| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/18/2006 | US20060103472 Light receiving amplification circuit |
| 05/18/2006 | US20060103471 Preamplifier |
| 05/18/2006 | US20060103470 Power amplifier module |
| 05/18/2006 | US20060103469 Filter circuit providing low distortion and enhanced flexibility to obtain variable gain amplification |
| 05/18/2006 | US20060103468 Single-ended input to differential output low noise amplifier with a cascode topology |
| 05/18/2006 | US20060103466 High efficiency doherty amplifier with a segmented main amplifier |
| 05/18/2006 | US20060103465 Automatic gain control and tuned low noise amplifier for process-independent gain systems |
| 05/18/2006 | US20060103464 Differential amplifier circuit capable of reducing current consumption |
| 05/18/2006 | US20060103463 Programmable gain current amplifier |
| 05/18/2006 | US20060103461 System, method and apparatus for providing ground separation between different environments |
| 05/18/2006 | US20060103460 System and Method for Envelope Modulation |
| 05/18/2006 | US20060103459 Pulse Amplitude Modulation (PAM) method and circuit for improving the performance of a D-class audio amplifier |
| 05/18/2006 | US20060103458 On-the-fly introduction of inter-channel delay in a pulse-width-modulation amplifier |
| 05/18/2006 | DE102005054400A1 Pulse-width modulation (PWM) power amplifier, e.g. for compact disc (CD) playback appliance, etc. for radio signal transmission to loudspeaker after amplifying, containing audio signal power amplifier |
| 05/17/2006 | EP1657815A1 Frequency stabilization technique for self oscillating modulator |
| 05/17/2006 | EP1656753A1 Transimpedance amplifier with receive signal strength indicator |
| 05/17/2006 | EP1656733A1 Integrated power amplifier circuit |
| 05/17/2006 | EP1563601A4 Estimating the operating point on a nonlinear traveling wave tube amplifier |
| 05/17/2006 | EP1520396A4 Even order distortion elimination in push-pull or differential amplifiers and circuits |
| 05/17/2006 | EP1382113A4 Amplifier |
| 05/17/2006 | CN1774858A Dual band power amplifier with improved isolation |
| 05/17/2006 | CN1774857A Efficient modulation of RF signals |
| 05/17/2006 | CN1256805C Reflection loss suppression circuit |
| 05/17/2006 | CN1256804C Voltage amplifying circuit |
| 05/17/2006 | CN1256738C High-frequency power amplifier |
| 05/16/2006 | US7046974 Radio frequency circuit and communication system with power amplifier control |
| 05/16/2006 | US7046957 Reflecting modulator circuit comprising a negative impedance amplifier |
| 05/16/2006 | US7046814 Impedance adapter preamplifier device for electronic tube audio frequencies able to be inserted on line on the path of the low frequency signal |
| 05/16/2006 | US7046727 Method and apparatus for self-oscillating differential feedback class-D amplifier |
| 05/16/2006 | US7046567 Sense amplifying circuit and bit comparator with the sense amplifying circuit |
| 05/16/2006 | US7046101 Switchable RF power divider/combiner with switchable impedance matching elements |
| 05/16/2006 | US7046092 Amplifier circuit having signal detection function |
| 05/16/2006 | US7046091 Power amplifier |
| 05/16/2006 | US7046090 Method and apparatus for dynamically regulating the supply voltage of a power amplifier |
| 05/16/2006 | US7046089 Variable gain amplifier |
| 05/16/2006 | US7046088 Power amplifier |
| 05/16/2006 | US7046086 FET band amplifier |
| 05/16/2006 | US7046085 Power amplifier and radio communication device using the amplifier |
| 05/16/2006 | US7046084 Power amplifier and radio communication device using the amplifier |
| 05/16/2006 | US7046082 Electronic device having sound output module |
| 05/16/2006 | US7046080 Signal processing circuit |
| 05/16/2006 | US7046077 Current source circuit and amplifier using the same |
| 05/16/2006 | US7046045 SOI sense amplifier with cross-coupled bit line structure |
| 05/16/2006 | US7046044 Differential preamplifier having balanced resistor network |
| 05/16/2006 | US7046040 Bootstrap driver |
| 05/16/2006 | US7045762 Photocurrent-to-voltage conversion apparatus including non-diode-connected clamping MOS transistor |
| 05/16/2006 | US7045412 Field-effect type semiconductor device for power amplifier |
| 05/11/2006 | WO2006049462A1 Constant current darlington circuits for high power |
| 05/11/2006 | WO2006049154A1 Digital amplifier |
| 05/11/2006 | WO2006039510A9 Continuous-time digital amplifier |
| 05/11/2006 | WO2005114834A8 Amplifier circuit with automatic gain correction |
| 05/11/2006 | WO2005027297A8 Hybrid switched mode/linear power amplifier power supply for use in polar transmitter |
| 05/11/2006 | WO2005008904A3 Variable attenuation system having continuous input steering |
| 05/11/2006 | US20060099751 Semiconductor integrated circuit and semiconductor integrated circuit manufacturing method |
| 05/11/2006 | US20060098032 Amplifier circuit, driving circuit of display apparatus, portable telephone and portable electronic apparatus |
| 05/11/2006 | US20060097790 On-chip temperature compensation circuit for an electronic device |
| 05/11/2006 | US20060097788 Transconductance amplifier having common mode feedback circuit and method of operating the transconductance amplifier |
| 05/11/2006 | US20060097787 Gain adjusting and circuit arrangement |
| 05/11/2006 | US20060097786 Low noise and high gain low noise amplifier |
| 05/11/2006 | US20060097785 BTL amplifier |
| 05/11/2006 | US20060097784 Amplifier apparatus |
| 05/11/2006 | US20060097783 Amplifier |
| 05/10/2006 | EP1655833A1 Class B amplifier with process variation independent deadband |
| 05/10/2006 | EP1654801A1 Integrated power amplifier circuit |
| 05/10/2006 | EP1654672A2 Device and method for signal processing |
| 05/10/2006 | CN2779724Y A motherboard/function card structure based AV power amplifier |
| 05/10/2006 | CN1771658A Linear amplifier |
| 05/10/2006 | CN1770625A Sub-ranging digital to analog converter for radiofrequency amplification |
| 05/10/2006 | CN1770624A Low noise audio amplifier |
| 05/10/2006 | CN1770623A Method for high efficiency audio amplifier |
| 05/10/2006 | CN1770621A Differential amplifier circuit capable of reducing current consumption |
| 05/10/2006 | CN1255942C Power amplifier with out-put power limitor |
| 05/10/2006 | CN1255940C Distributed amplifier having separately biased sections |
| 05/10/2006 | CN1255939C High-frequency semiconductor device |
| 05/10/2006 | CN1255937C A/D converter and its track feedback circuit and amplifying grade |
| 05/10/2006 | CN1255936C 功率放大器 PA |
| 05/09/2006 | US7043213 Multi-mode amplifier system |
| 05/09/2006 | US7043206 Fully integrated offset compensation feedback circuit |
| 05/09/2006 | US7042503 Image sensing apparatus, method and program for distance measurement |
| 05/09/2006 | US7042432 Thin-film transistor circuit and a semiconductor display using the same |
| 05/09/2006 | US7042384 Differential amplifier device, 2-stage amplifier device, and analog/digital converter device |
| 05/09/2006 | US7042317 High-frequency active inductor |
| 05/09/2006 | US7042295 Low-voltage, low-power transimpedance amplifier architecture |
| 05/09/2006 | US7042294 Power amplifier system |
| 05/09/2006 | US7042293 DC/DC converter using bipolar transistor, method of manufacturing the same and DC power supply module using the same |
| 05/09/2006 | US7042291 Balanced amplifier and filter using the same |
| 05/09/2006 | US7042290 Output stage circuit for an operational amplifier |
| 05/09/2006 | US7042289 Transconductance control circuit of rail-to-rail differential input stages |
| 05/09/2006 | US7042288 Charge amplifier for piezoelectric pressure sensor |
| 05/09/2006 | US7042287 System and method for reducing dynamic range and improving linearity in an amplication system |
| 05/09/2006 | US7042284 Operational amplifier arrangement |
| 05/09/2006 | US7042283 High-efficiency linear power amplifier |
| 05/09/2006 | US7042282 Power control and modulation of switched-mode power amplifiers with one or more stages |
| 05/09/2006 | US7042272 Transconductance amplifier with substantially constant resistance and mixer using same |
| 05/09/2006 | US7042256 Voice coil motor power amplifier |
| 05/09/2006 | US7042134 Transconductance circuit for piezoelectric transducer |
| 05/09/2006 | CA2233269C Predistortion circuit for an rf amplifier |
| 05/04/2006 | WO2006047473A2 A signal-enhancement system for photodetector outputs |
| 05/04/2006 | WO2006047294A1 Frequency tunable low noise amplifier |
| 05/04/2006 | WO2006046399A1 Amplitude variable driver circuit and testing apparatus |