| 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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| 01/29/2009 | US20090027116 Method and integrated circuit including an amplifier calibration circuit |
| 01/29/2009 | DE102008023384A1 Strom-Rückkopplungs-Instrumentenverstärker mit selbsttätiger Nullpunkt-Einstellung Current-feedback instrumentation amplifier with automatic zero-setting |
| 01/28/2009 | EP2019486A1 RF transmitters |
| 01/28/2009 | EP1576726B1 Composite amplifier structure |
| 01/28/2009 | CN101356724A Low noise amplifier and wireless communication system |
| 01/28/2009 | CN101355345A Power amplifier |
| 01/28/2009 | CN100456641C Method and apparatus for optimizing transmitter power efficiency |
| 01/28/2009 | CN100456632C Doherty amplifier |
| 01/27/2009 | US7484139 Amplifier fault detection circuit |
| 01/27/2009 | US7483495 Layered modulation for digital signals |
| 01/27/2009 | US7482887 Multi-band tunable resonant circuit |
| 01/27/2009 | US7482879 Variable gain amplifier and communication apparatus |
| 01/27/2009 | US7482878 Radio frequency power amplifier circuit |
| 01/27/2009 | US7482877 Power protecting apparatus and method for power amplifier |
| 01/27/2009 | US7482873 Preserving linearity of a rf power amplifier |
| 01/27/2009 | US7482869 High efficiency amplification |
| 01/27/2009 | US7482866 Audio system with power-on/off noise suppression and audio amplifier thereof |
| 01/27/2009 | US7482864 Method and system for FET-based amplifier circuits |
| 01/22/2009 | WO2009011071A1 Amplifier device with nonlinear-distortion compensation |
| 01/22/2009 | WO2009010055A1 Method of determining an impedance function of a loudspeaker |
| 01/22/2009 | WO2009009987A1 Method and device for tracking doherty power amplification servic |
| 01/22/2009 | WO2008144593A3 Enhanced cascode performance by reduced impact ionization |
| 01/22/2009 | WO2006019785A3 Programmable low noise amplifier and method |
| 01/22/2009 | US20090021307 Multi-band, inductor re-use low noise amplifier |
| 01/22/2009 | US20090021304 Model based distortion reduction for power amplifiers |
| 01/22/2009 | US20090021303 Distortion-Driven Power Amplifier Power Supply Controller |
| 01/22/2009 | US20090021302 Method and apparatus for reducing current consumption of mimo systems |
| 01/22/2009 | US20090021301 Efficient Composite Amplifier |
| 01/21/2009 | EP2016675A1 Cmos temperature compensated transmitter circuit with merged mixer and variable gain amplifier |
| 01/21/2009 | EP2016672A1 Method and arrangement for optimizing efficiency of a power amplifier |
| 01/21/2009 | EP1820268A4 Voltage clamp for improved transient performance of a collector voltage controlled power amplifier |
| 01/21/2009 | EP1815592B1 Method and system for detemining the amplitude and/or phase of the output signal of a transmission link according to the amplitude of the input signal |
| 01/21/2009 | EP1590893B1 Feed forward amplifier system employing self-generating alignment lists and adaptive controller |
| 01/21/2009 | EP1397852A4 Electronic isolator |
| 01/21/2009 | EP1350312B1 Pre-distortion of non-linear devices by post-detection |
| 01/21/2009 | CN201185406Y Circuit and electronic device for eliminating impulsive sound of starting up an audio power amplifier |
| 01/21/2009 | CN101351961A High-efficiency composite amplifier |
| 01/21/2009 | CN101350605A Improved bipolar type variable gain amplifier with minimum gain control |
| 01/21/2009 | CN101350597A Method for modeling wideband radio-frequency power amplifier |
| 01/21/2009 | CN101350596A Delay modulator pre-distortion circuit for an amplifier |
| 01/21/2009 | CN101350595A Multipurpose linear circuit module |
| 01/21/2009 | CN101350594A Method, circuit and electronic device for eliminating start-up sound-breaking of audio circuit |
| 01/21/2009 | CN101350593A Circuit for suppressing POP noise |
| 01/21/2009 | CN101350592A Ultra-wideband low noise amplifier |
| 01/21/2009 | CN100454763C Cyclic analog-to-digital converters |
| 01/20/2009 | US7479830 Differential amplifier using body-source cross coupling |
| 01/20/2009 | US7479828 Selecting samples for amplifier digital predistortion estimation |
| 01/20/2009 | US7479827 Multi-mode power amplifier with high efficiency under backoff operation |
| 01/20/2009 | US7479826 Chopper amplifier circuit and semiconductor device |
| 01/15/2009 | WO2009009652A2 Segmented power amplifier |
| 01/15/2009 | WO2009009647A1 Power amprifier amplitude modulator system and method |
| 01/15/2009 | WO2008099113A3 Reconfigurable power amplifier and use of such amplifier for making a multistandard amplification stage for mobile phone communications |
| 01/15/2009 | US20090015346 Electronic device and method of matching the impedance thereof |
| 01/15/2009 | US20090015336 Segmented power amplifier |
| 01/15/2009 | US20090015333 Power amplifier module and a time division multiple access radio |
| 01/15/2009 | US20090015326 Distortion compensation apparatus |
| 01/15/2009 | US20090015325 Method and apparatus for pre-conditioning an electrical signal |
| 01/15/2009 | US20090015323 Balanced amplifier with protection circuit |
| 01/15/2009 | US20090013800 Flowmeter of the coriolis type |
| 01/15/2009 | DE102008026866A1 MuGFET-Schaltung zur Erhöhung eines Ausgangswiderstands MuGFET circuit to increase an output resistance |
| 01/14/2009 | EP2013630A2 Systems and methods of rf power transmission, modulation, and amplification |
| 01/14/2009 | EP1751856B1 Multi-channel pulse modulator system |
| 01/14/2009 | EP1451925B1 Composite amplifier |
| 01/14/2009 | CN201181929Y Output stage structure for reducing switch output transient noise of audio frequency power amplifier |
| 01/14/2009 | CN101345513A Switching audio power amplifier with de-noise function |
| 01/14/2009 | CN101345512A Method for over-temperature protection through monitoring power tube junction temperature by collecting anode penetration current |
| 01/14/2009 | CN100452663C Transmission device, transmission power control method, and radio communication device |
| 01/14/2009 | CN100452645C Power amplifying device |
| 01/14/2009 | CN100452644C Method for realizing memory-type power amplifier linearization and its baseband predistortion device |
| 01/14/2009 | CN100452643C Alternative-gaint and phase control system and method |
| 01/14/2009 | CN100451586C High-frequency wideband amplification circuit used for piezoresistive dynamic pressure sensor |
| 01/13/2009 | US7477107 Protection circuit and method for RF power amplifiers in WLAN transceivers |
| 01/13/2009 | US7477106 Power amplifier with bias control |
| 01/13/2009 | US7477101 Fast charge circuit for use in amplifiers |
| 01/08/2009 | WO2009005967A1 Methods and systems for stabilizing an amplifier |
| 01/08/2009 | WO2009005630A1 Wireless communication device including a standby radio |
| 01/08/2009 | WO2009005430A1 Improved amplifying device |
| 01/08/2009 | WO2009004534A1 Electronic device and a method of biasing a mos transistor in an integrated circuit |
| 01/08/2009 | WO2008115749A3 Power efficient multistage amplifier and design method |
| 01/08/2009 | US20090011728 DCDC converter unit, power amplifier, and base station using the same |
| 01/08/2009 | US20090009255 Unilateral feedback power amplifier and method for realizing the same |
| 01/08/2009 | US20090009254 Current sense amplifier for voltage converter |
| 01/08/2009 | US20090009250 Low Noise Amplifier |
| 01/08/2009 | US20090009243 Methods and Apparatus for Controlling Leakage and Power Dissipation in Radio Frequency Power Amplifiers |
| 01/08/2009 | US20090009242 Line driver capable of automatically adjusting output impedance |
| 01/08/2009 | US20090009240 Amplifier Circuit |
| 01/08/2009 | US20090009239 Low glitch offset correction circuit for auto-zero sensor amplifiers and method |
| 01/08/2009 | US20090009236 Step-down circuit with stabilized output voltage |
| 01/08/2009 | DE112004002875B4 Temperaturkompensierte Vorspannungsschaltung für einen Leistungsverstärker A temperature-compensated bias circuit for a power amplifier |
| 01/07/2009 | EP2011260A2 Method and apparatus for adaptively controlling signals |
| 01/07/2009 | EP2011232A2 Adaptive pre-distortion |
| 01/07/2009 | EP2011231A1 Output networks in combination with linc technique |
| 01/07/2009 | EP2011230A2 Doherty amplifier |
| 01/07/2009 | EP1935089B1 Systems, methods and devices for dual closed loop modulation controller for nonlinear rf amplifier |
| 01/07/2009 | EP1709733A4 Improved power supply rejection for pulse width modulated amplifiers and automatic gain control |
| 01/07/2009 | EP1687893B1 Predistortion control device and method, assembly including a predistortion control device |
| 01/07/2009 | EP1456943B8 Attenuation control for digital power converters |
| 01/07/2009 | CN201178401Y Reverse non-linear amplifier circuit having temperature compensation |
| 01/07/2009 | CN101340178A Transmitting apparatus |
| 01/07/2009 | CN101340177A Signal processing circuit |