| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 08/24/2011 | EP2359472A1 Device and method for processing a signal, and radiofrequency transmission system comprising such a device |
| 08/24/2011 | EP2359471A2 Decomposer and amplifier |
| 08/24/2011 | EP2359470A1 Power supply arrangement for multi-stage amplifier |
| 08/24/2011 | EP1820269B1 Current limiting circuit for rf power amplifier |
| 08/24/2011 | EP1609238B1 Enhanced efficiency feed forward power amplifier utilizing reduced cancellation bandwidth and small error amplifier |
| 08/24/2011 | EP1245077B1 Carrier blanking mechanism for sweeping detector used to measure and correct RF power amplifier distortion |
| 08/24/2011 | CN201947222U 可调增益的射频低噪放大器 RF variable gain low noise amplifier |
| 08/24/2011 | CN201947221U 一种k波段超高增益低噪声放大器 One kind of k-band ultra high gain low noise amplifier |
| 08/24/2011 | CN102165686A Enhanced doherty amplifier with bias supply modulation |
| 08/24/2011 | CN102163956A Signal feedback loop and method for predistorter, power amplification equipment |
| 08/24/2011 | CN102163955A Low-noise amplifier adopting single-ended input and differential output |
| 08/24/2011 | CN101610069B Power amplifier, power amplifying circuit and power amplifying method |
| 08/24/2011 | CN101527543B Audio system capable of suppressing switch noise and audio amplifier |
| 08/24/2011 | CN101478514B Method for implementing digital power pre-distortion |
| 08/24/2011 | CN101471665B D/A converter circuit employing multistage amplifier part multiplexing technology |
| 08/24/2011 | CN101233684B Non-linear distortion detection method and distortion compensation amplifying device |
| 08/24/2011 | CN101026358B Offset elimination amplifier and its control method, and display device using same |
| 08/23/2011 | US8005607 Device and method for controlling ignition timing of internal combustion engine |
| 08/23/2011 | US8005230 Method and system for digitally controlling a multi-channel audio amplifier |
| 08/23/2011 | US8004363 Wideband low-noise amplifier |
| 08/23/2011 | US8004358 Distortion compensation device |
| 08/23/2011 | US8004355 Low dissipation amplifier |
| 08/23/2011 | US8004354 Automatic level control |
| 08/23/2011 | US8004353 Circuit |
| 08/18/2011 | WO2011100539A1 Wide band lna with noise canceling |
| 08/18/2011 | WO2011098861A1 High efficiency, remotely reconfigurable remote radio head unit system and method for wireless communications |
| 08/18/2011 | WO2011098759A1 High power wideband amplifier and method |
| 08/18/2011 | WO2011077247A3 Modulation agnostic digital hybrid mode power amplifier system and method |
| 08/18/2011 | WO2011077246A3 Multi-band wideband power amplifier digital predistortion system |
| 08/18/2011 | DE102004043241B4 Transimpedanzverstärker mit veränderbarer Ausgangsamplitude und weitem Eingangsdynamikbereich Transimpedance amplifier with adjustable output amplitude and wide input dynamic range |
| 08/17/2011 | EP2357726A1 System and method for adapting a loudspeaker signal |
| 08/17/2011 | EP2357725A1 Envelope tracking arrangement for improved backoff operation |
| 08/17/2011 | EP2356741A1 Biased power amplifier |
| 08/17/2011 | EP2356740A1 Method and system for amplifying a signal using a transformer matched transistor |
| 08/17/2011 | EP2148433B1 Wide-range low-noise amplifier |
| 08/17/2011 | CN201937548U Self-adapting distributive optical fiber temperature measuring laser detection amplifier |
| 08/17/2011 | CN201937547U 音频放大器的静态噪声消除电路 Static noise removal circuit of the audio amplifier |
| 08/17/2011 | CN201937546U 用于弱信号的前置放大器 For weak signal preamplifier |
| 08/17/2011 | CN201937545U 双向放大器检测口的防掉螺塞 Bidirectional amplifier to detect anti-out port plug |
| 08/17/2011 | CN201937544U 双向放大器的屏蔽体 Bidirectional amplifier shield |
| 08/17/2011 | CN201937164U 一种双通道激光器调谐控制电路 A dual-channel laser tuning control circuit |
| 08/17/2011 | CN102160282A Voltage clamp |
| 08/17/2011 | CN102160281A Predistortion linearizer with bridge topology having an equalizer stage for each bridge arm |
| 08/17/2011 | CN102160280A Active-time dependent bias current generation for switched-capacitor circuits |
| 08/17/2011 | CN102158181A Low-power consumption bandwidth multiplication chopping stabilized operational amplifier based on MOS (metal oxide semiconductor) device |
| 08/17/2011 | CN102158180A Switch-type operation amplifier with low power consumption |
| 08/17/2011 | CN102158179A Multimode low-noise amplifier adopting positive and negative feedback structure |
| 08/17/2011 | CN102158178A Complementary metal oxide semiconductor (CMOS) physiological signal amplifier adopting T-type capacitance network feedback structure |
| 08/17/2011 | CN102158177A Doherty power amplifier and power amplifying method |
| 08/17/2011 | CN102158176A Doherty power amplification device and power amplification method |
| 08/17/2011 | CN102158175A Power amplifier tube and power amplifying method |
| 08/17/2011 | CN101542897B High frequency amplifier |
| 08/17/2011 | CN101505139B Digital linear pre-distortion method and system |
| 08/17/2011 | CN101107797B Method and system for determining the amplitude and/or phase of the output signal for a transmission body depending on the amplitude of the input signal |
| 08/16/2011 | USRE42612 Switched-mode power amplifier using lumped element impedance inverter for parallel combining |
| 08/16/2011 | US8000939 Charged particle beam apparatus |
| 08/16/2011 | US8000817 Frequency control in closed loop control systems |
| 08/16/2011 | US7999780 Drive circuit containing amplifier circuit |
| 08/16/2011 | US7999614 Power amplifying device with linear corrector |
| 08/16/2011 | US7999611 Differential amplifying device |
| 08/11/2011 | WO2011097387A1 Radio-frequency (rf) amplifier circuits and related techniques |
| 08/11/2011 | WO2011097114A1 Tunable impedance inverter for doherty amplifier circuit |
| 08/11/2011 | WO2011096868A1 Method and arrangement for driving a microphone |
| 08/11/2011 | US20110194004 Image sensor system and amplifying/digitizing circuit thereof |
| 08/11/2011 | US20110193636 Linearization circuits and methods for power amplification |
| 08/11/2011 | US20110193635 Wide band lna with noise canceling |
| 08/11/2011 | CA2788409A1 Method and arrangement for driving a microphone |
| 08/10/2011 | EP2355338A1 Tracking power supply, method for controlling power supply, and communication apparatus |
| 08/10/2011 | EP2355337A1 Fast tracking power supply device, fast tracking power supply control method, and communication equipment |
| 08/10/2011 | EP2355336A1 Distortion Compensating Apparatus, Transmitting Apparatus, and Distortion Compensating Method |
| 08/10/2011 | EP2355002A1 Adder, and power combiner, quadrature modulator, quadrature demodulator, power amplifier, transmitter and wireless communicator using same |
| 08/10/2011 | EP2353220A1 Active-time dependent bias current generation for switched-capacitor circuits |
| 08/10/2011 | EP2353219A1 An asymmetric multilevel outphasing architecture for rf amplifiers |
| 08/10/2011 | EP2353181A1 Common centroid electrostatic discharge protection for integrated circuit devices |
| 08/10/2011 | EP2030317B1 High efficiency linear power amplifiers with load compensation |
| 08/10/2011 | EP1895654B1 High frequency power amplifier distortion compensation device |
| 08/10/2011 | EP1723718B1 Eer modulator with power amplifier having feedback loop providing soft output impedance |
| 08/10/2011 | EP1514285B1 Electronic device and method of matching the impedance thereof |
| 08/10/2011 | CN201928237U 一种音频功放控制电路 An audio amplifier control circuit |
| 08/10/2011 | CN201927163U 通用机车信号环线发码装置 General Motorcycle signal loop hair code means |
| 08/10/2011 | CN102150362A Adaptive digital predistortion of complex modulated waveform using peak and RMS voltage feedback from the output of a power amplifier |
| 08/10/2011 | CN102150361A Baseband-derived RF digital predistortion |
| 08/10/2011 | CN102148605A Radio frequency amplifier with effective decoupling |
| 08/10/2011 | CN101534093B Final three-route power synthesizing amplifying circuit applied to power amplifier of mobile communication base station system |
| 08/10/2011 | CN101388648B Multi-frequency multi-mode power amplifier and operating method thereof |
| 08/10/2011 | CN101378247B Low conductor amplifier |
| 08/10/2011 | CN101373953B Power amplifier |
| 08/10/2011 | CN101361264B System and method for providing a transmitter for polar modulation and power amplifier linearization |
| 08/10/2011 | CN101360085B Method and system for processing communication signal |
| 08/10/2011 | CN101233681B RF transmitter with compensation of differential path delay |
| 08/10/2011 | CN101102094B Amplifier circuit |
| 08/09/2011 | US7996212 Device, method and computer program for analyzing an audio signal |
| 08/09/2011 | US7995972 Electronic component for communication device and semiconductor device for switching transmission and reception |
| 08/09/2011 | US7995490 System and method for identifying a signature of a device, in a communication circuit, utilizing distortion products |
| 08/09/2011 | US7994856 Predistorter, predistortion method, and predistortion system |
| 08/04/2011 | WO2011094471A1 A linearizer incorporating a phase shifter |
| 08/04/2011 | WO2011094101A1 Instrumentation amplifier calibration method, system and apparatus |
| 08/04/2011 | WO2011093996A2 Cmos power amplifiers having integrated one-time programmable (otp) memories |
| 08/04/2011 | WO2011093547A1 Power amplifier insensitive to load impedance changes |
| 08/04/2011 | US20110190028 Power Amplifier Linearization Feedback Methods and Systems |