| 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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| 08/08/2012 | CN101951226B Silicon germanide bipolar-complementary metal oxide semiconductor AB power amplifier |
| 08/08/2012 | CN101807886B Radio frequency power amplifying device and analog predistortion correction method thereof |
| 08/08/2012 | CN101394191B Low noise amplifier module and radio communication apparatus |
| 08/08/2012 | CN101351961B High-efficiency composite amplifier |
| 08/08/2012 | CN101027817B Blind signal separation using I and Q components |
| 08/07/2012 | US8239171 System and method of eliminating interference for impurities measurement in noble gases |
| 08/07/2012 | US8239170 Complex signal decomposition and modeling |
| 08/07/2012 | US8237620 Reconfigurable radiation densensitivity bracket systems and methods |
| 08/07/2012 | US8237505 Signal amplification circuit |
| 08/07/2012 | US8237500 Signal correction circuit for reducing errors and distortions and its associated method of operation |
| 08/02/2012 | WO2012102342A1 Power amplifier circuit, as well as transmission device and communication device using same |
| 08/02/2012 | WO2012101467A1 Efficient low noise differential amplifier, reutilizing the bias current |
| 08/02/2012 | WO2012100947A1 Amplification circuit having optimization of power |
| 08/02/2012 | WO2012080742A3 Dc offset compensation |
| 08/02/2012 | US20120194274 Integrated circuit, wireless communication unit and method for providing a power supply |
| 08/02/2012 | US20120194272 Rf power amplifier including broadband input matching network |
| 08/02/2012 | US20120194271 Amplifying device and wireless transmission device using the same |
| 08/02/2012 | US20120194270 Broadband Linearization Module And Method |
| 08/02/2012 | US20120194269 Passive amplifier |
| 08/02/2012 | DE102010035276B4 Verfahren zur Offsetkompensation eines Switched Capacitor-Verstärkers und Switched Capacitor-Verstärkeranordnung Method for offset compensation of a switched capacitor amplifier and switched capacitor amplifier arrangement |
| 08/02/2012 | DE102004002007B4 Transistoranordnung mit Temperaturkompensation und Verfahren zur Temperaturkompensation Transistor arrangement with temperature compensation and method for temperature compensation |
| 08/01/2012 | EP2482450A2 Bias control for reducing amplifier power consumption and maintaining linearity |
| 08/01/2012 | EP2482449A1 Amplification circuit having optimization of power |
| 08/01/2012 | EP2482448A1 Doherty amplifier and method of operating a Doherty amplifier |
| 08/01/2012 | EP2481150A1 Adjustable circuit architecture |
| 08/01/2012 | CN202364179U Bipolar amplifier |
| 08/01/2012 | CN202364178U Linearizing device of synthetic aperture radar transmitter |
| 08/01/2012 | CN202364177U 放大电路 Amplifier circuit |
| 08/01/2012 | CN102624343A Broken line direct-current amplifier |
| 08/01/2012 | CN102624342A Amplifier |
| 08/01/2012 | CN102624339A Series envelope tracking power supply and control system thereof |
| 08/01/2012 | CN102624338A Volterra-filtering-based power amplifier pre-distortion method for double-loop feedback model |
| 08/01/2012 | CN102624337A 2-fold switched capacitor amplifier insensitive to capacitor mismatch and sampling signal common mode |
| 08/01/2012 | CN102624336A Electronic device and method for increasing output power of electronic device |
| 07/31/2012 | US8232839 Semiconductor integrated circuit device and transmission and reception system |
| 07/31/2012 | US8232838 Audio dropout amplifier |
| 07/31/2012 | CA2687326C Method and apparatus for providing a cartesian training waveform |
| 07/26/2012 | WO2012099768A1 Self-biasing radio frequency circuitry |
| 07/26/2012 | WO2012098754A1 Output-mode switching amplifier |
| 07/26/2012 | US20120188021 Low 1/f noise high-frequency broadband amplifier (DC-12 GHz) |
| 07/26/2012 | US20120188017 Power supply circuit of power amplifier, and terminal |
| 07/26/2012 | US20120188011 High efficiency multiple power mode linear radio frequency power amplifier |
| 07/26/2012 | US20120187951 Power amplifier for a magnetic resonance device |
| 07/26/2012 | DE112005003645B4 Verstärkerschaltung mit einstellbarer Verstärkung Amplifier circuit with adjustable gain |
| 07/25/2012 | EP2479890A1 Amplifier system for a power converter |
| 07/25/2012 | EP2479889A1 Amplifier system and method of operating an amplifier system |
| 07/25/2012 | EP2479888A1 Power supply circuit of power amplifier, and terminal |
| 07/25/2012 | EP2478634A1 Method and arrangement in a mobile communications system |
| 07/25/2012 | EP2478633A1 Method and arrangement in a mobile communication system |
| 07/25/2012 | EP2419996B1 Amplifier circuit, integrated circuit and radio frequency communication unit |
| 07/25/2012 | CN202353517U Ultralow noise direct current difference and sum value amplifying device with high common-mode rejection ratio |
| 07/25/2012 | CN102612803A Digitally controlled AC protection and attenuation circuit |
| 07/25/2012 | CN102611395A Low-noise amplifier in multi-mode navigation type radiofrequency chip |
| 07/25/2012 | CN102611394A Low-noise amplifier and a front-end system with same |
| 07/25/2012 | CN102611393A Radio frequency power amplifier system having waveband switching function |
| 07/25/2012 | CN101989836B Efficient audio amplifier and related method thereof |
| 07/25/2012 | CN101847968B High-performance D type audio power amplifier with high-order multipath feedback structure |
| 07/25/2012 | CN101479946B Transmission circuit and communication device |
| 07/25/2012 | CN101252352B Semiconductor integrated circuit device and high-frequency power amplifier module |
| 07/24/2012 | US8229709 Method for reconstructing sparse signals from distorted measurements |
| 07/24/2012 | US8228125 Electronic circuit with cascode amplifier |
| 07/24/2012 | US8228119 Amplifying circuit |
| 07/19/2012 | WO2012097085A1 Systems and methods for a radio frequency transmitter with improved linearity and power out utilizing pre-distortion and a gan (gallium nitride) power amplifier device |
| 07/19/2012 | WO2012097035A1 A buffer to drive reference voltage |
| 07/19/2012 | WO2012096834A1 Apparatus and method for miller compensation for multi-stage amplifier |
| 07/19/2012 | WO2012096750A2 System and method for distortion compensation in response to frequency detection |
| 07/19/2012 | WO2012096442A1 Voltage variable type digital audio amplifying device for noise compensation and method therefor |
| 07/19/2012 | WO2012096337A1 Amplifying device |
| 07/19/2012 | WO2012064155A3 Device and method for increasing output efficiency of mobile communication terminal |
| 07/19/2012 | US20120183299 System and method for distortion compensation in response to frequency detection |
| 07/19/2012 | US20120182075 Apparatus and method for miller compensation for multi-stage amplifier |
| 07/19/2012 | CA2762135A1 Amplifier system for a power converter |
| 07/18/2012 | EP2476209A1 Impedance matching method for a multi-band antenna, and transmission or reception channel having automatic matching |
| 07/18/2012 | EP2248316B1 A method for compensating signal distortion in an emitting payload |
| 07/18/2012 | EP2131492B1 Rf amplification device |
| 07/18/2012 | EP2055000B1 Buffer device for switched capacity circuit |
| 07/18/2012 | CN1862952B High frequency power amplifier, transmitter and mobile communication terminal using the power amplifier |
| 07/18/2012 | CN102598504A Amplifying device |
| 07/18/2012 | CN102598503A The double integral method of powering up or down a speaker |
| 07/18/2012 | CN102598494A Power supplying system |
| 07/18/2012 | CN102594288A Stage matching circuit of radio-frequency power amplifier |
| 07/18/2012 | CN102594287A Variable matching circuit |
| 07/18/2012 | CN102594272A Circuit for reducing electromagnetic interference of class-D audio-frequency power amplifier |
| 07/18/2012 | CN102594271A Biasing circuit of power amplifier |
| 07/18/2012 | CN102594267A Front-end broadband low-noise amplifier for digital television tuner |
| 07/18/2012 | CN102594266A Multi-stage multi-channel Doherty amplifier |
| 07/18/2012 | CN102594265A Electric adjusting Doherty power amplifier |
| 07/18/2012 | CN102594264A Radio frequency power amplifier and input matching circuit thereof |
| 07/18/2012 | CN102594263A Simple and high-efficiency super class-A power amplifier |
| 07/18/2012 | CN101627551B Digital convertible radio snr optimization |
| 07/18/2012 | CN101610068B Circuit for reducing noise figure of amplifier |
| 07/18/2012 | CN101595638B Bias circuit and semiconductor integrated circuit using the same |
| 07/18/2012 | CN101083452B Multi-flavor power-saving signal generator amplifier and operation method thereof under power saving mode |
| 07/18/2012 | CN101057396B Tunable cascode LNA with flat gain response over a wide frequency range |
| 07/12/2012 | WO2012094461A2 Circuit and method for reducing input leakage in chopped amplifier during overload conditions |
| 07/12/2012 | WO2012094188A1 Digital compensation of a nonlinear system |
| 07/12/2012 | US20120177143 Composite amplifier, transmitter, and composite amplifier control method |
| 07/12/2012 | US20120176199 Transimpedance amplifier, integrated circuit and system |
| 07/11/2012 | EP2475097A1 Power synthesis circuit for radio frequency power amplifier |
| 07/11/2012 | EP2475096A1 Power amplifier and receiver in user device |