| 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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| 08/02/2006 | CN1813400A Apparatus, amplifier, system and method for receiver equalization |
| 08/02/2006 | CN1813399A Power control for a transmitter |
| 08/01/2006 | US7085587 Signal processing semiconductor integrated circuit device and wireless communication system |
| 08/01/2006 | US7084705 Automatic biasing of a power device for linear operation |
| 08/01/2006 | US7084703 Self-calibrated power amplifier linearizers |
| 08/01/2006 | US7084701 Preventing power-on audio output noise in a wireless telephone handset |
| 08/01/2006 | US7084700 Differential voltage amplifier circuit |
| 07/27/2006 | US20060166630 Dynamic bias for RF power amplifiers |
| 07/27/2006 | US20060164172 Radiofrequency amplifier device, in particular for cellular mobile telephone |
| 07/27/2006 | US20060164169 Power distribution and biasing in RF switch-mode power amplifiers |
| 07/27/2006 | US20060164164 Variable gain amplifier with low phase variation |
| 07/26/2006 | EP1684417A2 Method of operating a radio frequency transmitter and apparatus for controlling a radio frequency transmitter |
| 07/26/2006 | EP1684416A1 Feedforward spur cancellation approach using low IP amplifier |
| 07/26/2006 | EP1683269A2 Electronically programmable multimode circuit |
| 07/26/2006 | EP1683268A1 Power level controlling of first amplification stage for an integrated rf power amplifier |
| 07/26/2006 | EP1683267A1 Microphone preamplifier |
| 07/26/2006 | EP1683266A1 Power amplifier pre-distortion |
| 07/26/2006 | EP1614218B1 Linear amplifier |
| 07/26/2006 | EP1243109B1 An arrangement for reducing power dissipation in a line driver |
| 07/26/2006 | CN1809958A Distortion/efficiency adaptation in a variable-data-rate radio transmitter |
| 07/26/2006 | CN1809957A Power amplification device |
| 07/26/2006 | CN1809314A Amplifier system for determining parameters of a patient |
| 07/26/2006 | CN1808894A Source follower and its stable current feedback circuit |
| 07/26/2006 | CN1266834C Circuit and method for input side impedance matching of power amplifier in electronic device |
| 07/26/2006 | CN1266832C Optical receiving amplifier circuit and optical pickup unit with it |
| 07/26/2006 | CN1266831C Microwave power amplifier |
| 07/26/2006 | CN1266830C Feed-forward type distortion compensation amplifying apparatus |
| 07/26/2006 | CN1266829C Feed forward amplifier |
| 07/25/2006 | US7081796 Radio frequency low noise amplifier with automatic gain control |
| 07/25/2006 | US7081795 Predistortion circuit, low-distortion power amplifier, and control methods therefor |
| 07/25/2006 | US7081794 Paralleling digital-input amplifiers |
| 07/25/2006 | US7081793 High-efficiency amplifier, converter and methods |
| 07/25/2006 | US7081792 Operational amplifier, line driver, and liquid crystal display device |
| 07/25/2006 | US7081791 Automatically adjusting low noise amplifier |
| 07/25/2006 | US7081789 Switched capacitor circuit compensation apparatus and method |
| 07/25/2006 | US7081779 Reset signal generating circuit |
| 07/25/2006 | US7081774 Circuit having source follower and semiconductor device having the circuit |
| 07/20/2006 | WO2006074974A1 Method and device for amplifying an amplitude- and phase-modulated electric signal |
| 07/20/2006 | WO2006053098B1 Method and apparatus for calibrating analog circuits using statistical techniques |
| 07/20/2006 | WO2005107062A3 Servo balancing among driver devices |
| 07/20/2006 | WO2005104351A3 Multi-band low noise amplifier system |
| 07/20/2006 | US20060161402 System and method for analyzing data streams |
| 07/20/2006 | US20060159198 Amplifier, information communication apparatus and amplification method |
| 07/20/2006 | US20060158257 Semiconductor circuit |
| 07/20/2006 | US20060158256 Amplifier circuit having an extended wilson current-mirror self-bias boosting circuit |
| 07/20/2006 | US20060158255 Adaptive predistortion for a transmit system with gain, phase and delay adjustments |
| 07/20/2006 | US20060158254 Efficient method and means for integration of power control and predistortion in a transmitter |
| 07/20/2006 | US20060158249 Linear amplifier and schmitt trigger using an analogue switch |
| 07/20/2006 | US20060158244 Circuits and methods for minimizing chopping artifacts at the output of a chopper-stabilized operational amplifier |
| 07/19/2006 | EP1681771A1 Efficient method and means for integration of power control and predistortion in a transmitter |
| 07/19/2006 | EP1681764A2 Variable transconductance variable gain amplifier utilizing a degenerated differential pair |
| 07/19/2006 | EP1680863A1 Efficient power supply for rapidily changing power requirements |
| 07/19/2006 | CN1806386A Ouput power detection circuit |
| 07/19/2006 | CN1806385A Low-noise amplifier |
| 07/19/2006 | CN1805273A Method for improving efficiency of power amplifier |
| 07/19/2006 | CN1805272A Circuit apparatus with different common mode I/O voltage |
| 07/19/2006 | CN1265549C Nonlinear distortion compensation power amplifier |
| 07/19/2006 | CN1265548C Operational amplifier device comprising static current control circuit |
| 07/18/2006 | US7079986 Greedy adaptive signature discrimination system and method |
| 07/18/2006 | US7079860 Semiconductor apparatus and communication apparatus |
| 07/18/2006 | US7079825 Direct conversion of low power high linearity receiver |
| 07/18/2006 | US7079819 RF transmitters with saturation detection and correction and methods therefor |
| 07/18/2006 | US7079818 Programmable mutlistage amplifier and radio applications thereof |
| 07/18/2006 | US7078976 High power Doherty amplifier |
| 07/18/2006 | US7078974 High frequency power amplifier circuit |
| 07/18/2006 | US7078970 CMOS class AB operational amplifier |
| 07/18/2006 | US7078968 Step gain-variable CMOS amplifier |
| 07/18/2006 | US7078967 Control of bias voltage |
| 07/18/2006 | US7078965 Servo balancing among driver devices |
| 07/13/2006 | WO2006073620A1 Multi-state load switched power amplifier for polar modulation transmitter |
| 07/13/2006 | WO2006072840A1 Current limiting amplifier |
| 07/13/2006 | WO2005050827A3 Amplifier linearization using non-linear predistortion |
| 07/13/2006 | US20060154622 Clipping of transmission signal |
| 07/13/2006 | US20060153315 Lower complexity layered modulation signal processor |
| 07/13/2006 | US20060152288 Method and system for amplifying a signal |
| 07/13/2006 | US20060152278 Apparatus for controlling modulation of an alternating waveform on a DC voltage signal within a low-noise block controller |
| 07/13/2006 | US20060152277 Pulse modulated power converter |
| 07/12/2006 | EP1679791A1 Systems, methods and devices for differential active biasing of a multi-stage amplifier |
| 07/12/2006 | EP1679790A1 Bias circuit |
| 07/12/2006 | EP1678822A2 Method for calibration of a signal receiver |
| 07/12/2006 | EP1678821A1 Multi-primary distributed active transformer amplifier power supply and control |
| 07/12/2006 | EP1678819A1 Method and apparatus for realizing a low noise amplifier |
| 07/12/2006 | EP1448890B1 High-frequency ignition for an internal combustion engine |
| 07/12/2006 | CN2796245Y Power amplication circuit for power output wave form capable of automatic tracking input audio frequency signal wave form |
| 07/12/2006 | CN1802829A Method and system for switching mode power amplification |
| 07/12/2006 | CN1802792A Digital differential amplification control device |
| 07/12/2006 | CN1802789A Glitch-free controllable RF power amplifier |
| 07/12/2006 | CN1802787A Output power control for a switching mode power amplifier |
| 07/12/2006 | CN1801606A 放大器和频率变换器 Amplifier and frequency converter |
| 07/12/2006 | CN1801603A Small-sized on-chip CMOS power amplifier having improved efficiency |
| 07/12/2006 | CN1801602A Integrated circuit devices having a control circuit for biasing an amplifier output stage and methods of operating the same |
| 07/12/2006 | CN1264285C Continuous closed-loop power control system and method including modulation injection in a wireless transceiver power amplifier |
| 07/12/2006 | CN1264274C Amplication systems and methods using fixed and modulated power supply voltages and buck-boost control |
| 07/11/2006 | US7076698 Vector monitor, related method of controlling a transmitter and transmitter employing the same |
| 07/11/2006 | US7076218 Control method and circuit for using a heterojunction bipolar transistor power amplifier in a zero intermediate frequency architecture transmitter |
| 07/11/2006 | US7076070 Monolithic class D amplifier |
| 07/11/2006 | US7076009 Low power CDMA receiver |
| 07/11/2006 | US7075374 Method and apparatus to provide wideband low noise amplification |
| 07/11/2006 | US7075373 Overcurrent protection circuit with fast current limiting control |
| 07/11/2006 | US7075372 Programmable automatic signal amplitude control circuit |