| 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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| 02/07/2012 | US8111098 Segmented linear FM power amplifier |
| 02/07/2012 | CA2486240C Switched resonant ultrasonic power amplifier system |
| 02/02/2012 | WO2012014395A1 Amplifying device |
| 02/02/2012 | WO2012014343A1 Semiconductor integrated circuit and tuner system provided with same |
| 02/02/2012 | WO2012013218A1 Method for predistortion in a communication system |
| 02/02/2012 | WO2011109056A8 Amplifier offset and noise reduction in a multistage system |
| 02/02/2012 | US20120025917 Efficient amplification stage |
| 02/02/2012 | US20120025914 Cmos power amplifier |
| 02/02/2012 | US20120025913 Envelope amplifier |
| 02/02/2012 | US20120025911 Low Noise Amplifier with Current Bleeding Branch |
| 02/02/2012 | US20120025909 Distortion compensation apparatus and apparatus and method for transmitting signal |
| 02/02/2012 | US20120025906 Systems and Methods of RF Power Transmission, Modulation, and Amplification, Including Embodiments for Compensating for Waveform Distortion |
| 02/01/2012 | EP2413499A1 Switched capacitor circuit |
| 02/01/2012 | EP2413498A1 Doherty amplifier |
| 02/01/2012 | EP2412093A1 Amplifier supporting multiple gain modes |
| 02/01/2012 | EP1763921B1 Integrated doherty type amplifier arrangement with high power efficiency |
| 02/01/2012 | EP1552687B1 Automatically setting an operative state of a wideband amplifier |
| 02/01/2012 | CN202135097U 可变增益低噪声放大器 Variable gain low noise amplifier |
| 02/01/2012 | CN102342019A Amplifier system for cell sites and other suitable applications |
| 02/01/2012 | CN102340284A Low power voltage transconductance adjustable transconductance-constant rail-to-rail input operational amplifier |
| 02/01/2012 | CN102340283A Method and device for envelope tracking |
| 02/01/2012 | CN102340282A Amplifier with wide gain range |
| 01/31/2012 | US8108753 Method of computing partial CRCs |
| 01/31/2012 | US8107901 Feedback loop with adjustable bandwidth |
| 01/31/2012 | US8106713 Power amplifier with stabilising network |
| 01/31/2012 | US8106708 High speed low power multiple standard and supply output driver |
| 01/26/2012 | WO2011127868A3 Doherty power amplifier and signal processing method |
| 01/26/2012 | WO2011003616A8 Open-loop line driver control method and apparatus |
| 01/26/2012 | US20120019325 Current-mode amplifier |
| 01/26/2012 | US20120019320 Signal alignment for envelope tracking system |
| 01/26/2012 | US20120019318 Variable resister having resistance varying geometrically ratio and control method thereof |
| 01/26/2012 | US20120019317 Self-Oscillating Driver Circuit |
| 01/25/2012 | EP2410656A1 Method and system for signal distortion characterization and predistortion compensation using mutual coupling in a radio frequency transmit/receive system |
| 01/25/2012 | EP2410655A1 Method of power amplifier switching power control using post power amplifier power detection |
| 01/25/2012 | EP2409401A1 Digital filtering in a class d amplifier system to reduce noise fold over |
| 01/25/2012 | EP2409400A2 Common-gate common-source amplifier |
| 01/25/2012 | EP2409399A1 Cascode amplifier with protection circuitry |
| 01/25/2012 | EP1576724B1 Rf power amplifier employing bias circuit topologies for minimization of rf amplifier memory effects |
| 01/25/2012 | CN102334278A Amplification device and sensor module |
| 01/25/2012 | CN102332877A Differential complementary metal oxide semiconductor (CMOS) multimode low-noise amplifier with on-chip active Balun |
| 01/25/2012 | CN102332876A High efficiency switch mode amplifier with reduced electromagnetic interference |
| 01/25/2012 | CN102332875A Doherty power amplifier with high efficient broadband |
| 01/25/2012 | CN102332872A Method and integrated circuit for using negative capacitance to increase bandwidth of amplifier |
| 01/25/2012 | CN102332871A Gyrator circuit, wide-band amplifier and radio communication apparatus |
| 01/25/2012 | CN102332870A Power amplifier |
| 01/25/2012 | CN102332869A High-integration BTL (bridge-tied load) audio power amplifier |
| 01/25/2012 | CN102332868A Low-power-consumption wideband low-noise amplifier |
| 01/25/2012 | CN102332867A Low-noise amplifier with single-end circuit compensation structure |
| 01/25/2012 | CN101783654B High-gain broadband radio-frequency low noise amplifier |
| 01/25/2012 | CN101656510B Gate voltage control method and system for power amplifier |
| 01/25/2012 | CN101588158B Pulse width modulation amplifier |
| 01/25/2012 | CN101567665B Digital Doherty power amplifier |
| 01/25/2012 | CN101512897B Amplifier employing interleaved signals for PWM ripple suppression |
| 01/25/2012 | CN101053151B Semiconductor device and power amplifier |
| 01/24/2012 | US8102214 Controlled-gain wideband feedback low noise amplifier |
| 01/24/2012 | US8102205 Amplifier module with multiple operating modes |
| 01/24/2012 | US8102204 Amplifiers with input offset trim and methods |
| 01/24/2012 | US8102203 Offset cancellation in a capacitively coupled amplifier |
| 01/19/2012 | US20120013402 Closed-loop class-d amplifier with modulated reference signal and related method |
| 01/19/2012 | US20120013401 Power amplifier with selectable load impedance and method of amplifying a signal with selectable load impedance |
| 01/19/2012 | US20120013394 Source follower circuit or bootstrap circuit, driver circuit comprising such circuit, and display device comprising such driver circuit |
| 01/19/2012 | DE112009002482T5 Vorrichtung und Verfahren zur Breitbandverstärker-Linearisierung Apparatus and method for broadband amplifier linearization |
| 01/19/2012 | DE102005032093B9 Verstärkeranordnung Amplifier arrangement |
| 01/18/2012 | EP2408127A1 Radio-frequency amplifier system |
| 01/18/2012 | EP2408105A1 Mute control circuit and electronic device using the same |
| 01/18/2012 | EP2408104A1 System and method for compensating for changes in an output impedance of a power amplifier |
| 01/18/2012 | EP2406927A1 A digital predistortion circuit with extended operating range and a method thereof |
| 01/18/2012 | EP2406880A1 Method and apparatus for linearizing a non-linear power amplifier |
| 01/18/2012 | EP2406879A1 Detection of data in signals with data pattern dependent signal distortion |
| 01/18/2012 | EP2311185B1 A pre-distortion method and device to enhance the power utility of power amplifiers in wireless digital communication applications |
| 01/18/2012 | EP1750298B1 RF power transistor with impedance matched output electrode |
| 01/18/2012 | CN202121549U Low-middle noise amplifier bypass system of multi-carrier base station amplifier |
| 01/18/2012 | CN102324900A Power amplifier linearization using cancellation-based feed forward methods and systems |
| 01/18/2012 | CN102324898A Broadband automatic biasing Darlington linear amplifier circuit with linear compensation |
| 01/18/2012 | CN102324897A Improved broadband self-bias Darlington linear amplifier circuit |
| 01/18/2012 | CN102324896A Low-noise broadband amplifier with linearity compensation |
| 01/18/2012 | CN102324895A POP noise suppression circuit and method |
| 01/18/2012 | CN102324894A Practical peak holding circuit |
| 01/18/2012 | CN102324893A Amplifier structure for improving output consistency of CCDs (Charge Coupled Devices) |
| 01/18/2012 | CN101588125B Power-supply apparatus and control method, power amplifying device |
| 01/18/2012 | CN101505140B Trans-impedance amplifier with low noise and high gain-bandwidth product |
| 01/17/2012 | US8099073 Noise reduction in amplifier circuitry using single-sideband chopper stabilization |
| 01/17/2012 | US8098095 Power amplifier |
| 01/17/2012 | US8098091 Method in the compensation of unlinearities in an amplifier, and uses of the method and the amplifier |
| 01/17/2012 | US8096961 Switched resonant ultrasonic power amplifier system |
| 01/12/2012 | WO2012004702A2 Broadband transistor bias network |
| 01/12/2012 | WO2012004039A1 Linear differential amplifier having high input impedance |
| 01/12/2012 | WO2011145002A3 Multi-band high-efficiency doherty amplifier |
| 01/12/2012 | US20120007681 Method and system for a feedback transimpedance amplifier with sub-40khz low-frequency cutoff |
| 01/12/2012 | US20120007680 Variable gain amplifier |
| 01/12/2012 | US20120007673 Amplifier with wide gain range |
| 01/12/2012 | US20120007672 Linearization Device for a Power Amplifier |
| 01/12/2012 | US20120007670 System and method for controlling radio frequency transmissions from an electronic device |
| 01/12/2012 | DE102010026629A1 Linearer differentieller Verstärker mit hoher Eingangsimpedanz Linear differential amplifier with high input impedance |
| 01/11/2012 | EP2405277A2 Systems and methods of RF power transmission, modulation, and amplification |
| 01/11/2012 | EP2404383A2 Apparatus and method for improving linearity of transmitter |
| 01/11/2012 | EP2404377A2 Amplifier system for cell sites and other suitable applications |
| 01/11/2012 | EP1845624B1 Transmission device and wireless communication apparatus |
| 01/11/2012 | EP1728084B1 Measuring circuit for the output of a power amplifier and a power amplifier comprising the measuring circuit |
| 01/11/2012 | CN1853343B Amplifier |