| 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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| 09/21/2011 | CN102195569A Systems and methods for positive and negative feedback of cascode transistors for a power amplifier |
| 09/21/2011 | CN102195568A Power series digital predistorter and distortion compensation control method thereof |
| 09/21/2011 | CN102195567A Power amplifier linearization feedback methods and systems |
| 09/21/2011 | CN102195566A Static noise cancelling circuit of audio amplifier |
| 09/21/2011 | CN101242159B Systems and methods for power amplifiers with voltage boosting multi-primary transformers |
| 09/20/2011 | US8024157 Device for detecting voltage disturbance |
| 09/20/2011 | US8022772 Cascode amplifier with protection circuitry |
| 09/20/2011 | US8022771 Linearized trans-impedance amplifiers |
| 09/20/2011 | US8022762 Multi-stage CMOS power amplifier |
| 09/20/2011 | US8022758 Impedance matching circuit and method thereof |
| 09/20/2011 | CA2395048C Method and processor for determining loading of a telecommunications system and applications of the system-loading determinaton |
| 09/15/2011 | WO2011112129A1 A decomposition transmitting system and method for improving efficiency and linearity |
| 09/15/2011 | WO2011111140A1 Variable gain amplifier |
| 09/15/2011 | US20110223875 Electronic apparatus, transmitter, amplifier, and amplifier control method |
| 09/15/2011 | US20110222712 Audio output driver for reducing electromagnetic interference and improving audio channel performance |
| 09/15/2011 | US20110222703 Switching power amplifier for quantized signals |
| 09/15/2011 | US20110221532 Semiconductor integrated circuit device and communication system |
| 09/15/2011 | US20110221531 Variable gain amplifier and high-frequency signal receiving apparatus comprising the same |
| 09/15/2011 | US20110221529 Class d amplifier |
| 09/15/2011 | US20110221528 Balun function with reference enhancement in single-ended port |
| 09/15/2011 | US20110221527 Digital predistortion apparatus and method for improving performance using peak level expansion |
| 09/15/2011 | US20110221526 Method and apparatus for a gain control circuit via a high frequency signal |
| 09/15/2011 | US20110221525 Radio apparatus, distortion correction device, and distortion correction method |
| 09/15/2011 | US20110221524 Radio apparatus, distortion correction device, and distortion correction method |
| 09/15/2011 | US20110221522 Sharing of inductor interstage matching in parallel amplification system for wireless communication systems |
| 09/14/2011 | EP2365629A1 Communication device and power correction method |
| 09/14/2011 | EP2365628A1 Signal preprocessing for envelope modulators |
| 09/14/2011 | CN201976071U Front-end amplifier of wireless communication receiver |
| 09/14/2011 | CN1574610B Method of influencing an input signal and predistorter |
| 09/14/2011 | CN102187570A Integrated circuit with parallel sets of transistor amplifiers having different turn on power levels |
| 09/14/2011 | CN102185568A Multi-combination power amplifier and realizing method thereof |
| 09/14/2011 | CN102185567A Low-noise amplifier used in navigation system receiver and having automatic calibration function |
| 09/14/2011 | CN102185566A Technology for controlling radio frequency power amplifier for compensating voltage change of system power supply |
| 09/14/2011 | CN102185565A Power amplifier and power amplifier circuit |
| 09/14/2011 | CN102185564A Power amplifier and power amplifier circuit |
| 09/14/2011 | CN102185563A Doherty power amplifier device |
| 09/14/2011 | CN101291137B Feedforward amplifier |
| 09/13/2011 | US8019572 Method and apparatus for exploring by wave propagation |
| 09/13/2011 | US8019306 Amplifier and communication apparatus |
| 09/13/2011 | US8018278 Pre-distortion apparatus of power amplifier and method thereof |
| 09/13/2011 | US8018274 Switched capacitor amplifier circuit with clamping |
| 09/13/2011 | US8018273 Filter circuit |
| 09/09/2011 | WO2011109209A1 Reducing pulse error distortion |
| 09/09/2011 | WO2011109158A1 Planar audio amplifier output inductor with current sense |
| 09/09/2011 | WO2011109056A1 Amplifier offset and noise reduction in a multistage system |
| 09/09/2011 | WO2011108103A1 Transmitter module and phased array antenna device |
| 09/09/2011 | WO2011108063A1 Compound semiconductor device and method for manufacturing same |
| 09/09/2011 | WO2011108057A1 Transmitter circuit using polar modulation system, and communication device |
| 09/09/2011 | WO2011107671A1 Current-voltage converter having a current reflector, input stage of an amplifier and corresponding amplifier |
| 09/09/2011 | WO2011106976A1 Optical receiver, control apparatus and control method therefor |
| 09/08/2011 | US20110217945 Dual carrier amplifier circuits and methods |
| 09/07/2011 | EP2011230B1 Doherty amplifier |
| 09/07/2011 | CN201966873U 交点下移电路 Intersection down circuit |
| 09/07/2011 | CN201966872U 一种内置天线低噪声放大电路 A built antenna low noise amplifier |
| 09/07/2011 | CN1770623B Method for high efficiency audio amplifier |
| 09/07/2011 | CN102176659A Transconductance-enhanced recovery current folded MOS (metal oxide semiconductor) transistor cascade amplifier |
| 09/07/2011 | CN102176658A Symmetrically-folded MOS (metal oxide semiconductor) transistor cascade amplifier with broadband and low-power consumption |
| 09/07/2011 | CN102176657A Positive-feedback-broadband LNA (low noise amplifier) for millimeter wave frequency range |
| 09/07/2011 | CN101208859B High frequency power amplifier distortion compensation device |
| 09/06/2011 | US8014443 Non-linear distortion detection method and distortion compensation amplifying device |
| 09/06/2011 | US8013864 Method and system for visualizing multivariate statistics |
| 09/06/2011 | US8013679 Operational amplifier |
| 09/06/2011 | US8013676 High-efficiency power amplifier |
| 09/06/2011 | US8013672 Programmable gain amplifier and embedded filter |
| 09/06/2011 | US8013671 Semiconductor integrated circuit |
| 09/01/2011 | WO2011105359A1 Amplifying device, signal processing device, wireless communication device, connector mounting structure, and coaxial connector |
| 09/01/2011 | WO2011104933A1 Bias circuit, lna, lnb, receiver for communication, transmitter for communication, and sensor system |
| 09/01/2011 | WO2011103767A1 Method and device for digitatl pre-distortion precessing |
| 09/01/2011 | US20110210789 Power series digital predistorter and distortion compensation control method thereof |
| 09/01/2011 | US20110210788 Semiconductor integrated circuit device and transmission and reception system |
| 08/31/2011 | EP2362543A2 Power series digital predistorter and distortion compensation control method thereof |
| 08/31/2011 | EP2362542A2 Calculating apparatus, distortion correcting apparatus, amplifying apparatus, and calculating method |
| 08/31/2011 | EP2362541A1 Parallel amplifier |
| 08/31/2011 | EP1400012B1 Distributed circular geometry power amplifier architecture |
| 08/31/2011 | CN201956977U 具有提高的噪声特性的音频放大电路 Audio amplifier circuit having improved noise characteristics of the |
| 08/31/2011 | CN201956976U 一种音频放大器开启控制电路 An audio amplifier control circuit open |
| 08/31/2011 | CN201956975U 低噪声放大器 Low-noise amplifier |
| 08/31/2011 | CN201956974U 一种具有信号自适应性的射频入射频出dpd功放系统 An adaptive radio frequency signal having a dpd into RF amplifier system |
| 08/31/2011 | CN102171924A Network for controlling the power supply to a system of active elements |
| 08/31/2011 | CN102170271A Power amplification device and power amplification circuit |
| 08/31/2011 | CN102170270A High frequency power amplifier and operating method thereof |
| 08/31/2011 | CN102170269A Power amplification device and power amplification circuit |
| 08/31/2011 | CN102170268A Power amplification device and power amplification circuit |
| 08/31/2011 | CN101499781B Distortion compensating apparatus and power amplifier apparatus |
| 08/31/2011 | CN101499780B Re-configurable low noise amplifier utilizing feedback capacitors |
| 08/31/2011 | CN101262204B Voltage control circuit and gain-variable amplifier |
| 08/30/2011 | US8010322 Signal conditioning IC with conditioning-coefficient memory |
| 08/30/2011 | US8008971 System and method for controlling radio frequency transmissions from an electronic device |
| 08/30/2011 | US8008970 Apparatus and method for enabled switch detection |
| 08/30/2011 | US8008968 Multipath amplifier |
| 08/25/2011 | WO2011103101A1 Methods and apparatus for a switchable balun for combined bluetooth and wlan operation |
| 08/25/2011 | WO2011102177A1 Amplification device and wireless transmission device provided with same, and gain adjusting method for amplification device |
| 08/25/2011 | WO2011102092A1 Digital amplifier |
| 08/25/2011 | WO2011080724A3 Power amplifier with feedback impedance for stable output |
| 08/25/2011 | US20110204976 Impedance transformer, integrated circuit device, amplifier, and communicator module |
| 08/25/2011 | US20110204975 Calculating apparatus, distortion correcting apparatus, amplifying apparatus, and calculating method |
| 08/25/2011 | US20110204974 Apparatus for improving performance at low power region in a doherty amplifier |
| 08/25/2011 | US20110204972 Amplifying circuit |
| 08/24/2011 | EP2360775A2 Transmission line, impedance transformer, integrated circuit mounted device, and communication device module |
| 08/24/2011 | EP2359473A1 Amplifier with programmable off voltage |