| 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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| 07/23/2009 | WO2009090302A1 Apparatus, method and computer program for error compensation |
| 07/23/2009 | WO2009090065A1 Amplifier arrangement and method |
| 07/23/2009 | WO2009037625A3 Tunable rf filter |
| 07/23/2009 | US20090184786 Multi-segment primary and multi-turn secondary transformer for power amplifier systems |
| 07/23/2009 | US20090184769 Negative-feedback type ultra-wideband signal amplification circuit |
| 07/23/2009 | US20090184762 Optimized resistor network for programmable transconductance stage |
| 07/23/2009 | DE102009003892A1 Systeme und Verfahren für Kaskoden-Schaltleistungsverstärker Systems and methods for cascode switch mode power amplifier |
| 07/23/2009 | DE102009003891A1 Transformator mit einer primärer Wicklung mit mehreren Segmenten und einer sekundären Wicklung mit mehreren Windungen für ein Leistungsverstärkersystem Transformer having a primary winding with a plurality of segments and a secondary winding having a plurality of turns on a power amplifier system |
| 07/22/2009 | EP2007008A9 Circuit and method for reducing noise |
| 07/22/2009 | EP1829205B1 Power amplifier system |
| 07/22/2009 | CN101490949A Polar-modulation transmission device |
| 07/22/2009 | CN100517957C Signal amplifier |
| 07/22/2009 | CN100517956C Class-D amplifier |
| 07/21/2009 | US7565273 Determination of the age, identification and sealing of a product containing volatile components |
| 07/21/2009 | US7565116 High frequency module |
| 07/21/2009 | US7564638 Preamplifier circuit and method for a disk drive device |
| 07/21/2009 | US7564305 System and method for self-cancellation of Nth-order intermodulation products |
| 07/21/2009 | US7564303 Semiconductor power device and RF signal amplifier |
| 07/21/2009 | US7564302 Method and system for gain control and power saving in broadband feedback low-noise amplifiers |
| 07/16/2009 | WO2009088813A2 Multi-linearity mode lna having a deboost current path |
| 07/16/2009 | WO2009088278A2 Temperature compensation method for ion sensor using vt extractor circuit |
| 07/16/2009 | WO2009086798A1 Electronic amplifier |
| 07/16/2009 | US20090179706 Capacitor Gain-Boost Circuit |
| 07/16/2009 | US20090179705 Impedance-mapping amplifier circuit with exclusively reactive negative feedback |
| 07/16/2009 | US20090179702 Doherty amplifier |
| 07/16/2009 | US20090179701 Fast switch for controlling a differential-pair amplifier |
| 07/16/2009 | DE10035066B4 System zur speichergestützten Lasteinstellung eines Verstärkers System for memory-based load setting of an amplifier |
| 07/15/2009 | EP2078337A2 Determining on chip load impedance of rf circuit |
| 07/15/2009 | EP1815590A4 Transmit signal generator and method |
| 07/15/2009 | EP1774687A4 System and method for digital timing error correction in a communications system utilizing adaptive predistortion |
| 07/15/2009 | CN101485081A RF power amplifiers |
| 07/15/2009 | CN100514852C Power amplifier circuit and method for amplifying RF signals |
| 07/15/2009 | CN100514850C Amplifier |
| 07/15/2009 | CN100514848C Broad-band high frequency linear amplifier and integrated circuit chip |
| 07/15/2009 | CN100514847C Amplifier circuit |
| 07/15/2009 | CN100514846C Device and method for analyzing power gain and dissipation in multistage radio frequency amplifier |
| 07/15/2009 | CN100514845C Operational amplifier |
| 07/15/2009 | CN100514844C Amplifier circuit |
| 07/15/2009 | CN100514843C Power controller for power amplifier of mobile communication terminal |
| 07/15/2009 | CN100514842C Signal output circuit, audio signal output apparatus using the same, and electronic device |
| 07/14/2009 | US7562108 High bandwidth high gain receiver equalizer |
| 07/14/2009 | US7561856 Distortion compensation amplifying apparatus and base station |
| 07/14/2009 | US7561636 Digital predistortion apparatus and method in power amplifier |
| 07/14/2009 | US7560992 Dynamically biased amplifier |
| 07/14/2009 | US7560991 Dynamically compensated operational amplifier |
| 07/14/2009 | CA2507033C Closed loop transmitter control for power amplifier in an eas system |
| 07/09/2009 | WO2009083709A1 Amplifier circuit |
| 07/09/2009 | WO2009083467A1 A controller |
| 07/09/2009 | WO2009082922A1 High efficiency power amplifier |
| 07/09/2009 | US20090174485 Over-current sensing during narrow gate drive operation of class d output stages |
| 07/09/2009 | US20090174480 Systems and Methods for Cascode Switching Power Amplifiers |
| 07/09/2009 | US20090174477 Multi-segment primary and multi-turn secondary transformer for power amplifier systems |
| 07/09/2009 | US20090174476 Noise reduction circuit for canceling leakage signal |
| 07/09/2009 | US20090174475 Smart linearized power amplifier and related systems and methods |
| 07/09/2009 | US20090174474 Power amplifier |
| 07/08/2009 | EP2077616A1 Transistor output circuit and method |
| 07/08/2009 | EP2077615A1 Operational amplifier and integrating circuit |
| 07/08/2009 | EP1735906A4 Model based distortion reduction for power amplifiers |
| 07/08/2009 | EP1435693B1 Amplification circuit |
| 07/08/2009 | CN101479933A Controlling switching mode power supply of power amplifier |
| 07/08/2009 | CN101479932A Method and apparatus for providing adaptive supply voltage control of a power amplifier |
| 07/08/2009 | CN101478295A Differential amplifier circuit and drive circuit of liquid crystal display unit using the same |
| 07/08/2009 | CN101478290A Method for improving linearity of multi-stage power amplifier circuit and circuit therefor |
| 07/08/2009 | CN101478289A E type power amplifier digital power control circuit applied on low power output |
| 07/08/2009 | CN101478288A Method for enhancing efficiency of radio frequency power amplifier and radio frequency power amplifier circuit |
| 07/08/2009 | CN100512391C Circuit for generating reference voltage |
| 07/08/2009 | CN100512245C Adaptive equalizer with DC offset compensation |
| 07/08/2009 | CN100511981C Semiconductor integrated circuit and operational amplifier circuit |
| 07/08/2009 | CN100511979C Power amplifying system and method for generating pre-distortion signals |
| 07/08/2009 | CN100511977C High stable amplifying circuit |
| 07/08/2009 | CN100511976C Digital pre-distorting power amplifier and implementing method thereof |
| 07/08/2009 | CN100511975C Predistortion amplifier for compensating distortion |
| 07/08/2009 | CN100511974C Self-adapting digital pre-distortion circuti, corresponding method and wireless communication system |
| 07/08/2009 | CN100511973C Voltage to current converter and method for converting |
| 07/08/2009 | CN100511972C High-efficiency amplifier |
| 07/08/2009 | CN100511970C System and method of RF power amplification |
| 07/07/2009 | US7558332 Adaptive controller for linearization of transmitter with impairments |
| 07/07/2009 | US7557655 Systems and methods for isolating an analog signal |
| 07/07/2009 | US7557654 Linearizer |
| 07/07/2009 | US7557649 DC offset cancellation circuit and programmable gain amplifier using the same |
| 07/02/2009 | WO2009081619A1 Buffer and display device |
| 07/02/2009 | WO2009081341A1 3-way doherty amplifier with minimum output network |
| 07/02/2009 | WO2009081106A1 Linearised power amplifier |
| 07/02/2009 | WO2009080752A1 Multiport amplifiers in communications satellites |
| 07/02/2009 | US20090167440 Low Noise Amplifier |
| 07/02/2009 | US20090167433 Audio apparatus |
| 07/02/2009 | US20090167432 Instrumentation amplification with input offset adjustment |
| 07/02/2009 | US20090167430 Switched-Capacitor Amplifier Arrangement and Method |
| 07/02/2009 | DE102008025347A1 Elektronischer Verstärker Electronic amplifier |
| 07/02/2009 | CA2708503A1 Multiport amplifiers in communications satellites |
| 07/01/2009 | EP2075910A1 Instrumentation amplification with input offset adjustment |
| 07/01/2009 | EP1552603B1 A power amplifier system |
| 07/01/2009 | EP1518335B1 Method for tuning an envelope tracking amplification system |
| 07/01/2009 | EP1476949B1 Power amplification apparatus of portable terminal |
| 07/01/2009 | CN201266907Y Power amplifier bias circuit with power control mode |
| 07/01/2009 | CN101473530A Adaptive pre-distortion |
| 07/01/2009 | CN101473529A Switch mode power magnification |
| 07/01/2009 | CN101471627A Feedback resistance network with adjustable feedback gain |
| 07/01/2009 | CN101471626A Method and system supporting production of a semiconductor device using a plurality of fabrication processes |
| 07/01/2009 | CN101471625A Amplifier and the method thereof |