| 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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| 04/13/2011 | CN201797486U Power amplifier in multifunctional check gauge |
| 04/13/2011 | CN201797485U Control circuit of radio frequency matcher |
| 04/13/2011 | CN201797484U Feedforward power amplifier based on pilot frequency technology |
| 04/13/2011 | CN1601907B Pipelined and cyclic analog-to-digital converters |
| 04/13/2011 | CN102017553A Method and system for baseband predistortion linearization in multi-channel wideband communication systems |
| 04/13/2011 | CN102017401A Method and control circuit for controlling pulse width modulation |
| 04/13/2011 | CN102017400A Efficient linear LINC power amplifier |
| 04/13/2011 | CN102017399A Amplifier design with biasing and power control aspects |
| 04/13/2011 | CN102013877A Transconductance amplifier for reducing compensation capacitance |
| 04/13/2011 | CN102013874A An amplifier output amplitude detection circuit |
| 04/13/2011 | CN101442292B Radio-frequency amplifier digital bias circuit, method and communication equipment |
| 04/13/2011 | CN101360086B Signal processing method and system |
| 04/13/2011 | CN101340176B Apparatus for increasing turn rate of operational amplifier |
| 04/13/2011 | CN101233683B Data processing method, transmitter, device, network element and base station |
| 04/13/2011 | CN101032093B Signal configuration based transmitter adjustment in wireless communication devices |
| 04/12/2011 | US7924942 Power amplifier pre-distortion |
| 04/12/2011 | US7924088 Offset voltage calibration method and apparatus and amplifier thereof |
| 04/12/2011 | CA2414364C Transmitter including a composite amplifier |
| 04/07/2011 | WO2011039871A1 Bias generating circuit, power amplifier module, and semiconductor device |
| 04/07/2011 | WO2011039796A1 Power amplifier |
| 04/07/2011 | WO2011039792A1 Semiconductor device |
| 04/07/2011 | WO2011039063A1 Power supply arrangement for line termination units |
| 04/07/2011 | WO2011012473A4 Dual use transistor |
| 04/07/2011 | US20110080220 Temperature compensated integrator |
| 04/07/2011 | US20110080217 Audio amplifier |
| 04/07/2011 | US20110080216 Systems and Methods of Power Amplifier Digital Pre-Distortion |
| 04/07/2011 | DE102009003872B4 Schaltungsanordnung zum bistabilen Schalten mindestens eines Schaltkontaktes und dessen Verwendung in einem Gerät der Unterhaltungselektronik Circuit arrangement for bistable switching at least one switching contact and its use in an apparatus of entertainment electronics |
| 04/07/2011 | DE102006015983B4 Verstärkerschaltung und integrierte Schaltungsanordnung Amplifier circuit and integrated circuit |
| 04/06/2011 | EP2306640A1 Method and apparatus for power supplies with voltage tracking |
| 04/06/2011 | EP2306639A2 Amplifier circuit and communication device |
| 04/06/2011 | EP2306638A1 Envelope tracking amplifier arrangement |
| 04/06/2011 | EP2306637A1 Power supply method, apparatus, and system for a radio frequency power amplifier |
| 04/06/2011 | EP2304455A1 Digital amplifier with feedforward and feedback control |
| 04/06/2011 | EP1854207B1 Monolithically integrated power amplifier device |
| 04/06/2011 | CN1960166B High-bandwidth high-gain amplifier |
| 04/06/2011 | CN102007687A Amplitude control circuit, polar modulation transmission circuit and polar modulation method |
| 04/06/2011 | CN102006090A Transmission device and transmission method |
| 04/06/2011 | CN102006022A Low voltage operational amplifier based on CMOS (complementary metal oxide semiconductor) process |
| 04/06/2011 | CN102006018A Opening control circuit used for AB class audio amplifier |
| 04/06/2011 | CN102006013A Power series digital predistorter and distortion compensation control method therefor |
| 04/06/2011 | CN102006012A Nonlinear compensation amplifier for magnetic powder brake-clutches |
| 04/06/2011 | CN101552593B A driving circuit to drive an output stage |
| 04/06/2011 | CN101546988B Noise filter and noise-filter-incorporated amplifier circuit |
| 04/06/2011 | CN101420203B Low-noise amplifier circuit |
| 04/06/2011 | CN101330481B Predistortion model apparatus as well as apparatus, system and method for processing predistortion of signal |
| 04/06/2011 | CN101237221B Amplification apparatus |
| 04/06/2011 | CN101197556B Tunable narrowband low-noise amplifier adopting active inductive load |
| 04/05/2011 | US7920022 Switched capacitor system with and method for output glitch reduction |
| 04/05/2011 | US7919992 Charge recycling amplifier for a high dynamic range CMOS imager |
| 04/05/2011 | CA2556359C System and method for control of loop alignment in adaptive feed forward amplifiers |
| 03/31/2011 | WO2011037274A1 Doherty amplifier |
| 03/31/2011 | WO2011036331A1 Adjustable circuit architecture |
| 03/31/2011 | US20110075723 Thermal Feedback for Switch Mode Amplification |
| 03/31/2011 | US20110074506 Cancelling non-linear power amplifier induced distortion from a received signal by moving incorrectly estimated constellation points |
| 03/31/2011 | US20110074502 Multiple-input and multiple-output amplifier having pseudo-differential inputs |
| 03/30/2011 | EP2302851A1 Power supply arrangement for line termination units |
| 03/30/2011 | EP2302789A1 Power amplifier, power amplifier nonlinear distortion correction method, and wireless communication device |
| 03/30/2011 | EP2302788A1 Load management for improved envelope tracking performance |
| 03/30/2011 | EP2301146A1 Double-linc switched-mode transmitter |
| 03/30/2011 | EP1749342B1 Quadrature offset power amplifier |
| 03/30/2011 | EP1421678B1 Switching power supply for rf power amplifiers |
| 03/30/2011 | CN201781462U ALC (automatic level control) circuit |
| 03/30/2011 | CN201781461U High-gain class AB operational amplifier for quiescent current accuracy control |
| 03/30/2011 | CN201781459U Distortion-prevention class-D audio power amplifier |
| 03/30/2011 | CN101999207A Compensating for non-linear capacitance effects in a power amplifier |
| 03/30/2011 | CN101997495A Adaptive bias circuit and system thereof |
| 03/30/2011 | CN101997493A Amplifier circuit and light receiving amplifier circuit using the same |
| 03/30/2011 | CN101997492A Simplified fuzzy neural network reinforced Wiener model based power amplifier predistortion method |
| 03/30/2011 | CN101997491A Wireless apparatus and signal processing method |
| 03/30/2011 | CN101997490A Constant gain time amplifier adopting digital calibration technology |
| 03/30/2011 | CN101997489A Amplifier and implementation method thereof |
| 03/30/2011 | CN101997488A Vector modulator with high control resolution |
| 03/30/2011 | CN101997487A Electronic frequency dividing amplifier |
| 03/30/2011 | CN101478293B Temperature compensation power amplifier circuit |
| 03/30/2011 | CN101309075B Transconductor and mixing circuit |
| 03/29/2011 | US7915969 Distortion compensating circuit |
| 03/29/2011 | US7915960 Multi-primary distributed active transformer amplifier power supply and control |
| 03/29/2011 | US7915958 Amplifier |
| 03/29/2011 | US7915954 Amplifier predistortion and autocalibration method and apparatus |
| 03/29/2011 | US7915953 Amplifier circuit and method therefor |
| 03/24/2011 | WO2011034473A1 Method and arrangement in a mobile communications system |
| 03/24/2011 | WO2011034471A1 Method and arrangement in a mobile communication system |
| 03/24/2011 | WO2011033962A1 Microwave harmonic processing circuit |
| 03/24/2011 | US20110071796 Comparison of data signals using characteristic electronic thumbprints extracted therefrom |
| 03/24/2011 | US20110068868 Amplifier Device and Predistortion Control Method |
| 03/24/2011 | US20110068864 Self oscillating class D amplification device |
| 03/24/2011 | US20110068863 Area Efficient, Programmable-Gain Amplifier |
| 03/24/2011 | US20110068860 Detection circuit with improved anti-blooming circuit |
| 03/24/2011 | DE102010046112A1 DB-Linearer, Prozessunabhängiger Verstärker mit variabler Verstärkung DB-linear, process independent variable gain amplifier |
| 03/23/2011 | EP2299589A2 Audio processing apparatus and method |
| 03/23/2011 | EP2297861A1 Reduced power-consumption transmitters |
| 03/23/2011 | EP2297847A2 Rf power amplifiers with linearization |
| 03/23/2011 | EP1673859B1 Method and apparatus for resetting a buffer amplifier |
| 03/23/2011 | EP1652295B1 Temperature-insensitive bias circuit for high-power amplifiers |
| 03/23/2011 | CN201774501U S-band low-noise amplifier with high outside-band rejection |
| 03/23/2011 | CN201772927U Photoelectric detection pre-amplification circuit |
| 03/23/2011 | CN101990741A Improved control loop for amplification stage |
| 03/23/2011 | CN101990038A Method for improving efficiency of audio power amplifier and mobile phone using the same |
| 03/23/2011 | CN101989840A Operational amplifier capable of eliminating direct current voltage deviation |
| 03/23/2011 | CN101989838A Stabilizing network structure of monolithic integrated circuit of intelligent network processor double heterojunction bipolar transistor (InP DHBT) W wave band power amplifier |