H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements

Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
10/2009
10/28/2009	CN100555844C RF amplifier circuit and operation method thereof
10/28/2009	CN100555843C Analog predistortion based linear power amplification circuit and method
10/27/2009	US7609555 Sensing circuit for flash memory device operating at low power supply voltage
10/27/2009	US7609116 Integrated amplifier arrangement
10/27/2009	US7609115 Input circuitry for transistor power amplifier and method for designing such circuitry
10/27/2009	US7609114 Voltage generating apparatus and methods
10/27/2009	US7609113 Constant current bias circuit and associated method
10/27/2009	US7609112 Boosted tail-current circuit
10/27/2009	US7609110 Filterless class-D speaker driver with less switching
10/27/2009	US7609109 Contactless IC card system
10/22/2009	WO2009128745A1 Bipolar current mirror
10/22/2009	WO2009128191A1 Amplitude control circuit, polar modulating transmission circuit and polar modulating method
10/22/2009	WO2009128130A1 Digital power amplifier
10/22/2009	WO2009127724A1 Differential rf amplifier
10/22/2009	US20090264145 Dynamic bias for rf power amplifiers
10/22/2009	US20090261908 Power supply providing ultrafast modulation of output voltage
10/22/2009	US20090261906 Amplifier for improving electrostatic discharge characteristic
10/22/2009	US20090261904 Multi-input operational amplifier and method for reducing input offset thereof
10/22/2009	US20090261903 Variable gain rf amplifier
10/22/2009	US20090261902 Asynchronous Error Correction Circuit for Switching Amplifier
10/22/2009	US20090261901 Decade bandwidth planar mmic four port transformer
10/22/2009	US20090261900 Apparatus for Coupling at Least One of a Plurality of Amplified Input Signals to an Output Terminal Using a Directional Coupler
10/22/2009	US20090261864 Current mode data sensing and propagation using voltage amplifier
10/22/2009	DE102008051630A1 Hochfrequenzleistungsverstärker High frequency power amplifier
10/22/2009	DE102008017678A1 Amplifier e.g. audio amplifier, has three-pole e.g. MOSFET, comprising high impedance control input whose potential determines potential of current output of three-pole, where current output is connected with screen grid
10/21/2009	EP2110954A2 Transmission switch, transmission method and use
10/21/2009	EP2110947A1 Variable gain RF amplifier
10/21/2009	EP2110946A1 Differential RF amplifier
10/21/2009	EP2109778A1 Amplification circuit having an integrated test circuit
10/21/2009	EP2020052B1 A device with shared power amplifiers, for use in a wireless telecommunications system
10/21/2009	EP2013967B1 Low power output stage
10/21/2009	CN201332386Y Signal amplifier circuit
10/21/2009	CN201332385Y Digital audio power amplifier and audio processing device
10/21/2009	CN101563843A Optical receiver
10/21/2009	CN101563842A True current limiting (TCL)
10/21/2009	CN101563841A Error correction system for a class-D power stage
10/21/2009	CN101563840A Power amplification device
10/21/2009	CN101562448A High-low power combining circuit for radio-frequency power amplifier
10/21/2009	CN101562430A Difference input signal receiving circuit
10/21/2009	CN101562429A Method and device for feeding DC power to an amplifier module for a pulsed load
10/21/2009	CN101562428A Signal modulation device and control method thereof
10/21/2009	CN101562427A Converting type symmetrical power amplifier
10/21/2009	CN101562426A Power amplification circuit
10/21/2009	CN101562425A High-low power combining circuit for radio-frequency power amplifier
10/21/2009	CN100553369C Speaker system, audio amplifier and audio system
10/21/2009	CN100553126C Controller of radio-frequency power generator for reducing sensitivity to cable length
10/21/2009	CN100553124C Operation amplifier
10/21/2009	CN100553123C Differential amplifier and calculation amplifier
10/21/2009	CN100553122C Multi-channel digital amplifier, signal processing method thereof, and audio reproducing system having the same
10/21/2009	CN100553121C Class D-amplifier
10/21/2009	CN100553120C Integrated power amplifier circuit and amplifying method
10/21/2009	CN100553119C Integrated power amplifier circuit and amplifying method
10/21/2009	CN100553118C Integrated power amplifier circuit and method
10/21/2009	CN100553117C Integrated power amplifier circuit and method
10/20/2009	US7605660 Linear multi-stage transimpedance amplifier
10/20/2009	US7605658 Resistively loaded single stage differential amplifier having zero volt common mode input
10/20/2009	US7605657 Multi-mode amplifier arrangement and method for controlling an amplifier arrangement
10/20/2009	US7605656 Operational amplifier with rail-to-rail common-mode input and output range
10/20/2009	US7605655 Highly linear differential amplifier with a novel resistive source degeneration network
10/20/2009	US7605654 Telescopic operational amplifier and reference buffer utilizing the same
10/20/2009	US7605653 Sigma-delta based class D audio power amplifier with high power efficiency
10/20/2009	US7605650 Switched capacitor amplifier with higher gain and improved closed-loop gain accuracy
10/20/2009	US7605615 Voltage comparator circuit
10/20/2009	CA2442400C Power division multiplexing with incoherent signals and fixed power hierarchy
10/15/2009	WO2009126930A2 Voltage level shifter
10/15/2009	WO2009126392A1 Amplifier design with biasing and power control aspects
10/15/2009	WO2009126386A1 Providing pre-distortion to an input signal
10/15/2009	WO2009126007A2 Method of power amplifier predistortion adaptation using compression detection and circuit thereof
10/15/2009	WO2009125555A1 High-frequency amplifier
10/15/2009	WO2009125323A1 Power amplifying unit and method for controlling a power amplifier unit
10/15/2009	US20090259418 Current-voltage conversion circuit and power consumption detection circuit and electronic device using the same
10/15/2009	US20090257294 Programmable linear receiver for digital data clock signals
10/15/2009	US20090256637 High-frequency power amplifier and communication device
10/15/2009	US20090256636 Amplifier Arrangement and Method for Signal Amplification
10/15/2009	US20090256635 Linear-in-db variable gain amplifier
10/15/2009	US20090256634 Output distortion cancellation circuit
10/15/2009	US20090256632 Method and apparatus for reducing frequency memory effects in rf power amplifiers
10/15/2009	US20090256060 Pixel array with global shutter
10/15/2009	DE19950714B4 Schaltung und Verfahren zum Kombinieren einer Vorspannung mit Signalen mit wahlweise variabler Signalverstärkung Circuit and method for combining a bias voltage signals with optional variable signal amplification
10/15/2009	DE10128772B4 Verfahren und Vorrichtung zur Einschaltstrombegrenzung in Gegentaktverstärkerendstufen Method and apparatus for limiting the push-pull amplifier output stages
10/14/2009	EP2109216A1 Amplifier arrangement and signal generation method
10/14/2009	EP2109215A1 Method and system for improving linearity and efficeny of a radio transmission system
10/14/2009	EP2109214A1 Amplifier arrangement and method for signal amplification
10/14/2009	EP2108219A1 Method and system for increasing sampling frequency for switching amplifiers
10/14/2009	EP2108218A1 Sampling frequency reduction for switching amplifiers
10/14/2009	EP1543618B1 Transistor circuit
10/14/2009	CN201327524Y High-voltage heavy-current amplifier circuit
10/14/2009	CN101558558A Automatic zero voltage switching mode controller
10/14/2009	CN101558557A Gate leakage insensitive current mirror circuit
10/14/2009	CN101557216A Comparator and D-class audio power amplifier comprising comparator
10/14/2009	CN101557203A Power amplifier with overcurrent protection
10/14/2009	CN101557202A High power D-type power amplifier
10/14/2009	CN101557201A Class M amplifier circuit
10/14/2009	CN101557200A Power amplifier capable of regulating noise
10/14/2009	CN101557199A Radio-frequency power amplifier
10/14/2009	CN101556482A Method for adjusting threshold voltage and circuit therefor
10/14/2009	CN101556480A Power control device used for mobile communication terminal
10/14/2009	CN101556169A Micro-current amplifier
10/14/2009	CN100550613C Difference input range-limiting amplifier
10/14/2009	CN100550609C Output circuit for amplifying and outputting the input signals

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