Validity Report
Basic 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
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Patent Id
Score
Title
Patent Type
Publication Date
Priority Date
Search Efficiency
Original Assignee
Current Assignee
US3914716A●●●●●Tone control circuitGRANT1975-10-211973-10-26GreatSansui Electric Co LtdSansui Electric Co Ltd
US4823094A●●●●●Dual-band high-fidelity amplifierGRANT1989-04-181986-05-02Great
EP0837557A1●●●●●High frequency intensity amplifier circuitry arrangement for indoor cable televisionGRANT1998-04-221996-10-11Great
US6304144B1●●●●●Differential amplification circuitGRANT2001-10-161998-07-10GreatFujitsu LtdFujitsu Ltd
EP1024590A1●●●●●Frequency translation circuitryGRANT2000-08-021999-01-29GreatNokia of America CorpNokia of America Corp
EP1467481A1●●●●●Glitch-free controllable RF power amplifierGRANT2004-10-132003-04-09GreatSony Ericsson Mobile Communications ABSony Corp, Sony Mobile Communications AB
EP1480332A2●●●●●Integratable  voltage-controlled rf power amplifierGRANT2004-11-242003-05-19GreatSamsung Electronics Co LtdSamsung Electronics Co Ltd
US6522195B2●●●●●Low noise amplifier having bypass circuitryGRANT2003-02-182000-12-07GreatMotorola IncNXP USA Inc
EP0080234A1●●●●●Filter circuit incorporating a differential amplifierGRANT1983-06-011981-11-20GreatPhilips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NVKoninklijke Philips NV
US5914640A●●●●●Method and system for matching the input impedance of an RF amplifier an antenna to impedanceGRANT1999-06-221996-02-29GreatTexas Instruments IncTexas Instruments Inc
US4025867A●●●●●Capacitance magnification circuitGRANT1977-05-241976-06-16GreatBell Telephone Laboratories IncAT&T Corp
EP0700597A1●●●●●DIFFERENTIAL AUDIO LINE RECEIVERGRANT1996-03-131993-04-22Great
US6940969B2●●●●●Capacitor cancellation method and apparatusGRANT2005-09-062001-12-13GreatLegerity IncMicrosemi Semiconductor US Inc
EP0845871A2●●●●●Intermediate frequency amplifier circuit for use in receive and transmit modeGRANT1998-06-031996-11-20GreatRockwell Science Center LLC, Skyworks Solutions IncRockwell Science Center LLC, Skyworks Solutions Inc
EP1037053A1●●●●●Amplifier for piezoelectric acceleration sensorGRANT2000-09-201999-03-17GreatMurata Manufacturing Co LtdMurata Manufacturing Co Ltd
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Predictive Analytics

Composite Research Score (1-10)
8
  HARD
Art VolumeMEDIUM
Tech ComplexityINTRICATE
Priority DateMID
Tech DiversityBROAD
Expert Services Estimate$4,350 — $4,800
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Preview CPC Technology Profile

Possible Classes
1,127
Recommended Classes
282
Government Assigned Classes
2
CPC
Title
Score
H03F3/68Combinations of amplifiers  e.g. multi-channel amplifiers for stereophonics | power amplifiers using a combination of several semiconductor amplifiers | (ref: H03F3/211)| | combinations of amplifiers using coupling networks with distributed constants | (ref: H03F3/602)●●●●●
H03H11/46One-port networks●●●●●
H03F3/45991by using balancing means●●●●●
H03F3/347in integrated circuits●●●●●
H03F3/45475using IC blocks as the active amplifying circuit●●●●●
H03F3/20Power amplifiers  e.g. Class B amplifiers  Class C amplifiers | (ref: H03F3/26)|  - | (ref: H03F3/30)|  take precedence●●●●●
H03F1/0266by using a signal derived from the input signal●●●●●
H03F3/00Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements●●●●●
H03G3/3036in high-frequency amplifiers or in frequency-changers | (ref: H03G3/3052)|   | (ref: H03G3/32)|   | (ref: H03G3/34)|  take precedence●●●●●
H03F1/32Modifications of amplifiers to reduce non-linear distortion | by negative feedback | (ref: H03F1/34)●●●●●
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