| 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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| 07/01/2009 | CN100508513C Data converter and data conversion method, and transmitter circuit, communications device and electronic device using the same |
| 07/01/2009 | CN100508374C Current-mode instrumentation amplifier |
| 07/01/2009 | CN100508370C Source follower and its stable current feedback circuit |
| 07/01/2009 | CN100508369C Pre-distortion f non-linear devices by post-detection |
| 07/01/2009 | CN100508368C Noise limiting circuit during power source switching |
| 07/01/2009 | CN100508367C Amplifier with high output power dynamics |
| 07/01/2009 | CN100508189C Circuit and method for amplifying signal |
| 06/30/2009 | US7555059 Low power distributed transmitter |
| 06/30/2009 | US7555057 Predistortion calibration in a transceiver assembly |
| 06/30/2009 | US7554409 Over-current protection circuit and method for protecting switching power amplifier circuits |
| 06/30/2009 | US7554397 Highly linear low-noise amplifiers |
| 06/30/2009 | US7554394 Power amplifier circuit |
| 06/30/2009 | US7554393 Signal amplifier |
| 06/30/2009 | US7554392 Multiple output power mode amplifier |
| 06/30/2009 | US7554389 Differential amplifier and digital-to-analog converter |
| 06/30/2009 | CA2566784C Detection and elimination of oscillation within cellular network amplifiers |
| 06/30/2009 | CA2406754C Method and apparatus for noise reduction, particularly in hearing aids |
| 06/25/2009 | WO2009079491A1 Low noise and low input capacitance differential mds lna |
| 06/25/2009 | WO2009079468A2 Amplifier with dynamic bias |
| 06/25/2009 | WO2009079096A1 High-speed, multi-stage class ab amplifiers |
| 06/25/2009 | WO2009078345A1 Constant voltage circuit |
| 06/25/2009 | WO2009077816A1 Amplifier circuit, electronic device, method for configuring an amplifier circuit |
| 06/25/2009 | US20090163784 Ultra-low-power pulse oximeter implemented with an energy-efficient photoreceptor |
| 06/25/2009 | US20090160554 Amplifier arrangement |
| 06/25/2009 | US20090160550 Predistorter |
| 06/25/2009 | US20090160549 Linearised Power Amplifier |
| 06/25/2009 | US20090160548 Power amplifying apparatus |
| 06/25/2009 | US20090159784 Integrated circuit device and imaging apparatus using integrated circuit device |
| 06/25/2009 | DE102007059350A1 Impedanzabbildende Verstärkerschaltung mit ausschließlich reaktiver Gegenkopplung Impedance Imaging amplifier circuit with only reactive feedback |
| 06/24/2009 | EP2073381A1 Multiport amplifiers in communications satellites |
| 06/24/2009 | EP2073380A2 Controllable supply voltage circuit for power amplifier |
| 06/24/2009 | EP2073379A2 Low-noise block |
| 06/24/2009 | EP1851852A4 Power control circuit for accurate control of power amplifier output power |
| 06/24/2009 | EP1538744B1 Gain-controlled amplifier, receiver circuit and radio communication device |
| 06/24/2009 | CN101467347A Distortion compensator apparatus, amplifier appratus, transmitter, and method of compensating distortion |
| 06/24/2009 | CN101467346A Doherty power amplifier |
| 06/24/2009 | CN101465619A Method and apparatus for restraining D-genus power amplifier noise and D-genus power amplifier with noise suppression |
| 06/24/2009 | CN101465618A Ultra-wideband low-noise amplifier with double input routes |
| 06/24/2009 | CN100505728C Method and apparatus for reduction of distortion in a feedforward amplifier |
| 06/24/2009 | CN100505558C Radio frequency signal bias control using bypass conversion for low power high linearity receiver |
| 06/24/2009 | CN100505528C Method and circuit for preserving linearity of a RF power amplifier |
| 06/24/2009 | CN100505522C Buffer amplifier, driver IC, and display apparatus using that driver IC |
| 06/24/2009 | CN100505521C Amplifier circuit and method for preserving linearity of an power amplifier |
| 06/24/2009 | CN100505520C Amplifier circuit, semiconductor device and electronic apparatus |
| 06/24/2009 | CN100505519C Method and apparatus for realizing a low noise amplifier |
| 06/23/2009 | US7551905 Distortion compensation apparatus |
| 06/23/2009 | US7551688 Waveforms for envelope tracking transmitter |
| 06/23/2009 | US7551687 Distortion compensating apparatus |
| 06/23/2009 | US7551033 Dynamic bandwidth compensating method and associated apparatus |
| 06/23/2009 | US7551024 Nested transimpedance amplifier |
| 06/23/2009 | US7551023 Amplifier with low pass filter feedback |
| 06/23/2009 | US7551022 Power supply compensation |
| 06/18/2009 | WO2009075108A1 Audio power amplifier |
| 06/18/2009 | WO2009059058A3 Earhealth monitoring system and method ii |
| 06/18/2009 | US20090153251 Voltage detection type overcurrent protection device for class-d amplifier |
| 06/18/2009 | US20090153248 Amplifier with dynamic bias |
| 06/18/2009 | US20090153241 Simultaneous filtering and compensation circuitry and method in chopping amplifier |
| 06/17/2009 | EP2070278A2 Output power correction module for amplifiers in transmitters |
| 06/17/2009 | EP1851850B1 Non-linear processing of signals |
| 06/17/2009 | CN101461132A High efficiency linear power amplifiers with load compensation |
| 06/17/2009 | CN101459411A Class-D amplifier |
| 06/17/2009 | CN100502230C Active bias circuit |
| 06/17/2009 | CN100501630C Semiconductor device having voltage feedback circuit |
| 06/16/2009 | US7548836 Method and apparatus for compensating for AC coupling errors in RMS measurements |
| 06/16/2009 | US7548834 Method for processing sensor data |
| 06/16/2009 | US7548732 Power amplifier arrangement having two or more antenna coupling respective amplifiers to a supply potential |
| 06/16/2009 | US7548117 Differential amplifier having an improved slew rate |
| 06/16/2009 | US7548113 Apparatus, amplifier, system and method for receiver equalization |
| 06/16/2009 | US7547889 Photon detection device |
| 06/11/2009 | WO2009073581A1 High-linearity complementary amplifier |
| 06/11/2009 | WO2009072944A1 Load modulation arrangement |
| 06/11/2009 | WO2009072167A1 Radio transmitting apparatus and radio transmitting method |
| 06/11/2009 | WO2009072071A1 Transmitter comprising a pulse width pulse position modulator and method thereof |
| 06/11/2009 | WO2009071640A1 Current amplifier |
| 06/11/2009 | US20090146736 Baseband-Derived RF Digital Predistortion |
| 06/10/2009 | EP2068439A2 Distortion-compensation amplification apparatus and distortion compensation method |
| 06/10/2009 | EP2067255A1 Method of control slope regulation and control slope regulation apparatus |
| 06/10/2009 | EP2067253A2 Amplifier architecture for polar modulation |
| 06/10/2009 | EP2067252A2 Adaptive self-linearization |
| 06/10/2009 | EP1750369B1 Temperature compensation attenuator |
| 06/10/2009 | CN101453193A Slew rate control in output driver |
| 06/10/2009 | CN100499614C Nonlinear distortion compensator |
| 06/10/2009 | CN100499357C Linear circuit |
| 06/10/2009 | CN100499356C Dynamic allocation of power supplied by a power supply and frequency agility spectral filtering of signals |
| 06/10/2009 | CN100499355C Audio-frequency signal output apparatus |
| 06/10/2009 | CN100499264C Single band antenna and method for tuning same |
| 06/09/2009 | US7545686 Device for setting up a write current in an MRAM type memory and memory comprising |
| 06/09/2009 | US7545211 Predistortion linearization device with adjustable amplitude and shape |
| 06/09/2009 | US7545210 Gain adjustment for programmable gain amplifiers |
| 06/09/2009 | US7545209 Gain adjustment for programmable gain amplifiers |
| 06/09/2009 | CA2495010C Method and apparatus for optimizing transmitter power efficiency |
| 06/04/2009 | WO2006086257A3 Coherent interleaved sampling |
| 06/04/2009 | US20090140806 Distortion-compensation amplification apparatus and distortion compensation method |
| 06/04/2009 | US20090140802 Semiconductor integrated circuit |
| 06/03/2009 | EP2066023A1 HF broadband amplifier comprising a system for reducing distortion and associated distortion reduction method |
| 06/03/2009 | EP1825592A4 A power multiplier apparatus and method |
| 06/03/2009 | EP1820315B1 Method for controlling an EER power amplifier for digital transmission |
| 06/03/2009 | EP1097508B2 Method and apparatus for compensating for distortion in iq modulators |
| 06/03/2009 | CN201252517Y Noise suppression circuit and electron device with magnified audio power |
| 06/03/2009 | CN101449458A Amplifying circuit and method thereof |