| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 04/15/2009 | CN101409572A Module for matching single or multi-system signal |
| 04/15/2009 | CN101409550A Control circuit and method for output voltage turning rate |
| 04/15/2009 | CN101409538A High-pass filter |
| 04/15/2009 | CN101409534A Differential amplifier with single ended output |
| 04/15/2009 | CN101409533A 跨导器 Transconductor |
| 04/15/2009 | CN101409532A Mixed output stage circuit and correlation method |
| 04/15/2009 | CN101409531A Pre-amplification circuit for radiofrequency signal |
| 04/15/2009 | CN100479326C Differential amplifier and data driver employing the differential amplifier |
| 04/15/2009 | CN100479017C Organic el driver circuit and organic el display device |
| 04/14/2009 | US7518454 Operational amplifier selecting one of inputs, and an amplifying apparatus using the OP amplifier the verification method |
| 04/14/2009 | US7518453 Current sense amplifier for voltage converter |
| 04/14/2009 | US7518452 Voltage-controlled current source and variable-gain amplifier |
| 04/14/2009 | US7518451 High efficiency switch-mode power amplifier |
| 04/14/2009 | US7518450 Digital amplifier |
| 04/14/2009 | US7518448 Amplifier mode switch |
| 04/14/2009 | US7518445 Systems, methods, and apparatuses for linear envelope elimination and restoration transmitters |
| 04/14/2009 | US7518444 PWM feedback/feed-forward protection |
| 04/14/2009 | US7518443 Amplifier circuit and method for reducing voltage and current noise |
| 04/14/2009 | US7518442 Circuit and method for suppressing switching and supply-related errors in a PWM power stage by instantaneous per-pulse feedback |
| 04/14/2009 | US7518441 Signal processor for use with a power amplifier in a wireless circuit |
| 04/14/2009 | US7518095 Method and apparatus for providing non-linear, passive quenching of avalanche currents in Geiger-mode avalanche photodiodes |
| 04/14/2009 | US7518094 Compensation of nonuniformity among multiple sensing diodes in a multiple sensor device |
| 04/14/2009 | US7517236 Thin film transistor circuit and display utilizing the same |
| 04/09/2009 | WO2009044353A2 A distributed low noise amplifier |
| 04/09/2009 | WO2009043970A1 Signal predistortion in radio transmitter |
| 04/09/2009 | WO2008042709A3 Enhanced doherty amplifier with asymmetrical semiconductors |
| 04/09/2009 | US20090092267 Switching audio power amplifier with de-noise function |
| 04/09/2009 | US20090091393 Dual-path current amplifier |
| 04/09/2009 | US20090091390 Programmable-gain amplifier systems to facilitate low-noise, low-distortion volume control |
| 04/09/2009 | US20090091389 Lvds receiver circuit |
| 04/09/2009 | US20090091388 Apparatus for slew rate enhancement of an operational amplifier |
| 04/09/2009 | US20090091386 Differential amplifier |
| 04/09/2009 | US20090091385 Differential amplifier circuit |
| 04/09/2009 | US20090091382 Audio signal processing system and method |
| 04/09/2009 | US20090091379 Active rectifier |
| 04/09/2009 | US20090090847 Optical semiconductor device and infrared data communication apparatus |
| 04/09/2009 | DE19702007B4 Hochfrequenz-Leistungsgenerator High-frequency power generator |
| 04/09/2009 | DE102007044942A1 Amplifier device has signal amplifier, constant component amplifier for change of constant component of signal amplifier and reference circuit for production of reference signal |
| 04/09/2009 | DE10135113B4 Pseudo-differentieller Leistungstreiber zur Verstärkung eines differentiellen Eingangsstroms Pseudo-differential output driver for amplifying a differential input current |
| 04/08/2009 | EP2045915A1 Low noise amplifier and mixer front-end circuit and method for gain control |
| 04/08/2009 | EP2045914A1 Polar-modulation transmission device |
| 04/08/2009 | EP2045913A1 Low noise amplifier and N-mode gain control circuit therefor |
| 04/08/2009 | EP2044688A1 Methods and apparatuses for providing input voltages to power amplifiers |
| 04/08/2009 | EP2044687A1 A method for controlling a linear amplifier and power amplifier arrangement |
| 04/08/2009 | EP1961115B1 Electronic circuit with compensation of intrinsic offset of differential pairs |
| 04/08/2009 | EP1588347B1 Circuit and method for providing an auto-off and/or auto-on capability for an audio device |
| 04/08/2009 | EP1325556B1 High frequency amplification circuit |
| 04/08/2009 | CN201219249Y Aviation data chain high-power broad band linear power amplifier |
| 04/08/2009 | CN101405935A Differential amplifier with input stage inverting common-mode signals |
| 04/08/2009 | CN101404484A Semiconductor circuit |
| 04/08/2009 | CN101404483A Differential amplifier |
| 04/08/2009 | CN101404482A 放大器 Amplifier |
| 04/08/2009 | CN101404481A Semiconductor circuit |
| 04/08/2009 | CN101404480A Single slice integrated anti-sound break class D audio power amplifier |
| 04/08/2009 | CN101404478A Method and apparatus for improving efficiency of class E power amplifier |
| 04/08/2009 | CN100477812C Conversion equipment equipped with polarity reverse device |
| 04/08/2009 | CN100477544C Device and method for frequency conversion |
| 04/08/2009 | CN100477509C Radio communication frequency signal amplifier and transmitting/receiving device |
| 04/08/2009 | CN100477508C Differential amplifier, data driver and display |
| 04/08/2009 | CN100477507C Amplifier circuit |
| 04/08/2009 | CN100477506C Circuit for class D amplifier |
| 04/08/2009 | CN100477505C Class D power amplifier of filtering free circuit |
| 04/08/2009 | CN100477504C High-frequency amplifier |
| 04/08/2009 | CN100477503C Photo-amplifier circuit, light receiver and method for generating electric signal |
| 04/08/2009 | CN100477502C Protection circuit of digital amplifier |
| 04/08/2009 | CN100477501C Semiconductor integrated circuit device |
| 04/08/2009 | CN100477499C Power amplifier with bias voltage control |
| 04/08/2009 | CN100477497C A doherty amplifier and signal processing method thereof |
| 04/08/2009 | CN100477494C High power Doherty amplifier |
| 04/08/2009 | CN100477492C Electronic device with sound output device |
| 04/08/2009 | CN100476679C Precision chopper-stabilized current mirror |
| 04/08/2009 | CN100476678C Constant voltage generating circuit |
| 04/07/2009 | US7515885 Communications signal amplifiers having independent power control and amplitude modulation |
| 04/07/2009 | US7515725 Electronic battery-powered hearing instrument, and method for operating such a hearing instrument |
| 04/07/2009 | US7515072 Method and apparatus for converting PCM to PWM |
| 04/07/2009 | US7514999 Voltage-to-current converter |
| 04/07/2009 | US7514998 Wide-temperature integrated operational amplifier |
| 04/07/2009 | US7514997 Common mode regulation for thermal tail compensation |
| 04/07/2009 | US7514995 Standby and concurring system of a power amplifier and method for power amplifying |
| 04/07/2009 | US7514994 Amplifier with high output power dynamic |
| 04/07/2009 | US7514908 Switching power supply device and a semiconductor integrated circuit |
| 04/07/2009 | US7514666 Composite receiver assembly having a circuit board on which multiple receiver devices that operate on different sets of wavelengths are mounted |
| 04/07/2009 | US7514665 Differential amplifier circuit with rectifier for optical pick-up device |
| 04/02/2009 | WO2009042666A1 Load inductor sharing |
| 04/02/2009 | WO2009042474A2 Reduced voltage differential receiver |
| 04/02/2009 | WO2009042417A1 Offset cancellation in a capacitively coupled amplifier |
| 04/02/2009 | WO2009041097A1 Power amplifier circuit, and transmitter and wireless communication device using the same |
| 04/02/2009 | WO2009041096A1 Power amplifying circuit, and transmitter and wireless communication device using the same |
| 04/02/2009 | WO2009041094A1 Amplifying device |
| 04/02/2009 | WO2009039738A1 A method, device and base station system for base station compatible with high gain tower mounted amplifier |
| 04/02/2009 | WO2009020325A3 Broadband power amplifier |
| 04/02/2009 | WO2007014036A3 Switch mode power amplifier using fet with field plate extension |
| 04/02/2009 | WO2005084371A3 Programmable gain amplifier with hybrid digital/analog architecture |
| 04/02/2009 | US20090088095 Amplifier, radio transmitting apparatus, and radio receiving apparatus |
| 04/02/2009 | US20090086857 Reduced voltage subLVDS receiver |
| 04/02/2009 | US20090085788 Multi-input operational amplifier circuit, digital/analog converter using same, and driver for display device using same |
| 04/02/2009 | US20090085671 Load inductor sharing |
| 04/02/2009 | US20090085669 Method and apparatus to enhance linearity and efficiency in an RF power amplifier |
| 04/02/2009 | US20090085668 Inductor Sharing in Radio Frequency Communications |
| 04/02/2009 | US20090085667 Inverted doherty amplifier with increased off-state impedence |