| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 10/14/2009 | CN100550608C Power amplifier and pulse-width modulated amplifier |
| 10/14/2009 | CN100550607C Output power control for a switching mode power amplifier |
| 10/14/2009 | CN100550606C Circuit apparatus with different common mode I/O voltage |
| 10/14/2009 | CN100550107C Current feedback and compensation circuit, LED driving device and backlight system |
| 10/14/2009 | CN100548686C Fluid ejection and scanning system with photosensor activation of ejection elements |
| 10/14/2009 | CN100548685C Photosensor activation of an ejection element of a fluid ejection device |
| 10/14/2009 | CN100548684C Fluid ejection system and corresponding fluid ejection method |
| 10/13/2009 | US7602927 Guitar amplifier with channel-dedicated power switching |
| 10/13/2009 | US7602251 Arrangement for carrying out current-to-voltage conversion |
| 10/13/2009 | US7602249 Amplifier electronic circuit comprising a differential pair and a feedback system |
| 10/13/2009 | US7602248 Power amplifier and its idling current setting circuit |
| 10/13/2009 | US7602247 Variable gain amplifier and AC power supply device using the same |
| 10/13/2009 | US7602246 General-purpose wideband amplifier |
| 10/13/2009 | US7602245 Method, apparatus and system for reducing DC coupling capacitance at switching amplifier |
| 10/13/2009 | US7602241 Multiband Doherty amplifier |
| 10/13/2009 | US7601940 Gain control system for visible light communication systems |
| 10/13/2009 | US7601939 Solid-state image-pickup device with column-line amplifiers and limiter |
| 10/13/2009 | CA2411450C Composite amplifier |
| 10/08/2009 | WO2009123823A1 Transmitter chain timing and transmit power control |
| 10/08/2009 | WO2009123583A1 Tunable rf bandpass transconductance amplifier |
| 10/08/2009 | WO2009123568A1 High efficiency linear transmitter |
| 10/08/2009 | WO2009123566A1 High efficiency linear amplifier |
| 10/08/2009 | WO2009122103A2 System for converting charge into voltage and method for controlling this system |
| 10/08/2009 | US20090252504 Optical Receiver |
| 10/08/2009 | US20090251220 Radio-frequency power amplifier |
| 10/08/2009 | US20090251217 Amplifier design with biasing and power control aspects |
| 10/08/2009 | US20090251216 Common mode control circuitry for multi-stage operational amplifiers |
| 10/08/2009 | US20090251215 Amplifier output stage with extended operating range and reduced quiescent current |
| 10/08/2009 | US20090251214 Rail-to-rail operational amplifier |
| 10/08/2009 | US20090251213 Method for adjusting threshold voltage and circuit therefor |
| 10/08/2009 | US20090251212 Switching amplifier |
| 10/08/2009 | DE10297628B4 Treibeschaltung Drive circuit |
| 10/08/2009 | DE102008016428A1 Analogkomparator mit digitaler Offsetkompensation Analog to digital offset compensation |
| 10/07/2009 | EP2107681A2 Prescaler circuit and buffer circuit |
| 10/07/2009 | EP2106677A1 Rf power amplifier stability network |
| 10/07/2009 | EP2106648A2 Method and system for baseband predistortion linearization in multi-channel wideband communication systems |
| 10/07/2009 | EP1719243B1 Radio frequency low noise amplifier with automatic gain control |
| 10/07/2009 | EP1653607B1 Circuit for varying gain of preamplifier |
| 10/07/2009 | EP1312161B1 Rf signal amplifier unit, rf signal transmission device and rf signal transmitting terminal-antenna |
| 10/07/2009 | CN201323555Y Signal preamplifier circuit |
| 10/07/2009 | CN201323554Y Gain auxiliary amplifying circuit |
| 10/07/2009 | CN201323553Y Novel pulse width modulation amplifier |
| 10/07/2009 | CN201323552Y High-power IGBT (insulated gate bipolar transistor) drive power amplifying circuit |
| 10/07/2009 | CN101553983A Active distributed signal splitting apparatus |
| 10/07/2009 | CN101553723A High speed preamplifier circuit, detection electronics, and radiation detection systems therefrom |
| 10/07/2009 | CN101553166A Apparatus and method for obtaining EEG data |
| 10/07/2009 | CN101552644A DC interference suppressor circuit used for transimpedance preamplifier of infrared receiving system |
| 10/07/2009 | CN101552598A Grid driving circuit for switching power transistor |
| 10/07/2009 | CN101552594A High-fidelity power amplifying circuit in power supply regenerator |
| 10/07/2009 | CN101552551A Radio frequency ion power supply |
| 10/07/2009 | CN100547918C Impedance circuit of microphone preamplifier |
| 10/07/2009 | CN100547914C Differential amplifier and data driver for display |
| 10/07/2009 | CN100547913C Failsafe differential amplifier circuit and its method |
| 10/07/2009 | CN100547912C A power multiplier system and method |
| 10/07/2009 | CN100547911C Three state class D amplifier |
| 10/07/2009 | CN100547910C High efficiency power amplification apparatus with multiple power mode |
| 10/07/2009 | CN100547908C Distortion compensation circuit |
| 10/06/2009 | US7598987 Flicker detection gain control circuit, digital imaging system, and method |
| 10/06/2009 | US7598814 Method and apparatus for an LNA with high linearity and improved gain control |
| 10/06/2009 | US7598813 Radio frequency amplifier with constant gain setting |
| 10/06/2009 | US7598812 Shorted input detection for amplifier circuits |
| 10/06/2009 | US7598811 Current-controlled CMOS (C3MOS) fully differential integrated wideband amplifier/equalizer with adjustable gain and frequency response without additional power or loading |
| 10/06/2009 | US7598810 Power amplifier having input ends combined in series and output ends combined in series |
| 10/06/2009 | US7598809 RF power amplifier |
| 10/06/2009 | US7598807 Differential amplifier circuit, voltage regulator using the differential amplifier circuit, and method for controlling the differential amplifier circuit |
| 10/06/2009 | US7598805 Load insensitive balanced power amplifier and related operating method |
| 10/06/2009 | US7598510 Serial interface connecting circuit for supporting communications between different types of serial interfaces |
| 10/06/2009 | US7598479 Circuit for varying gain of preamplifier |
| 10/06/2009 | CA2208120C Differential audio line receiver |
| 10/01/2009 | WO2009120577A1 Rf transmitter and method of operation |
| 10/01/2009 | WO2009120496A1 Third order derivative distortion cancellation for ultra lower power applications |
| 10/01/2009 | WO2009119665A1 Power amplifiication device for satellite communication device |
| 10/01/2009 | WO2009118824A1 Low distortion amplifier and doherty amplifier using low distortion amplifier |
| 10/01/2009 | WO2009088886A3 Systems and methods for improved over-current clipping |
| 10/01/2009 | US20090245807 Optical power monitoring circuit, optical transceiver, optical module, optical receiver, amplifier circuit, and integrated circuit |
| 10/01/2009 | US20090245540 Amplification circuit and method therefor |
| 10/01/2009 | US20090245226 Communication System and Method for Improving Efficiency and Linearity |
| 10/01/2009 | US20090244056 Output amplifier circuit and data driver of display device using the same |
| 10/01/2009 | US20090243906 Differential comparator, and pipeline type a/d converter equipped with the same |
| 10/01/2009 | US20090243730 Converting circuit for converting differential signal to single-ended signal |
| 10/01/2009 | US20090243729 Controlling overload of a transimpedance amplifier in an optical transceiver |
| 10/01/2009 | US20090243728 Splitter circuit |
| 10/01/2009 | US20090243725 Semiconductor device |
| 10/01/2009 | US20090243724 Third Order Derivative Distortion Cancellation for Ultra Low Power Applications |
| 10/01/2009 | US20090243723 Differential and symmetrical current source |
| 10/01/2009 | US20090243722 Reduction of power consumption and EMI of a switching amplifier |
| 10/01/2009 | US20090243718 High-speed modulator driver circuit with enhanced drive capability |
| 10/01/2009 | US20090243717 Compact high-speed modulator driver method and apparatus |
| 10/01/2009 | US20090242741 Solid-state image capturing apparatus, manufacturing method for the solid-state image capturing apparatus, and electronic information device |
| 10/01/2009 | DE102009014492A1 Gegenstrom-Differenzverstärker Countercurrent differential amplifier |
| 09/30/2009 | EP2106021A1 Converting circuit for converting differential signal to single-ended signal |
| 09/30/2009 | EP2104980A2 Enhanced doherty amplifier with asymmetrical semiconductors |
| 09/30/2009 | EP2104979A2 Power amplifier |
| 09/30/2009 | EP1721386B1 Differential stage voltage offset trim circuitry |
| 09/30/2009 | EP1198880B1 Arrangement comprising a first and a second amplifier whereby a maximum of one of said amplifiers amplifies |
| 09/30/2009 | CN201319583Y Source follower, process structure thereof and common-mode level translational circuit |
| 09/30/2009 | CN201319582Y Radio frequency signal preamplifying circuit |
| 09/30/2009 | CN101546987A Opposite current differential amplifier |
| 09/30/2009 | CN101546986A Operational amplifier capable of improving turnover |
| 09/30/2009 | CN101546985A Amplifying element and manufacturing method thereof |