| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 01/12/2011 | CN201705010U Electronic fence |
| 01/12/2011 | CN101944888A Variable gain low-noise driving amplifier |
| 01/12/2011 | CN101944887A Ended output type D-class amplifier of double-feedback differential circuit |
| 01/12/2011 | CN101944886A Adaptive micro-current amplifier |
| 01/12/2011 | CN101944884A Automatic compensating device and method for grid voltage of power amplification module |
| 01/12/2011 | CN101465622B D-genus audio power amplifier |
| 01/12/2011 | CN101453196B Amplifier circuit |
| 01/11/2011 | US7868703 Passive spectrum control for pulsed RF power amplifiers |
| 01/11/2011 | US7868702 Photoreceiver/amplifier circuit, optical pickup device, and optical disk device |
| 01/11/2011 | US7868701 Transimpedance amplifier |
| 01/11/2011 | US7868700 Method and apparatus for reducing current consumption of MIMO systems |
| 01/11/2011 | US7868699 Semiconductor integrated circuit device |
| 01/11/2011 | US7868698 Power amplifier with stabilising network |
| 01/11/2011 | US7868697 Converting circuit for converting differential signal to single-ended signal |
| 01/11/2011 | US7868695 Differential amplifier |
| 01/11/2011 | US7868693 Class-D amplifier |
| 01/11/2011 | US7868665 Integrated circuit and sensor for imaging |
| 01/11/2011 | US7868663 Receiver circuit for use in a semiconductor integrated circuit |
| 01/11/2011 | CA2485657C High frequency amplifier in an integrated circuit |
| 01/06/2011 | WO2011002942A1 Gain control linearity in an rf driver amplifier transmitter |
| 01/06/2011 | WO2011002099A1 Power consumption control circuit, amplifying circuit, and power consumption control method |
| 01/06/2011 | WO2011001769A1 High-frequency circuit for radio communication, and radio communication device |
| 01/06/2011 | WO2011001591A1 Class d amplification device |
| 01/06/2011 | WO2011001590A1 Transmission circuit |
| 01/06/2011 | WO2011001577A1 Transmitter provided with polar modulation circuit |
| 01/06/2011 | WO2011001576A1 Transmitting circuit and communication apparatus |
| 01/06/2011 | WO2011001575A1 Transmitting circuit and communication apparatus |
| 01/06/2011 | US20110001649 Differential chopper comparator and A/D converter including the same |
| 01/06/2011 | US20110001648 Folding circuit and analog-to-digital converter |
| 01/06/2011 | US20110001566 Radio frequency power amplifier |
| 01/06/2011 | US20110001565 High-speed, multi-stage class ab amplifiers |
| 01/06/2011 | US20110001562 High speed linear differential amplifier |
| 01/06/2011 | US20110001561 Semiconductor differential amplifier |
| 01/06/2011 | US20110001560 Amplifiers with Input Offset Trim and Methods |
| 01/05/2011 | EP2270984A1 Improved radio frequency digital-to analog converter |
| 01/05/2011 | EP2270979A1 Preamplifier circuit for a microelectromechanical capacitive acoustic transducer |
| 01/05/2011 | EP2270978A1 Charge to voltage conversion system and control method thereof |
| 01/05/2011 | EP2270977A1 Method and device for controlling a common-mode voltage of a system with switched capacities, in particular an analogue-to-digital converter |
| 01/05/2011 | EP2270976A1 Optimising operating temperature in a power amplifier |
| 01/05/2011 | EP2269302A1 Method and control circuit for controlling pulse width modulation |
| 01/05/2011 | EP2041874B1 Method for processing sensor signals subject to an offset and sensor arrangement designed to carry out the method |
| 01/05/2011 | EP1756690B1 Precision chopper-stabilized current mirror |
| 01/05/2011 | CN201699658U Voltage amplifying circuit of steam flowmeter |
| 01/05/2011 | CN201699657U Voltage amplifier circuit of steam flowmeter |
| 01/05/2011 | CN201699656U Stereo digital audio power amplifier |
| 01/05/2011 | CN201699655U Power amplifying device and equipment of UHF digital television transmitter |
| 01/05/2011 | CN201698584U Integrated circuit using infrared code sending pipe for receiving infrared signals |
| 01/05/2011 | CN101939909A Class D power amplifier |
| 01/05/2011 | CN101939900A Envelope tracking power supply circuit and high-frequency amplifier including the same |
| 01/05/2011 | CN101938271A Circuit for conditioning micro-current/voltage conversion signal |
| 01/05/2011 | CN101938258A Method and device for controlling radio frequency power amplifier to transmit signal |
| 01/05/2011 | CN101938256A Fully integrated dual-band configurable radio-frequency power amplifier |
| 01/05/2011 | CN101938255A Low-power consumption true logarithmic amplifier |
| 01/04/2011 | US7863986 Techniques for improving balun loaded-Q |
| 01/04/2011 | US7863982 Driving circuit capable of enhancing response speed and related method |
| 01/04/2011 | US7863981 Rail-to-rail operational amplifier |
| 01/04/2011 | US7863979 High efficiency power amplifier having embedded switching |
| 01/04/2011 | US7863977 Fully differential non-inverted parallel amplifier for detecting biology electrical signal |
| 01/04/2011 | US7863879 AC signal producer and method thereof |
| 12/30/2010 | US20100330938 Power detector |
| 12/30/2010 | US20100329304 Circuit and method for beta variation compensation in single-transistor temperature sensor |
| 12/30/2010 | US20100329157 Even-Order Harmonics Calibration |
| 12/30/2010 | US20100328542 Low-Noise Amplifier Suitable for Use in a Television Receiver |
| 12/30/2010 | US20100327980 Heterojunction bipolar transistor and method for manufacturing the same, and power amplifier using the same |
| 12/30/2010 | US20100327979 Current Detection Apparatus and Control System Using the Same |
| 12/30/2010 | US20100327978 Temperature compensated self-bias darlington pair amplifier |
| 12/30/2010 | US20100327976 Integrated power amplifier with load inductor located under ic die |
| 12/30/2010 | US20100327975 Signal amplifier |
| 12/30/2010 | US20100327974 Operational amplifiers having low-power unconditionally-stable common-mode feedback |
| 12/30/2010 | US20100327973 Amplifier circuit comprising charge pump and low-pass filter |
| 12/30/2010 | US20100327972 Time Delay Compensation and Pulse Width Correction |
| 12/30/2010 | US20100327970 Transmission Line Distributed Oscillator |
| 12/30/2010 | US20100327969 Power amplifier having parallel amplification stages and associated impedance matching networks |
| 12/30/2010 | US20100327940 Embedded phase noise measurement system |
| 12/30/2010 | US20100327919 Differential amplifier circuit |
| 12/30/2010 | DE102005032093B4 Verstärkeranordnung Amplifier arrangement |
| 12/29/2010 | WO2010151889A2 Rf single-ended to differential converter |
| 12/29/2010 | WO2010151270A1 Even-order harmonics calibration |
| 12/29/2010 | WO2010150658A1 Amplifier circuit, integrating circuit, and light-detection device |
| 12/29/2010 | WO2010150657A1 Integrating circuit and light-detection device |
| 12/29/2010 | WO2010149055A1 Signal buffer amplifier |
| 12/29/2010 | EP2267886A1 Class E amplifier |
| 12/29/2010 | EP2266204A1 Differential rf amplifier |
| 12/29/2010 | EP2266203A1 Integrated circuitand corresponding method of processing a multitype radio frequency digital signal |
| 12/29/2010 | EP2266202A2 Combination offset voltage and bias current auto-zero circuit |
| 12/29/2010 | CN201690420U Multi-channel digital power amplifier |
| 12/29/2010 | CN201690419U Common mode feedback circuit |
| 12/29/2010 | CN201690418U Novel D-type power amplifier based on clock edge adjustment |
| 12/29/2010 | CN201690417U Class-D amplifier suitable for digital integration |
| 12/29/2010 | CN201690415U PA power amplification module of digital microwave remote system |
| 12/29/2010 | CN101933228A Lna having a post-distortion mode and a high-gain mode |
| 12/29/2010 | CN101933227A Differential amplifier with accurate input offset voltage |
| 12/29/2010 | CN101933226A Signal conditioner with suppression of interfering signals |
| 12/29/2010 | CN101933225A Radio frequency power delivery system |
| 12/29/2010 | CN101931750A Amplifier control device and recording non-transitory medium |
| 12/29/2010 | CN101931737A Black level compensation circuit |
| 12/29/2010 | CN101931376A Direct current isolated amplifier |
| 12/29/2010 | CN101931375A Amplifier circuit with high power supply rejection ratio |
| 12/29/2010 | CN101931374A Differential signal receiving circuit and display apparatus |
| 12/29/2010 | CN101931373A Output circuit using analog amplifier |