| 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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| 03/23/2011 | CN101989837A GaAs HBT high-gain broadband linear transconductance unit circuit |
| 03/23/2011 | CN101989836A Efficient audio amplifier and related method thereof |
| 03/23/2011 | CN101510759B Design method for variable load closed-loop E genus amplifier |
| 03/23/2011 | CN101442293B 2.4GHz low noise amplifier circuit capable of resisting process change |
| 03/22/2011 | US7912561 Temporary expanding integrated monitoring network |
| 03/22/2011 | US7912436 LNA gain adjustment in an RF receiver to compensate for intermodulation interference |
| 03/22/2011 | US7911271 Hybrid broadband power amplifier with capacitor matching network |
| 03/22/2011 | US7911270 Broadband microwave device with switchable gain |
| 03/22/2011 | US7911269 Ultra low noise high linearity LNA for multi-mode transceiver |
| 03/17/2011 | WO2011030794A1 Amplification device and wireless transmission device using the same |
| 03/17/2011 | WO2011029492A1 Amplifier circuit, integrated circuit and radio frequency communication unit |
| 03/17/2011 | US20110064245 Half-bridge three-level pwm amplifier and audio processing apparatus including the same |
| 03/17/2011 | US20110063035 Controlled-gain wideband feedback low noise amplifier |
| 03/17/2011 | US20110063030 Cmos variable gain amplifier |
| 03/17/2011 | US20110063026 Pre-distortion apparatus of power amplifier and method thereof |
| 03/17/2011 | DE102010007451B3 Push-pull amplifier for amplifying input signal to output signal, has two amplifying elements, where each amplifying element has current emitting electrode and current collecting electrode |
| 03/17/2011 | DE102005040110B4 Verfahren und Schaltungsanordnung zur Einstellung einer Übertragungscharakteristik-Steilheit Method and circuit for setting a transmission characteristic slope |
| 03/16/2011 | EP2296270A2 Method for removing pop-up noise in mobile device |
| 03/16/2011 | EP2296268A1 Analog circuit |
| 03/16/2011 | EP2296266A1 Multi-carrier amplifier linearization system and method |
| 03/16/2011 | EP2294689A1 Amplifier with improved linearization |
| 03/16/2011 | EP1911153B1 Rf transmitter with compensation of differential path delay |
| 03/16/2011 | EP1447908B1 Power amplifier |
| 03/16/2011 | CN201766555U Power supply system of integrated audio frequency amplification circuit |
| 03/16/2011 | CN1543059B Enhanced predistortion method and apparatus |
| 03/16/2011 | CN101986558A Dynamic balancing class-A audio power amplifier |
| 03/16/2011 | CN101986557A Method and structure for eliminating offset voltage of operational amplifier by using lining bias effect |
| 03/16/2011 | CN101499778B 放大器电路 The amplifier circuit |
| 03/16/2011 | CN101150329B Radio transceiver bias circuit |
| 03/15/2011 | US7908122 Signal processing device for systems in differential configuration |
| 03/15/2011 | US7907904 Mitigating interference to nearby radio systems based on characterization of adjacent channels |
| 03/15/2011 | US7907678 Power series predistorter and control method thereof |
| 03/15/2011 | US7907015 Circuit for compensation of leakage current-induced offset in a single-ended op-amp |
| 03/15/2011 | US7907010 Digital amplifier |
| 03/15/2011 | US7907008 Dynamic signal contamination suppression |
| 03/15/2011 | US7907007 Commutating auto zero amplifier |
| 03/14/2011 | CA2714786A1 Multi-carrier amplifier linearization system and method |
| 03/10/2011 | WO2011028614A2 System and method for amplifying a signal using multiple amplification stages sharing a common bias current |
| 03/10/2011 | WO2011028077A2 Apparatus and method for envelope tracking power amplifier in wireless communication system |
| 03/10/2011 | WO2011027387A1 Amplifier |
| 03/10/2011 | WO2011026858A1 Impedance matching method for a multi-band antenna, and transmission or reception channel having automatic matching |
| 03/10/2011 | WO2011026293A1 Temperature compensating circuit for power amplifier |
| 03/10/2011 | WO2011026292A1 Method for enhancing efficiency of radio frequency power amplifier and efficiency enhancing circuit thereof |
| 03/10/2011 | WO2011003616A3 Open-loop line driver control method and apparatus |
| 03/10/2011 | US20110057744 Communication Transceiver Having a Three-Line Balun With Power Amplifier Bias |
| 03/10/2011 | DE102009040543A1 Schaltung und Verfahren zum Trimmen einer Offsetdrift Circuit and method for trimming an offset drift |
| 03/10/2011 | DE10021944B4 Geschaltetes nichtdispersives IR-Erfassungssystem Switched non-dispersive infrared detection system |
| 03/09/2011 | EP2293437A2 A method for providing wideband ESD protection and circuits obtained therewith |
| 03/09/2011 | EP2293436A2 Power series digital predistorter and distortion compensation control method therefor |
| 03/09/2011 | EP2293435A1 Power amplifier, base station and method for power amplification of an RF signal in a communication network |
| 03/09/2011 | EP2293434A1 Switched amplifier circuit arrangement and method for switched amplification |
| 03/09/2011 | EP2293433A1 Envelope tracking RF power amplifier unit and method for power amplification of an RF signal |
| 03/09/2011 | EP2291709A1 High sensitivity optical receiver employing a high gain amplifier and an equalizing circuit |
| 03/09/2011 | EP1511180B1 Distortion compensator |
| 03/09/2011 | CN201758391U Power line carrier power amplifying and coupling device |
| 03/09/2011 | CN101984555A Parametric array audio play system |
| 03/09/2011 | CN101420204B 低噪声放大器电路 Low noise amplifier circuit |
| 03/09/2011 | CN101040502B Wideband enhanced digital injection predistortion system and method |
| 03/08/2011 | US7904588 Method and system for creating an overlay structure for management information bases |
| 03/08/2011 | US7904195 Method for prognostic maintenance in semiconductor manufacturing equipments |
| 03/08/2011 | US7904108 Double transformer balun for maximum power amplifier power |
| 03/08/2011 | US7904037 Adaptive radio transceiver with offset PLL with subsampling mixers |
| 03/08/2011 | US7903150 Differential amplifier circuit used in solid-state image pickup apparatus, and arrangement that avoids influence of variations of integrated circuits in manufacture and the like |
| 03/08/2011 | US7902925 Amplifier with active post-distortion linearization |
| 03/08/2011 | US7902922 Feedforward amplifier and control method thereof |
| 03/03/2011 | WO2011025598A1 Linearization circuits and methods for power amplification |
| 03/03/2011 | WO2011024598A1 Electrical power amplifier circuit, and transmission device and communication device using the same |
| 03/03/2011 | WO2011024342A1 Transmitter apparatus |
| 03/03/2011 | WO2011024281A1 Doherty amplifier system and transmitter using same |
| 03/03/2011 | WO2011023614A1 Switched amplifier circuit arrangement and method for switched amplification |
| 03/03/2011 | WO2011023534A1 Dual rf channel linearizer channel amplification device, and telecommunication satellite comprising said device |
| 03/03/2011 | WO2010136862A8 Low noise amplifier and mixer |
| 03/03/2011 | WO2010018528A9 Arrangement for calibrating the quiescent operating point of a push-pull amplifier |
| 03/03/2011 | US20110050350 Amplifier circuit |
| 03/03/2011 | US20110050340 System and method for amplifying a signal using multiple amplification stages sharing a common bias current |
| 03/03/2011 | US20110050339 Power series digital predistorter and distortion compensation control method therefor |
| 03/03/2011 | US20110050338 Modulated Triangular Wave Amplifier |
| 03/03/2011 | DE102010024868A1 Nachlauffilter für Fernsehtuner und Verfahren Tracking filter for TV tuner and procedures |
| 03/03/2011 | DE10158791B4 Hochfrequenzverstärker und Funkübertragungsvorrichtung High-frequency amplifier and radio communication apparatus |
| 03/03/2011 | DE10148584B4 Empfänger und Verfahren zur Unterdrückung von kurzzeitigen Störpulsen mit Bursts Receiver and method for suppressing interference pulses with brief bursts |
| 03/03/2011 | CA2771932A1 Dual rf channel linearizer channel amplification device, and telecommunication satellite comprising said device |
| 03/02/2011 | EP2290811A1 Digital predistorter for variable supply amplifier |
| 03/02/2011 | EP2289166A1 Modulated supply stage with feedback to switched supply |
| 03/02/2011 | EP1755214B1 RF power amplifier for wireless communication apparatus |
| 03/02/2011 | EP1619792B1 Preamplifier |
| 03/01/2011 | US7899196 Digital microphone |
| 03/01/2011 | US7898337 High slew rate amplifier, analog-to-digital converter using same, CMOS imager using the analog-to-digital converter and related methods |
| 03/01/2011 | US7898327 Correcting distortions at output of power amplifier |
| 03/01/2011 | US7898325 Amplifier with bypass switch |
| 03/01/2011 | US7898324 Method and system for glitch suppression in dual-amplifier circuit |
| 03/01/2011 | US7898323 Amplifying circuit with offset compensation |
| 02/24/2011 | WO2011022553A1 Protection circuit for power amplifier |
| 02/24/2011 | WO2011022551A1 Stacked amplifier with diode-based biasing |
| 02/24/2011 | WO2011021995A1 Radio frequency power amplifier with linearizing predistorter |
| 02/24/2011 | WO2011021070A1 Circuit with reference source to control the small signal transconductance of an amplifier transistor |
| 02/24/2011 | US20110043283 Variable frequency class-d amplifier, control method thereof, and ramp generator therefor |
| 02/24/2011 | US20110043279 Electronic volume circuit |
| 02/24/2011 | US20110043267 Calibration of linear time-invariant system's step response |
| 02/24/2011 | DE112009000455T5 Reduzieren der Verzerrung einer aufgebrachten Modulation Reduce the distortion of an applied modulation |
| 02/23/2011 | EP2288021A1 Amplifier and method for amplification of an RF signal |