | 0.960 | A DUAL-BAND DUAL-MODE POWER AMPLIFIER | GRANT | 2003-03-12 | 1997-09-29 | 25473868 | Good | Ericsson Inc | Ericsson Inc |
| EP1011194A2 | 0.960 | High speed differential optoelectronic receiver | GRANT | 2000-06-21 | 1998-12-07 | 22768498 | Good | TRW Inc | Northrop Grumman Corp |
| EP0332613A1 | 0.960 | PULSE SHAPER FOR INDUCTIVE TRANSMITTER. | GRANT | 1989-09-20 | 1986-11-22 | 6314554 | Good | Robert Bosch GmbH | Robert Bosch GmbH |
| US5339048A | 0.958 | Radio frequency amplifier | GRANT | 1994-08-16 | 1993-05-03 | 21997971 | Good | Motorola Inc | Motorola Solutions Inc |
| EP1289137A1 | 0.957 | Integrated RC Filter | GRANT | 2003-03-05 | 2001-08-06 | 8180766 | Good | Semiconductor Ideas to the Market (ItoM) BV | Semiconductor Ideas to the Market (ItoM) BV |
| EP0347141A2 | 0.957 | Improved RF power-control circuit | GRANT | 1989-12-20 | 1988-06-17 | 22774517 | Good | Novatel Inc | Novatel Inc |
| WO1995002277A1 | 0.956 | STABLE NARROW BANDWIDTH HIGH FREQUENCY AMPLIFIER WITH LOW POWER CONSUMPTION | APPLICATION | 1995-01-19 | 1993-07-07 | 22209580 | Good | ||
| EP0902535A2 | 0.956 | Low-pass filter with a summing function | GRANT | 1999-03-17 | 1997-09-09 | 17114275 | Good | NEC Corp | NEC Electronics Corp |
| US4081845A | 0.956 | Magnetic recording with bias and data mixing circuit | GRANT | 1978-03-28 | 1976-06-29 | 24815044 | Good | Honeywell Inc | Northrop Grumman Innovation Systems LLC |
| EP1749342B1 | 0.954 | QUADRATURE OFFSET POWER AMPLIFIER | GRANT | 2011-03-30 | 2004-05-26 | 34971543 | Good | Raytheon Co | Raytheon Co |
| EP0442492A2 | 0.954 | Active filter | GRANT | 1991-08-21 | 1990-02-14 | 12366102 | Good | Toshiba Corp | Toshiba Corp |
| EP0472406A1 | 0.954 | High speed low power DC offsetting circuit | GRANT | 1992-02-26 | 1990-08-21 | 24280333 | Good | BP Corp North America Inc | BP Corp North America Inc |
| EP0533757B1 | 0.952 | SURROUND PROCESSOR | GRANT | 1998-09-09 | 1990-06-08 | 56289237 | Good | Harman International Industries Inc | Harman International Industries Inc |
| EP0043699B1 | 0.951 | OPERATIONAL AMPLIFIER | GRANT | 1983-12-07 | 1980-07-04 | 14024482 | Good | Fujitsu Ltd | Fujitsu Ltd |
| EP0847144A2 | 0.950 | Receiver with low stand by current | GRANT | 1998-06-10 | 1996-12-03 | 7813497 | Good | Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV | Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV |
| US5142164A | 0.950 | Subharomic noise reduction circuit | GRANT | 1992-08-25 | 1990-03-26 | 23985875 | Good | Illinois Inst of Technology | Illinois Inst of Technology |
| EP1537651B1 | 0.949 | SYSTEM AND METHOD FOR ESTABLISHING A BIAS CURRENT USING A FEEDBACK LOOP | GRANT | 2018-08-22 | 2002-08-30 | 31976984 | Good | CSR Technology Inc | CSR Technology Inc |
| EP1177620A1 | 0.949 | COMPENSATION MECHANISM FOR COMPENSATING BIAS LEVELS OF AN OPERATION CIRCUIT IN RESPONSE TO SUPPLY VOLTAGE CHANGES | GRANT | 2002-02-06 | 1999-05-13 | 23206010 | Good | Honeywell Inc | Honeywell Inc |
| US5371803A | 0.949 | Tone reduction circuit for headsets | GRANT | 1994-12-06 | 1990-08-31 | 46246600 | Good | BellSouth LLC | Hunter Douglas Inc, Xylon LLC |
| EP1573813A2 | 0.949 | RF POWER TRANSISTOR WITH INTERNAL BIAS FEED | GRANT | 2005-09-14 | 2002-12-19 | 32229987 | Good | Infineon Technologies AG | Infineon Technologies AG |
| EP2273677A2 | 0.948 | Wide bandwidth attenuator input circuit for a measurement probe | GRANT | 2011-01-12 | 2004-06-01 | 35809984 | Good | Tektronix Inc | Tektronix Inc |
| EP0345880A1 | 0.948 | Balanced integrator-filter arrangement | GRANT | 1989-12-13 | 1988-06-08 | 19852429 | Good | Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| EP1418668A1 | 0.947 | High isolation/high speed buffer amplifier | GRANT | 2004-05-12 | 2002-11-07 | 32104028 | Good | Dialog Semiconductor GmbH | Dialog Semiconductor GmbH |
| EP1448963A2 | 0.947 | AN INFRARED DETECTING CIRCUIT AND AN INFRARED DETECTOR | GRANT | 2004-08-25 | 2001-11-27 | 19172269 | Good | Panasonic Electric Works Co Ltd | Panasonic Corp |
| EP1723718B1 | 0.946 | EER MODULATOR WITH POWER AMPLIFIER HAVING FEEDBACK LOOP PROVIDING SOFT OUTPUT IMPEDANCE | GRANT | 2011-08-10 | 2003-12-08 | 34634392 | Good | Northrop Grumman Systems Corp | Northrop Grumman Systems Corp |
| EP0473120A2 | 0.945 | Double super-heterodyne tuner | GRANT | 1992-03-04 | 1990-08-30 | 16906641 | Good | Panasonic Corp | Panasonic Corp |
| EP1254507B1 | 0.945 | CIRCUIT FOR REDUCING SECOND AND THIRD ORDER INTERMODULATION DISTORTION FOR A BROADBAND RF AMPLIFIER | GRANT | 2003-11-12 | 2000-01-24 | 27049769 | Good | Arris Technology Inc, General Instrument Corp | Arris Technology Inc |
| EP0440916A1 | 0.943 | Circuitry for the processing of signals from a vehicle wheel speed sensor | GRANT | 1991-08-14 | 1990-01-29 | 6398988 | Good | Knorr Bremse AG | Knorr Bremse AG |
| US4302732A | 0.942 | Harmonic phase locked loop with undesired DC component suppression | GRANT | 1981-11-24 | 1979-07-09 | 22000805 | Good | Sperry Corp | Sperry Corp |
| EP0431201A1 | 0.942 | LINEAR TRANSMITTER | GRANT | 1991-06-12 | 1989-06-30 | 27520071 | Good | Nippon Telegraph and Telephone Corp, NTT Mobile Communications Networks Inc | NTT Docomo Inc, Nippon Telegraph and Telephone Corp |
| US5491839A | 0.941 | System for short range transmission of a plurality of signals simultaneously over the air using high frequency carriers | GRANT | 1996-02-13 | 1991-08-21 | 22093453 | Good | LS Research LLC | Ls Research Inc, LS Research LLC |
| US6466084B1 | 0.941 | Circuit for reducing third order intermodulation distortion for a broadband RF amplifier | GRANT | 2002-10-15 | 2000-01-24 | 23944605 | Good | General Instrument Corp | Arris Enterprises LLC |
| EP1683267A1 | 0.939 | MICROPHONE PREAMPLIFIER | GRANT | 2006-07-26 | 2003-10-14 | 34467966 | Good | Audioasics AS | Audioasics AS |
| US6583661B1 | 0.938 | Compensation mechanism for compensating bias levels of an operation circuit in response to supply voltage changes | GRANT | 2003-06-24 | 2000-11-03 | 24835872 | Good | Honeywell Inc | Honeywell Inc, Honeywell International Inc |
| US3838346A | 0.937 | BIPOLAR SAMPLE AND HOLD CIRCUIT WITH LOW-PASS FILTERING | GRANT | 1974-09-24 | 1973-11-01 | 23629702 | Good | Bell Telephone Laboratories Inc | AT&T Corp |
| US5049837A | 0.937 | Push-pull transformer coupled RF amplifier with response to DC | GRANT | 1991-09-17 | 1990-06-25 | 24164349 | Good | Tektronix Inc | Tektronix Inc |
| EP0202618B1 | 0.937 | Optoelectrical transimpedance receiver | GRANT | 1993-12-08 | 1985-05-18 | 6271060 | Good | Siemens AG | Siemens AG |
| US5424675A | 0.936 | Full differential type analog circuit having parallel oppositely connected capacitors to eliminate unbalanced parasitic capacitances | GRANT | 1995-06-13 | 1992-05-29 | 15778108 | Good | NEC Corp | Renesas Electronics Corp |
| US5378947A | 0.936 | Filter circuit composed of glass delay line with no coil | GRANT | 1995-01-03 | 1992-04-03 | 14541831 | Good | NEC Corp | NEC Electronics Corp |
| US6060949A | 0.934 | High efficiency switched gain power amplifier | GRANT | 2000-05-09 | 1998-09-22 | 22568216 | Good | Qualcomm Inc | Qualcomm Inc |
| US6342815B1 | 0.933 | Manufacturable HBT power distributed amplifier for wideband telecommunications | GRANT | 2002-01-29 | 2000-10-04 | 24721541 | Good | TRW Inc | Northrop Grumman Systems Corp |
| US5365189A | 0.933 | Drift free low noise composite amplifier and method of operation thereof | GRANT | 1994-11-15 | 1993-03-17 | 21865198 | Good | University of Alberta | University of Alberta |
| WO2005060114A1 | 0.932 | ACTIVATION SIGNAL OUTPUT CIRCUIT | APPLICATION | 2005-06-30 | 2003-12-17 | 34697158 | Good | ||
| US5347389A | 0.931 | Push-pull optical receiver with cascode amplifiers | GRANT | 1994-09-13 | 1993-05-27 | 22082130 | Good | Scientific Atlanta LLC | Cisco Technology Inc |
| EP0096719B1 | 0.931 | NON-LINEAR AMPLIFIER SYSTEMS | GRANT | 1987-02-04 | 1981-12-28 | 16681542 | Good | Tektronix Inc | Tektronix Inc |
| US7253680B2 | 0.930 | Amplifier system with current-mode servo feedback | GRANT | 2007-08-07 | 2003-05-21 | 36578474 | Good | World Energy Labs 2 Inc | Biourja Energy Systems LLC |
| US5276912A | 0.930 | Radio frequency power amplifier having variable output power | GRANT | 1994-01-04 | 1990-02-06 | 27365919 | Good | Motorola Inc | Motorola Solutions Inc |
| EP1517437A1 | 0.930 | RF power amplifier with operating current measuring circuitry | GRANT | 2005-03-23 | 2003-09-19 | 34178448 | Good | Siemens AG | Siemens AG |
| EP0502056A1 | 0.929 | DIFFERENCE AMPLIFIER APPARATUS EMPLOYING AN INPUT ATTENUATOR NETWORK. | GRANT | 1992-09-09 | 1989-11-20 | 23744761 | Good | Analog Devices Inc | Analog Devices Inc |
| US4760348A | 0.928 | Broadband in-line amplifier for submarine antennas | GRANT | 1988-07-26 | 1987-04-02 | 21869496 | Good | US Department of Navy | US Department of Navy |
| EP1175001A2 | 0.928 | Oscillator with constant output level over oscillation frequency range | GRANT | 2002-01-23 | 2000-07-11 | 18711188 | Good | Alps Electric Co Ltd | Alps Alpine Co Ltd |
| EP1776756A1 | 0.926 | RF POWER SENSING CIRCUIT | GRANT | 2007-04-25 | 2004-08-06 | 35306467 | Good | Koninklijke Philips Electronics NV | Koninklijke Philips NV, NXP BV |
| US7310505B2 | 0.925 | Attenuation control for tuners | GRANT | 2007-12-18 | 2003-09-09 | 34226784 | Good | Zenith Electronics LLC | Zenith Electronics LLC |
| WO1996002974A1 | 0.925 | AN IMPROVEMENT IN AMPLIFIERS | APPLICATION | 1996-02-01 | 1994-07-13 | 25644709 | Good | ||
| EP1188234A1 | 0.924 | CIRCUIT ARRAY FOR ADAPTING AN AMPLIFIER TO A HIGH FREQUENCY LINE AND UTILIZATION OF SAID CIRCUIT ARRAY | GRANT | 2002-03-20 | 1999-06-24 | 7912379 | Good | Infineon Technologies AG | Infineon Technologies AG |
| WO2006020521A2 | 0.923 | QUIESCENT CURRENT CONTROL CIRCUIT FOR POWER AMPLIFIERS | APPLICATION | 2006-02-23 | 2004-08-10 | 35908055 | Good | ||
| EP0148249A1 | 0.923 | CIRCUIT WITH ADJUSTABLE AMPLITUDE AND ROLLOFF FREQUENCY CHARACTERISTICS | GRANT | 1985-07-17 | 1983-07-05 | 24032870 | Good | Rosemount Inc | Rosemount Inc |
| US4520507A | 0.923 | Low noise CATV converter | GRANT | 1985-05-28 | 1983-10-24 | 24174242 | Good | Zenith Electronics LLC | Zenith Electronics LLC |
| US4284965A | 0.923 | Tone control device | GRANT | 1981-08-18 | 1978-09-11 | 27311774 | Good | Pioneer Electronic Corp | Pioneer Corp |
| EP0568939B1 | 0.922 | FSK receiver | GRANT | 2001-09-26 | 1992-05-06 | 15280682 | Good | NEC Corp | NEC Corp |
| EP0604535A1 | 0.920 | HIGH FREQUENCY PRODUCING DEVICE AND OSCILLATOR COMPRISING DIFFERENTIAL AMPLIFIERS | GRANT | 1994-07-06 | 1991-09-10 | 20383673 | Good | Telefonaktiebolaget LM Ericsson AB | Telefonaktiebolaget LM Ericsson AB |
| EP0821483A2 | 0.913 | SC-filter with intrinsic anti-aliasing function and audio signal processor provided with the same | GRANT | 1998-01-28 | 1996-07-26 | 7801069 | Good | SGS Thomson Microelectronics GmbH | STMicroelectronics GmbH |
| US5594387A | 0.912 | Amplifier circuit having nagative feedback loop for self-bias | GRANT | 1997-01-14 | 1994-06-29 | 15871126 | Good | NEC Corp | NEC Electronics Corp |
| US4558289A | 0.911 | Bias and AGC control of two RF amplifiers with a shared control element | GRANT | 1985-12-10 | 1983-12-23 | 24256414 | Good | RCA Corp | RCA Licensing Corp |
| EP1166436B1 | 0.909 | NON-LINEAR DISTORTION GENERATOR | GRANT | 2002-10-09 | 1999-04-01 | 26860146 | Good | Arris Technology Inc, General Instrument Corp | Arris Technology Inc |
| US4511853A | 0.908 | Differential amplifier circuit having improved control signal filtering | GRANT | 1985-04-16 | 1982-04-10 | 6160776 | Good | US Philips Corp | US Philips Corp |
| US5184090A | 0.908 | HEAD AMPLIFIER | GRANT | 1993-02-02 | 1990-01-29 | 11977047 | Good | Sanyo Electric Co Ltd | Sanyo Electric Co Ltd |
| US4924194A | 0.908 | RF power amplifier | GRANT | 1990-05-08 | 1989-05-19 | 23396616 | Good | Motorola Inc | Motorola Solutions Inc |
| EP1500187B1 | 0.905 | A DIFFERENTIAL AMPLIFIER | GRANT | 2010-11-24 | 2002-04-08 | 28685938 | Good | ST Ericsson SA | ST Ericsson SA, NXP BV |
| EP0445879A1 | 0.904 | Broadband signal amplifier | GRANT | 1991-09-11 | 1990-03-07 | 19856705 | Good | Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| US4405901A | 0.903 | Signal processing circuit | GRANT | 1983-09-20 | 1981-02-23 | 22892383 | Good | Tokyo Shibaura Electric Co Ltd | Toshiba Corp |
| US7362171B2 | 0.902 | High-frequency amplifier | GRANT | 2008-04-22 | 2003-11-13 | 34593945 | Good | NEC Corp | NEC Corp |
| EP0600043A1 | 0.898 | SYSTEM FOR SHORT-RANGE TRANSMISSION OF SIGNALS OVER THE AIR USING A HIGH FREQUENCY CARRIER | GRANT | 1994-06-08 | 1991-08-21 | 25008723 | Good | LS Research LLC | Ls Research Inc, LS Research LLC, Ls Research Inc |
| EP1455445B1 | 0.897 | DIGITAL AMPLIFICATION DEVICE | GRANT | 2005-11-16 | 2002-08-22 | 31943992 | Good | Panasonic Corp | Panasonic Corp |
| US5541502A | 0.895 | Level measuring set for low-frequency signals | GRANT | 1996-07-30 | 1992-08-17 | 6465713 | Good | Siemens AG | Tektronix Inc |
| US6639461B1 | 0.893 | Ultra-wideband power amplifier module apparatus and method for optical and electronic communications | GRANT | 2003-10-28 | 2001-08-30 | 25479905 | Good | Sierra Monolithics Inc | Sierra Monolithics Inc |
| EP1308026A2 | 0.892 | DRIVER CIRCUIT FOR SUBSCRIBER TERMINALS | GRANT | 2003-05-07 | 2000-08-07 | 7651514 | Good | Infineon Technologies AG | Infineon Technologies AG |
| US4759065A | 0.891 | Automotive sound system | GRANT | 1988-07-19 | 1986-09-22 | 25427581 | Good | Harman International Industries Inc | Harman International Industries Inc |
| EP0399561A2 | 0.890 | VHF DC-DC power supply | GRANT | 1990-11-28 | 1989-05-25 | 23405427 | Good | Hughes Aircraft Co | Raytheon Co |
| EP0269428B1 | 0.889 | Fet tuner | GRANT | 1996-06-12 | 1986-11-26 | 25467134 | Good | RCA Licensing Corp | RCA Licensing Corp |
| WO2005011108A2 | 0.888 | LOW-POWER HIGH-PSRR CURRENT-MODE MICROPHONE PRE-AMPLIFIER SYSTEM AND METHOD | APPLICATION | 2005-02-03 | 2003-07-17 | 34107760 | Good | ||
| US3786363A | 0.888 | VOLTAGE-CONTROLLED LOW-PASS FILTER | GRANT | 1974-01-15 | 1973-01-05 | 23249556 | Good | US Department of Navy | US Department of Navy |
| EP0954093A1 | 0.884 | Suppression of local oscillator second order harmonics | GRANT | 1999-11-03 | 1998-04-29 | 22091835 | Good | Mitel Networks Inc | Mitel Networks Inc |
| EP0322157A1 | 0.882 | Active low-pass filter for use with high frequency signal source apparatus | GRANT | 1989-06-28 | 1987-12-18 | 22466631 | Good | Rockwell International Corp | Boeing North American Inc |
| US5898911A | 0.880 | Current-stacked DX switch with high rf isolation | GRANT | 1999-04-27 | 1997-03-19 | 25231254 | Good | Hughes Electronics Corp | DirecTV Group Inc |
| EP1346467A2 | 0.878 | INTEGRATED DIRECT CONVERSION SATELLITE TUNER | GRANT | 2003-09-24 | 2000-11-29 | 22948472 | Good | Broadcom Corp | Broadcom Corp |
| US7346327B2 | 0.878 | Wireless receiving circuit and wireless portable device | GRANT | 2008-03-18 | 2004-02-23 | 34858150 | Good | Sharp Corp | Sharp Corp |
| EP0484064A2 | 0.876 | Broadband optical receiver | GRANT | 1992-05-06 | 1990-11-01 | 24434969 | Good | American Telephone and Telegraph Co Inc, AT&T Corp | AT&T Corp |
| US7148748B2 | 0.875 | Active protection circuit for load mismatched power amplifier | GRANT | 2006-12-12 | 2002-08-09 | 32680540 | Good | Triquint Semiconductor Inc | Qorvo US Inc |
| EP0744828A2 | 0.872 | Transimpedance amplifier circuit | GRANT | 1996-11-27 | 1995-05-22 | 7762555 | Good | Siemens AG | Infineon Technologies AG |
| EP0474294A1 | 0.867 | Polarization-independent receiver | GRANT | 1992-03-11 | 1990-09-04 | 19857621 | Good | Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| US20040198271A1 | 0.866 | Envelope-tracking amplifier for improving gain Method for improving efficiency thereof and terminal device of mobile communication applied to the same | APPLICATION | 2004-10-07 | 2000-02-15 | 33493959 | Good | ||
| EP1553695B1 | 0.865 | START SIGNAL OUTPUT CIRCUIT | GRANT | 2009-04-15 | 2002-09-25 | 32044609 | Good | Denso Corp | Denso Corp |
| US6344773B1 | 0.865 | Flexible monolithic continuous-time analog low-pass filter with minimal circuitry | GRANT | 2002-02-05 | 2000-10-20 | 24783132 | Good | Linear Technology LLC | Analog Devices International UC |
| EP0971492B1 | 0.864 | Receiver for an optical HF-signal transmission link | GRANT | 2005-09-14 | 1998-07-10 | 26047322 | Good | EADS Deutschland GmbH | Airbus Defence and Space GmbH |
| EP0779707B1 | 0.858 | RF filter arrangement with image trap | GRANT | 2002-07-24 | 1995-12-14 | 24288334 | Good | Thomson Consumer Electronics Inc | Technicolor USA Inc |
| EP0250453B1 | 0.855 | CASCADED INTERNAL IMPEDANCE DEPENDENT AMPLIFIER WITH ACCURATE VARIABLE GAIN CONTROL | GRANT | 1991-11-27 | 1985-12-16 | 25201824 | Good | Hughes Aircraft Co | Raytheon Co |
| WO1998054893A2 | 0.853 | VIDEO SIGNAL EQUALIZATION SYSTEM | APPLICATION | 1998-12-03 | 1997-05-30 | 25348647 | Good | ||
| EP0429914A2 | 0.852 | Tuning circuit | GRANT | 1991-06-05 | 1989-12-01 | 6394581 | Good | Telefunken Electronic GmbH, Temic Telefunken Microelectronic GmbH | Telefunken Electronic GmbH, Conti Temic Microelectronic GmbH |
| US6069526A | 0.849 | Partial or complete amplifier bypass | GRANT | 2000-05-30 | 1998-08-04 | 22438101 | Good | Qualcomm Inc | Qualcomm Inc |
| US4074204A | 0.843 | EQUALIZING AMPLIFIER | GRANT | 1978-02-14 | 1976-11-22 | 24990938 | Good | VAN ALSTINE AUDIO SYSTEMS Inc | VAN ALSTINE AUDIO SYSTEMS Inc |
| US6091296A | 0.817 | Single loop feedforward amplifier for use in an RF transmitter and method of operation | GRANT | 2000-07-18 | 1998-08-14 | 22462181 | Good | Samsung Electronics Co Ltd | Samsung Electronics Co Ltd |
| US7230476B1 | 0.810 | Bipolar high impedance element | GRANT | 2007-06-12 | 2005-01-18 | 38120520 | Good | Inphi Corp | Cavium International, Marvell Asia Pte Ltd |
| EP0768755A1 | 0.806 | Active low-pass filter circuit | GRANT | 1997-04-16 | 1995-10-10 | 24160739 | Good | SGS Thomson Microelectronics Inc | STMicroelectronics lnc USA |
| EP0014350B1 | 0.801 | MONOLITHICALLY INTEGRATED SEMICONDUCTOR CIRCUIT | GRANT | 1983-05-18 | 1979-02-05 | 6062210 | Good | Siemens AG | Siemens AG |
| EP0264161B1 | 0.780 | ACTIVE FILTER WITH BOOTSTRAPPING | GRANT | 1992-11-25 | 1986-10-10 | 25439074 | Good | Tektronix Inc | Tektronix Inc |
| US7218175B1 | 0.774 | Dynamic feedback linearization | GRANT | 2007-05-15 | 2005-04-11 | 38015752 | Good | Sirenza Microdevices Inc | Qorvo US Inc |
| US5530923A | 0.760 | Dual mode transmission system with switched linear amplifier | GRANT | 1996-06-25 | 1994-03-30 | 22820722 | Good | Nokia Mobile Phones Ltd | Nokia Mobile Phones Ltd |
| US5909643A | 0.747 | Transmitter power varying device having a bypass line for a power amplifier | GRANT | 1999-06-01 | 1995-11-24 | 17953694 | Good | Panasonic Corp | Collabo Innovations Inc |
| US5877653A | 0.742 | Linear power amplifier and method for removing intermodulation distortion with predistortion system and feed forward system | GRANT | 1999-03-02 | 1995-11-16 | 26631399 | Good | Samsung Electronics Co Ltd | Samsung Electronics Co Ltd |
| US6130589A | 0.736 | Matching circuit and a method for matching a transistor circuit | GRANT | 2000-10-10 | 1997-06-04 | 15413523 | Good | NEC Corp | NEC Corp |
| US6356150B1 | 0.735 | Portable integrated switching power amplifier | GRANT | 2002-03-12 | 2000-01-21 | 23941032 | Good | RF Micro Devices Inc | Qorvo US Inc |
| EP0086026A2 | 0.730 | Integrated notch filter | GRANT | 1983-08-17 | 1982-02-10 | 23364661 | Good | Motorola Inc | Motorola Solutions Inc |
| US7049886B2 | 0.721 | High efficiency power amplifier with multiple power modes | GRANT | 2006-05-23 | 2003-01-03 | 32677839 | Good | Avago Technologies General IP Singapore Pte Ltd | Avago Technologies International Sales Pte Ltd |
| US4393275A | 0.712 | Hearing aid with controllable wide range of frequency response | GRANT | 1983-07-12 | 1981-09-30 | 23187847 | Good | Beltone Electronics Corp | Beltone Electronics Corp |
| US6075412A | 0.708 | Linearization for power amplifiers | GRANT | 2000-06-13 | 1998-10-13 | 22622064 | Good | Ophir RF Inc | Ophir RF Inc |
| US5758269A | 0.676 | High-efficient configurable power amplifier for use in a portable unit | GRANT | 1998-05-26 | 1995-03-30 | 23638136 | Good | Nokia of America Corp | AT&T Corp, Nokia of America Corp |
| US6374116B1 | 0.675 | Adjusting maximum transmit power to maintain constant margin for adjacent channel power rejection | GRANT | 2002-04-16 | 1999-06-14 | 26837469 | Good | Qualcomm Inc | Qualcomm Inc |
| US5175871A | 0.661 | Power amplifier for a cellular telephone | GRANT | 1992-12-29 | 1991-08-08 | 24984627 | Good | Ericsson Inc | Ericsson Inc |
| US4068186A | 0.639 | Circuit for compensating for nonlinear characteristics in high-frequency amplifiers | GRANT | 1978-01-10 | 1975-06-24 | 13644833 | Good | Kokusai Denshin Denwa KK | Kokusai Denshin Denwa KK |
| US5152004A | 0.633 | PROCEDURE FOR FORMING LOW POWER LEVELS IN A RADIO TELEPHONE TRANSMITTER | GRANT | 1992-09-29 | 1989-05-12 | 8528419 | Good | Nokia Mobile Phones Ltd | Nokia Mobile Phones Ltd |
| US4859881A | 0.631 | Filter circuit | GRANT | 1989-08-22 | 1986-12-29 | 26334219 | Good | Sony Corp | Sony Corp |
| US4320534A | 0.609 | Loudness control circuit | GRANT | 1982-03-16 | 1979-10-25 | 26471257 | Good | Toko Inc | Toko Inc |
| US4888789A | 0.607 | Adjustable equalizer for compensating for high frequency rolloff and typical AM receivers | GRANT | 1989-12-19 | 1982-03-30 | 27002138 | Good | Orban Associates Inc, AKG Acoustics Inc, SIMMONS HEALTHCARE Inc | DELANTONI JOHN H, SIMMONS HEALTHCARE Inc, CRL Systems Inc |
| US4293814A | 0.587 | Crankshaft position sensor circuitry for providing stable cyclical output signals without regard to peak to peak variations in sensor signals | GRANT | 1981-10-06 | 1979-08-08 | 22057721 | Good | Ford Motor Co | Ford Motor Co |
| US4186274A | 0.560 | Sound system control | GRANT | 1980-01-29 | 1978-06-22 | 25439449 | Good | Bose Corp | Bose Corp |
| US4916407A | 0.556 | Gain variation compensating circuit for a feedforward linear amplifier | GRANT | 1990-04-10 | 1988-12-29 | 23120974 | Good | Westinghouse Electric Corp | Northrop Grumman Corp |
| US4703261A | 0.538 | Differential Hall-effect gear measure feeler | GRANT | 1987-10-27 | 1983-12-15 | 4313433 | Good | Maag Gear Wheel and Machine Co Ltd | Maag Gear Wheel and Machine Co Ltd |
| US6487419B1 | 0.503 | Systems and methods for management of current consumption and performance in a receiver down converter of a wireless device | GRANT | 2002-11-26 | 1998-08-06 | 22441923 | Good | Ericsson Inc | Ericsson Inc |
| US4716306A | 0.499 | Circuit for detecting variation of resistance of a variable-resistance element | GRANT | 1987-12-29 | 1983-08-15 | 26478420 | Good | Hitachi Ltd | Hitachi Ltd |
| US5032800A | 0.497 | Tunable oscillator with noise degeneration | GRANT | 1991-07-16 | 1990-06-15 | 24146942 | Good | Raytheon Co | Raytheon Co |
| US5252934A | 0.452 | Microwave delay assembly | GRANT | 1993-10-12 | 1992-08-25 | 25467237 | Good | AT&T Bell Laboratories Inc | Nokia Bell Labs, AT&T Corp |
| US3665345A | 0.440 | COMPRESSORS AND EXPANDERS FOR NOISE REDUCTION SYSTEMS | GRANT | 1972-05-23 | 1969-07-21 | 10388414 | Good | Dolby Laboratories Inc | Dolby Laboratories Inc |
| US3921104A | 0.389 | Adjustable equalizers useable in audio spectrum | GRANT | 1975-11-18 | 1973-11-19 | 10468083 | Good | Dolby Laboratories Inc | Dolby Laboratories Inc |
| US6600388B2 | 0.365 | Electronic variable delay line filters using two in-line varactor-controlled four-input couplers allowing variable delay | GRANT | 2003-07-29 | 2001-03-30 | 26809514 | Good | Delaware Capital Formation Inc | Delaware Capital Formation Inc |
| US4491808A | 0.363 | Equalizer circuit for use in communication unit | GRANT | 1985-01-01 | 1981-11-05 | 27324601 | Good | Mitsubishi Electric Corp | Mitsubishi Electric Corp |
| US6205318B1 | 0.320 | Power management controller for computer system | GRANT | 2001-03-20 | 1997-04-07 | 25268858 | Good | Gateway Inc | Gateway Inc |
| US3942118A | 0.281 | Delay time controller for use in a group-delay equalizer | GRANT | 1976-03-02 | 1973-10-01 | 14545376 | Good | Nippon Electric Co Ltd | NEC Corp |
| US6751323B2 | 0.199 | Electroacoustic apparatus having ringing signal generation means capable of producing a subjective bass perception | GRANT | 2004-06-15 | 2000-12-13 | 8175991 | Good | Koninklijke Philips Electronics NV | Koninklijke Philips NV |
| US3699480A | 0.183 | VARIABLE RF GROUP DELAY EQUALIZER | GRANT | 1972-10-17 | 1969-12-15 | 25385856 | Good | MA Com Inc | MA Com Inc |
| US3622898A | NR | CIRCUIT FOR PROCESSING HALL GENERATOR OUTPUT SIGNALS | GRANT | 1971-11-23 | 1970-05-20 | 21903001 | Good | CONTELESIS CORP | CONTELESIS CORP |
| US3600698A | NR | AMPLIFIER PROVIDED WITH AUTOMATIC LEVEL CONTROL | GRANT | 1971-08-17 | 1969-01-23 | 19805944 | Good | US Philips Corp | US Philips Corp |
| US3551706A | NR | HALL EFFECT DEVICE CONFIGURATIONS FOR EXTENDED FREQUENCY RANGE | GRANT | 1970-12-29 | 1968-10-15 | 25080054 | Good | F W BELL Inc | F W BELL Inc |
| US3525041A | NR | MAGNETIC FIELD MEASURING METHOD AND DEVICE EFFECTIVE OVER A WIDE FREQUENCY RANGE | GRANT | 1970-08-18 | 1966-08-08 | 24281145 | Good | Tektronix Inc | Tektronix Inc |
| US3493869A | NR | TRANSISTOR MIXING CIRCUIT HAVING A CONVERSION GAIN CONTROLLED BY FORWARD CONTROL OF THE MIXER TRANSISTOR | GRANT | 1970-02-03 | 1963-10-25 | 27351075 | Good | US Philips Corp | US Philips Corp |
| US3378781A | NR | Control apparatus | GRANT | 1968-04-16 | 1965-01-04 | 23677826 | Good | Honeywell Inc | Honeywell Inc |
| KR20040017167A | NR | RF LINEAR POWER AMPLIFIER | APPLICATION | 2004-02-26 | 2002-08-20 | 37322884 | Good | ||
| KR20010105151A | NR | HIGH EFFICIENCY AMPLIFIER WITH AMPLIFIER ELEMENT RADIO TRANSMISSION DEVICE THEREWITH AND MEASURING DEVICE THEREFOR | APPLICATION | 2001-11-28 | 2000-05-16 | 18650260 | Good | ||
| KR100217416B1 | NR | LINEAR AMPLIFIER AND METHOD THEREOF | GRANT | 1999-09-01 | 1995-11-16 | 19480758 | Good | ||
| FR2583935A1 | NR | No title | GRANT | 1986-12-26 | 1985-06-20 | 25002673 | Good | Burr Brown Corp | Texas Instruments Tucson Corp |
| DE2749784A1 | NR | No title | GRANT | 1978-09-21 | 1977-03-18 | 27459179 | Good | Tokyo Shibaura Electric Co Ltd | Toshiba Corp |
| US3946691A | 0.617 | AUTOPILOT EMPLOYING IMPROVED HALL-EFFECT DIRECTION SENSOR | GRANT | 1976-03-30 | 1973-10-17 | 27019777 | Fair | METAL MARINE PILOT Inc | METAL MARINE PILOT Inc |
| US6335665B1 | 0.592 | Adjustable phase and delay shift element | GRANT | 2002-01-01 | 1999-09-28 | 23609892 | Fair | Nokia of America Corp | Nokia of America Corp |
| US4825157A | 0.566 | Hall-effect controller | GRANT | 1989-04-25 | 1988-05-16 | 22716454 | Fair | Es Beta Inc | Es Beta Inc |
| US4645949A | 0.538 | Circuit arrangement for enhancing the utilizable hall-signal of hall sensor | GRANT | 1987-02-24 | 1980-07-10 | 6106904 | Fair | Siemens AG | Siemens AG |
| US4200814A | 0.537 | Multiplier with hall element | GRANT | 1980-04-29 | 1976-11-05 | 27552797 | Fair | Tokyo Shibaura Electric Co Ltd | Toshiba Corp |
| US5241270A | 0.510 | Electronic compass using hall-effect sensors | GRANT | 1993-08-31 | 1990-04-02 | 27054364 | Fair | ||
| US3906641A | 0.445 | Autopilot employing improved hall-effect direction sensor | GRANT | 1975-09-23 | 1971-09-27 | 22674304 | Fair | METAL MARINE PILOT Inc | METAL MARINE PILOT Inc |
| US5119050A | 0.390 | LOW LOSS 360 DEGREE X-BAND ANALOG PHASE SHIFTER | GRANT | 1992-06-02 | 1990-04-26 | 24048771 | Fair | Comsat Corp | Comsat Corp |
| WO1991015778A1 | 0.373 | A SOLID STATE COMPASS | APPLICATION | 1991-10-17 | 1990-04-02 | 24000491 | Fair | ||
| US4371905A | 0.371 | High resolution hall effect read head | GRANT | 1983-02-01 | 1980-11-13 | 22766497 | Fair | Computer and Communications Technology Corp | Western Digital Technologies Inc, Sunward Technologies Inc |
| US5877626A | 0.355 | Temperature resistant magnetoresistance sensing device | GRANT | 1999-03-02 | 1996-05-30 | 15183772 | Fair | Mitsubishi Electric Corp | Mitsubishi Electric Corp |
| US4988962A | 0.307 | Circuit for correcting group delay at microwave frequencies | GRANT | 1991-01-29 | 1988-10-27 | 9371316 | Fair | Alcatel Transmission Par Faisceaux Hertziens SA | Alcatel Transmission Par Faisceaux Hertziens SA |
| US4859972A | 0.302 | Continuous phase shifter for a phased array hyperthermia system | GRANT | 1989-08-22 | 1988-11-01 | 23010701 | Fair | University of Illinois | University of Illinois |
| US20030130751A1 | 0.287 | New filter bank for graphics equalizer implementation | APPLICATION | 2003-07-10 | 2002-01-09 | 21914420 | Fair | FreeSystems Pte Ltd | FreeSystems Pte Ltd |
| US4218664A | 0.249 | Temperature-compensated microwave integrated circuit delay line | GRANT | 1980-08-19 | 1978-08-22 | 25467088 | Fair | Comsat Corp | Comsat Corp |
| US4409568A | 0.249 | Temperature compensated time delay element for a differentially coherent digital receiver | GRANT | 1983-10-11 | 1981-01-09 | 22837431 | Fair | Comsat Corp | Comsat Corp |
| US4197514A | 0.240 | Microwave delay equalizer comprising a pair of distributed-constant_ elements as a directional coupler | GRANT | 1980-04-08 | 1976-09-21 | 14613365 | Fair | Nippon Electric Co Ltd | NEC Corp |
| US4622523A | 0.165 | Group delay equalizers using short circuit triple mode filters | GRANT | 1986-11-11 | 1983-05-30 | 4125357 | Fair | Com Dev Ltd | Com Dev Ltd |
| US3825777A | 0.059 | HALL CELL WITH OFFSET VOLTAGE CONTROL | GRANT | 1974-07-23 | 1973-02-14 | 23298392 | Fair | International Business Machines Corp | International Business Machines Corp |
| US6363685B1 | 0.058 | Method and apparatus for selectively adjusting the elevation of an undulating or plannar surface | GRANT | 2002-04-02 | 2000-05-19 | 24299897 | Fair | United Construction Products LLC | United Construction Products LLC |
| US3277403A | NR | Microwave dual mode resonator apparatus for equalizing and compensating for non-linear phase angle or time delay characteristics of other components | GRANT | 1966-10-04 | 1964-01-16 | 23324094 | Fair | Emerson Electric Co | Emerson Electric Co |
| US3195043A | NR | Hall effect proximity transducer | GRANT | 1965-07-13 | 1961-05-19 | 22337765 | Fair | Westinghouse Electric Corp | CBS Corp |
| DE2931686A1 | NR | No title | GRANT | 1981-02-19 | 1979-08-04 | 6077635 | Fair | Papst Motoren GmbH and Co KG | Ebm Papst St Georgen GmbH and Co KG, Papst Licensing GmbH and Co KG |
 |  |
Validity Report Full Report
US7221220B2 — Method and apparatus for low-frequency bypass in broadband RF circuitry Priority Date: 2005-06-07, Publication Date: 2007-05-22, Current Assignee: Guzik Technical EnterprisesReport Generated: 2022-01-11