| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 01/21/2004 | EP1382141A1 Power division multiplexing with incoherent signals and fixed power hierarchy |
| 01/21/2004 | EP1382113A1 Amplifier |
| 01/21/2004 | EP1382083A1 Tunable multiplexer |
| 01/21/2004 | EP0919082B1 A differential amplifier, an integrated circuit, and a telephone |
| 01/21/2004 | EP0729670B1 A bidirectional amplifier |
| 01/21/2004 | CN1470102A Power control and modulation of switched-mode power amplifiers with one or more stages |
| 01/21/2004 | CN1470101A Variable bias control for switch mode RF amplifier |
| 01/21/2004 | CN1469544A Bias controlling circuit and signal processing apparatus |
| 01/21/2004 | CN1135728C Equalizing method and equipment for electric distorted signals due to interference of optical domain |
| 01/21/2004 | CN1135715C Transmitting circuit and method for suppressing unneeded radiation wave |
| 01/21/2004 | CN1135714C Radio power synthesizer |
| 01/21/2004 | CN1135689C Microwave amplifier |
| 01/21/2004 | CN1135688C Equipment and method for long-distance communication |
| 01/20/2004 | US6681080 Wake-up circuit for an electronic apparatus |
| 01/20/2004 | US6680652 Load switching for transmissions with different peak-to-average power ratios |
| 01/20/2004 | US6680651 Current mirror and differential amplifier for providing large current ratio and high output impedence |
| 01/20/2004 | US6680650 MOSFET well biasing scheme that migrates body effect |
| 01/20/2004 | US6680647 Low noise amplifier circuit with phase matched switch topology |
| 01/20/2004 | US6680627 Balanced transconductor and electronic device |
| 01/20/2004 | US6680533 Semiconductor device with suppressed RF interference |
| 01/15/2004 | WO2004006429A1 Semiconductor integrated circuit and semiconductor integrated circuit manufacturing method |
| 01/15/2004 | WO2004006427A2 Wide dynamic range operational amplifier |
| 01/15/2004 | WO2003081639A3 On-chip ac coupled circuit |
| 01/15/2004 | WO2003003568A3 Active auto zero circuit for programmable time continuous open loop amplifiers |
| 01/15/2004 | WO2002101917A3 Low-power, differential optical receiver in silicon on insulator |
| 01/15/2004 | WO2002097974A3 Active auto zero circuit for time continuous open loop amplifiers |
| 01/15/2004 | WO2002089319A3 Apparatus and method for tuning an inter-stage matching network of an integrated multistage amplifier |
| 01/15/2004 | WO2002054595A9 Input stage with selectable input impedance |
| 01/15/2004 | US20040010389 Physical quantity detection equipment |
| 01/15/2004 | US20040010384 System and method for measuring essential power amplification functions |
| 01/15/2004 | US20040010331 Audio signal processing device |
| 01/15/2004 | US20040008852 Level adjustment apparatus |
| 01/15/2004 | US20040008086 Amplifier gain boost circuitry and method |
| 01/15/2004 | US20040008085 Driver circuits and methods |
| 01/15/2004 | US20040008084 Wide dynamic range operational amplifier |
| 01/15/2004 | US20040008082 Power amplifier with load switching circuit |
| 01/15/2004 | US20040008058 Impedance comparison integrator circuit |
| 01/15/2004 | US20040008017 Low voltage large swing/high linearity analog buffer with servo amplifier and feedback loop |
| 01/15/2004 | US20040007714 Current mirror circuit and optical signal circuit using same |
| 01/15/2004 | DE4498744B4 Vorrichtung und Verfahren zum Frequenzkompensieren eines Operationsverstärkers Apparatus and method for frequency compensating an operational amplifier |
| 01/15/2004 | DE19810620B4 Breitbanddämpfungseinrichtung zur frequenzkompensierten Dämpfung von Hochfrequenzsignalen eines Frequenzbandes Wide-band attenuation means for frequency-compensated attenuation of high frequency signals of a frequency band |
| 01/15/2004 | DE19637292B4 Verstärkerschaltung, insbesondere zur Verstärkung von Audiosignalen und Audioverstärker Amplifier circuit, in particular for amplifying audio signals and audio amplifier |
| 01/15/2004 | DE10230011A1 Schaltung zur kapazitiven Änderung eines optoelektronischen Sperrschichtelementes mittels optischer Strahlung Circuit for capacitive change an optoelectronic barrier means using optical radiation |
| 01/15/2004 | DE10227622A1 Sensorschaltung Sensor circuit |
| 01/15/2004 | DE10227619A1 Sensorschaltung Sensor circuit |
| 01/15/2004 | DE10224747A1 Sensorschaltung und Verfahren zur Herstellung derselben Sensor circuit and method for manufacturing the same |
| 01/14/2004 | EP1381155A2 A power amplifier distortion compensation apparatus and method thereof |
| 01/14/2004 | EP1380106A1 Tunable matching circuit |
| 01/14/2004 | EP1380102A1 High duty cycle offset compensation for operational amplifiers |
| 01/14/2004 | EP1380101A2 A switched-capacitor, common-mode feedback circuit for a differential amplifier without tail current |
| 01/14/2004 | EP1380100A2 Self-boosting circuit for a power amplifier |
| 01/14/2004 | EP1379929A1 Amplifier system with on-demand power supply boost |
| 01/14/2004 | CN1468475A Electric field intensity detecting circuit and limiter amplifier |
| 01/14/2004 | CN1468464A Configurable power amplifier and bias control |
| 01/14/2004 | CN1467906A Exchanging type power supply system having power loss detecting function |
| 01/14/2004 | CN1134913C Light receiving amplifying device |
| 01/14/2004 | CN1134912C Starting circuit for electronic apparatus |
| 01/14/2004 | CN1134901C High-frequency amplifier, transmitting device, receiving device and method for controlling amplifier status |
| 01/14/2004 | CN1134898C Transmission final stage for mobile telephone |
| 01/14/2004 | CN1134887C Method and system for placing digital converter in hybrid matrix amplifier |
| 01/14/2004 | CN1134886C Combined linear power amplifying device and method |
| 01/14/2004 | CN1134843C Planar dielectric integrated circuit |
| 01/13/2004 | US6678513 Non-linear transistor circuits with thermal stability |
| 01/13/2004 | US6678013 Intermediate frequency circuit of digital television tuner having flat transmission characteristic in intermediate frequency band |
| 01/13/2004 | US6677897 Solid state transmitter circuit |
| 01/13/2004 | US6677822 Transconductor and filter circuit using the same |
| 01/13/2004 | US6677820 Distortion compensation apparatus |
| 01/13/2004 | US6677818 Method and circuit for a dual supply amplifier |
| 01/13/2004 | US6677817 Feed forward amplifier with amplifier stage failure detection using pilot tones |
| 01/08/2004 | WO2004004307A2 Even order distortion elimination in push-pull or differential amplifiers and circuits |
| 01/08/2004 | WO2004004116A1 Blind linearization using cross-modulation |
| 01/08/2004 | WO2004004115A2 Circuitry and method to provide a high speed comparator for an input stage of a low-voltage differential signal receiver circuit |
| 01/08/2004 | WO2004004114A2 System and method for protecting an audio amplifier output stage power transistor |
| 01/08/2004 | WO2004003481A1 Photodetection system and circuit for amlification |
| 01/08/2004 | WO2003034388A3 Circuit for predictive control of boost current in a passive matrix oled display and method therefor |
| 01/08/2004 | WO2002031967A3 Distributed circular geometry power amplifier architecture |
| 01/08/2004 | WO2002023717A3 Linear buffer |
| 01/08/2004 | US20040004800 Eeprom circuit voltage reference circuit and method for providing a low temperature-coefficient voltage reference |
| 01/08/2004 | US20040004647 Drive circuit, printhead and printing apparatus |
| 01/08/2004 | US20040004590 Method and system for adjusting precharge for consistent exposure voltage |
| 01/08/2004 | US20040004519 Broadband amplification apparatus for bandwidth expansion |
| 01/08/2004 | US20040004518 Radio-frequency amplifier |
| 01/08/2004 | US20040004517 Electronic circuit for a switching power amplifier and method for switching the output stage of a switching power amplifier |
| 01/08/2004 | US20040004516 Power amplifier distortion compensation apparatus and method thereof |
| 01/08/2004 | US20040004507 Offset control circuit |
| 01/08/2004 | DE19946459B4 Rauscharme breitbandige Verstärkereinrichtung sowie Verwendung der Verstärkereinrichtung Low-noise broadband amplifier device and use the amplifier device |
| 01/08/2004 | CA2490940A1 Even order distortion elimination in push-pull or differential amplifiers and circuits |
| 01/07/2004 | WO2004055977A2 Phase corrected miller compensation of chopper and nested chopper amplifiers |
| 01/07/2004 | EP1378992A2 Spannungsverfolger |
| 01/07/2004 | EP1378991A1 Voltage buffer for large gate loads with rail-to-rail operation and preferable use in LDO'S |
| 01/07/2004 | EP1378814A2 Output circuit device for clock signal distribution |
| 01/07/2004 | EP1377994A1 Tunable ferro-electric filter |
| 01/07/2004 | EP1377839A1 Low-loss tunable ferro-electric device and method of characterization |
| 01/07/2004 | CN2598256Y Transistor impedance transformer |
| 01/07/2004 | CN1466266A Digital power amplifier with digital negative feedback |
| 01/07/2004 | CN1134196C Cell powered mobile phone with, radio frequency power amplifier for radio communication system |
| 01/07/2004 | CN1134192C Switchover type buffer loop for frequency characteristic |
| 01/07/2004 | CN1134154C Receiver with internal low-noise high-frequency amplifier |
| 01/07/2004 | CN1134103C Stably current-biased efficient class-A open-loop constant-current transistor amplifier |
| 01/06/2004 | US6674337 Concurrent multi-band low noise amplifier architecture |