| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 04/22/2003 | US6552613 Output stage amplifier with compensation circuitry |
| 04/22/2003 | US6552612 Stepped gain amplifier with improved attenuation |
| 04/22/2003 | US6552611 Differential amplifier and filter circuit using the same |
| 04/22/2003 | US6552610 Transmission-line tuned switching power amplifier |
| 04/22/2003 | US6552609 Signal distortion compensating apparatus and method |
| 04/22/2003 | US6552607 Time division multiplexed PWM amplifier |
| 04/22/2003 | US6552606 Amplifier circuit having output filter capacitance current feedback |
| 04/22/2003 | US6552605 Differential transimpedance amplifier for optical communication |
| 04/22/2003 | US6552593 Active auto zero circuit for programmable time continuous open loop amplifiers |
| 04/22/2003 | US6552592 Differential input circuit for digital signal processing system |
| 04/22/2003 | US6552490 Multiple stage depressed collector (MSDC) klystron based amplifier for ground based satellite and terrestrial communications |
| 04/22/2003 | US6552324 Selectable pixel amplifier for use in a photosensor array |
| 04/17/2003 | WO2003032680A2 Transponder with a changeable circuit configuration |
| 04/17/2003 | WO2003032483A1 Class d switching audio amplifier |
| 04/17/2003 | WO2003032394A1 Optoelectronic sensor |
| 04/17/2003 | WO2002084778A3 Tunable phase shifter and applications for same |
| 04/17/2003 | US20030071803 Thin-film transistor circuit and a semiconductor display using the same |
| 04/17/2003 | US20030071731 Amplifier modulation |
| 04/17/2003 | US20030071687 Class AB amplifier circuit |
| 04/17/2003 | US20030071686 High voltage integrated circuit amplifier |
| 04/17/2003 | US20030071685 Circuit configuration with selectively operating amplifiers |
| 04/17/2003 | US20030071678 Current mirror and method for operating a current mirror |
| 04/17/2003 | US20030071677 Constant current circuit for controlling variation in output current duty caused by the input capacitance of a current mirror circuit |
| 04/17/2003 | US20030071673 System and method of translating wide common mode voltage ranges into narrow common mode voltage ranges |
| 04/17/2003 | US20030071603 Voltage-to-current conversion circuit and OTA using the same |
| 04/16/2003 | EP1303039A2 Method and device for reducing influence of early effect |
| 04/16/2003 | EP1301989A1 Composite amplifier |
| 04/16/2003 | EP1301988A1 Multistage doherty amplifier |
| 04/16/2003 | EP0870361B1 Efficient parallel-stage power amplifier |
| 04/16/2003 | EP0799524B1 Differential audio line receiver |
| 04/16/2003 | CN1411608A Power transistor module, power amplifier and fabrication method thereof |
| 04/16/2003 | CN1411140A Computing amplifier capable of operating under low voltage |
| 04/16/2003 | CN1411139A Metallic oxide semiconductor transistor amplifying circuit controlled by electric current |
| 04/16/2003 | CN1106067C Matching circuit and method for matching transistor circuit |
| 04/15/2003 | US6549077 Integrated inductor for RF transistor |
| 04/15/2003 | US6549076 High-output amplifier |
| 04/15/2003 | US6549074 Transconductance amplifier, filter using the transconductance amplifier and tuning circuitry for transconductance amplifier in the filter |
| 04/15/2003 | US6549073 Operational amplifier with common mode gain control using impedance transport |
| 04/15/2003 | US6549072 Operational amplifier having improved input offset performance |
| 04/15/2003 | US6549071 Power amplifier circuitry and method using an inductance coupled to power amplifier switching devices |
| 04/15/2003 | US6549070 High gain amplifier with current limited positive feedback |
| 04/15/2003 | US6549069 Self-timed switching for a digital power amplifier |
| 04/15/2003 | US6549056 Method and apparatus for providing a galvanically isolating circuit for the transfer of analog signals |
| 04/15/2003 | US6549054 DC offset cancellation circuit, differential amplification circuit with DC offset cancellation circuit, photo-electric pulse conversion circuit, pulse shaping circuit, and pulse generation circuit |
| 04/15/2003 | US6549053 Adjustable offset voltage circuit |
| 04/15/2003 | US6549044 Driving circuit for a voice coil motor and driving method thereof |
| 04/15/2003 | CA2320187C Microwave amplifier optimized for stable operation |
| 04/10/2003 | WO2003030373A1 Delta-sigma modulation apparatus and signal amplification apparatus |
| 04/10/2003 | WO2003030328A1 Power supply regulation and protection circuit for audio power amplifier |
| 04/10/2003 | WO2002069486A3 Stability enhanced multistage power amplifier |
| 04/10/2003 | WO2002052720A8 Circuit for low noise, fully differential amplification |
| 04/10/2003 | US20030067382 Transponder with a changeable circuit configuration |
| 04/10/2003 | US20030067352 Fully differential current feedback amplifier |
| 04/10/2003 | US20030067349 Class-D amplifier of BTL output type using filter coil and low-pass filter |
| 04/10/2003 | US20030067348 Class d switching audio amplifier |
| 04/10/2003 | US20030067345 Current steering circuit for amplifier |
| 04/09/2003 | EP1300942A2 Operational amplifier |
| 04/09/2003 | EP1299943A1 Self-configurable amplifier circuit |
| 04/09/2003 | EP1299942A1 Amplifier with output transformer |
| 04/09/2003 | EP1118211B1 Video amplifier with integrated dc level shifting |
| 04/09/2003 | CN1409894A Parallel amplifier architecture using digital phase control techniques |
| 04/09/2003 | CN1409893A Compensation circuit and method for power transistor |
| 04/09/2003 | CN1409892A 高频放大器 High-frequency amplifier |
| 04/09/2003 | CN1409873A Power transistor module, power amplifier and method in fabrication thereof |
| 04/09/2003 | CN1409484A Amplifier for alternating signal overlapped on continuous signals and its amplifying method |
| 04/09/2003 | CN1409479A Linear power converting circuit |
| 04/08/2003 | US6545919 Semiconductor memory and output signal control method and circuit in semiconductor memory |
| 04/08/2003 | US6545544 Efficient high overdrive transimpedance amplifiers |
| 04/08/2003 | US6545542 Power amplifier with coupler for cross-coupling amplifiers for reduction of differential frequency component |
| 04/08/2003 | US6545540 Current mirror-embedded low-pass filter for subscriber line interface circuit applications |
| 04/08/2003 | US6545539 Amplifier for use in a mobile phone |
| 04/08/2003 | US6545538 Rail-to-rail class AB output stage for operational amplifier with wide supply range |
| 04/08/2003 | US6545537 Automatic gain control circuit, and optical receiver using the same |
| 04/08/2003 | US6545536 Biasing circuit for VGS drift and thermal compensation of a power device |
| 04/08/2003 | US6545534 Low voltage variable gain amplifier with constant input impedance and adjustable one-pole filtering characteristic |
| 04/08/2003 | US6545533 Class D audio speaker amplifier circuit with pseudo noise modulation |
| 04/08/2003 | US6545502 High frequency MOS fixed and variable gain amplifiers |
| 04/03/2003 | WO2003028209A1 Transistor-based interface circuitry |
| 04/03/2003 | WO2003028208A1 Automatic ldmos biasing with long term hot carrier compensation |
| 04/03/2003 | WO2003028207A1 Temperature-stabilised amplifier circuit |
| 04/03/2003 | WO2002093735B1 Integrated circuit radio frequency amplifier with notch filter |
| 04/03/2003 | WO2002023634A9 Cmos transceiver having an integrated power amplifier |
| 04/03/2003 | US20030063427 Variable capacitor and a variable inductor |
| 04/03/2003 | US20030062971 Band switchable filter |
| 04/03/2003 | US20030062954 Method of operating a solid state power amplifying device |
| 04/03/2003 | US20030062953 Power supply regulation and protection circuit for audio power amplifier |
| 04/03/2003 | US20030062952 Electrical circuits |
| 04/03/2003 | US20030062951 Variable gain mixer/amplifier with fixed DC operating voltage level |
| 04/03/2003 | US20030062883 Constant voltage circuit and infrared remote control receiver using the same |
| 04/03/2003 | US20030062537 Field-effect type semiconductor device for power amplifier |
| 04/03/2003 | DE20300561U1 Switching arrangement for linear power amplifier |
| 04/02/2003 | EP1298794A2 Pop sound reduction circuit and voice output amplification device |
| 04/02/2003 | EP1298793A1 High-frequency amplifier |
| 04/02/2003 | EP1297624A1 Dual bridge amplifier |
| 04/02/2003 | EP1297623A1 Voltage level translation circuits |
| 04/02/2003 | EP1297622A1 Low noise, low distortion, complementary if amplifier |
| 04/02/2003 | EP1297621A2 High-frequency amplifier circuit with negative impedance cancellation |
| 04/02/2003 | EP1297620A2 Digital trimming of op amp offset voltage and quiescent current using non-volatile memory |
| 04/02/2003 | EP1297349A1 Amplifier circuit with offset compensation |
| 04/02/2003 | EP1195005B1 Device and method for predistorting a transmission signal to be transmitted via a nonlinear transmission path |