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)
11/2011
11/17/2011	US20110279184 Area efficient concurrent matching transceiver
11/17/2011	US20110279182 Circuit for Power Amplification of an Input Signal and Signal Emission System Incorporating Such a Circuit
11/17/2011	US20110279181 Common-mode feedback circuit
11/17/2011	US20110279178 Multi-band high-efficiency doherty amplifer
11/17/2011	US20110278437 Optical receiving circuit
11/17/2011	DE102005038442B4 Gegentaktverstärker mit transformatorischer Gegenkopplung Push-pull amplifier with transformer feedback
11/16/2011	EP2387150A2 Automatic bias control circuit for linear power amplifiers
11/16/2011	EP2387149A1 Over-current protection for a switch mode class D audio amplifier
11/16/2011	CN202043080U Broadband direct current amplification device
11/16/2011	CN202043079U A voice frequency halving preamplification circuit
11/16/2011	CN102246413A Multiport amplifier adjustment
11/16/2011	CN102246412A Amplifier with programmable off voltage
11/16/2011	CN102246411A Techniques for improving amplifier linearity
11/16/2011	CN102244501A CMFB (common mode feedback) circuit
11/16/2011	CN102244500A Method and device for controlling power supplying voltage of power consumption device in emitting passage and emitting system
11/16/2011	CN102244499A High-sensitivity front-end circuit of transimpedance amplifier (TIA)
11/16/2011	CN101667810B Chip of double-frequency radio-frequency power amplifier circuit
11/16/2011	CN101626231B AISG tower mounted amplifier RET terminal RS485 circuit
11/16/2011	CN101552594B High-fidelity power amplifying circuit in power supply regenerator
11/16/2011	CN101517891B Controlled power converter
11/16/2011	CN101510763B Millimeter-wave monolithic integrated power amplifier
11/16/2011	CN101425796B Digital pulse width modulation system and method capable of digit drop
11/16/2011	CN101394153B Class d amplifier circuit
11/15/2011	US8059576 Signal repeater system
11/15/2011	US8059078 Semiconductor device, and display device and electronic device utilizing the same
11/15/2011	US8058930 Capacitively-coupled non-uniformly distributed amplifier
11/15/2011	US8058929 Maintaining loop linearity in presence of threshold adjustment
11/15/2011	US8058927 Amplifier modulation method and apparatus
11/15/2011	CA2523781C Distributed gain network
11/10/2011	WO2011140145A2 Noise-canceling for differential amplifiers requiring no external matching
11/10/2011	WO2011139613A1 Method for using an amplifier
11/10/2011	WO2011139000A1 Dynamic bias current-starved inverter and low-power delta-sigma modulator using the inverter
11/10/2011	WO2011138904A1 Circuit module and measurement method
11/10/2011	WO2011137832A2 Doherty circuit, n-way doherty circuit and base station equipment
11/10/2011	WO2011137635A1 Power amplifier and method for amplifying signals based on the same
11/10/2011	WO2011115888A3 Offset calibration and precision hysteresis for a rail-rail comparator with large dynamic range
11/10/2011	WO2011112720A4 Class ab amplifiers
11/10/2011	US20110275330 System and method for power amplifier over-voltage protection
11/10/2011	US20110273236 Power control of reconfigurable outphasing chireix amplifiers and methods
11/10/2011	US20110273235 Feedforward controlled envelope modulator and feedforward control circuit thereof
11/10/2011	US20110273234 Reconfigurable outphasing chireix amplifiers and methods
11/10/2011	US20110273233 Maintaining loop linearity in presence of threshold adjustment
11/10/2011	US20110273232 Differential amplifier circuit
11/10/2011	US20110273231 Semiconductor integrated circuit
11/10/2011	US20110273230 Class ab output stage
11/10/2011	US20110272559 Detector array for high speed sampling of a pulse
11/10/2011	DE102010039359A1 Durchbruchspannungsvervielfacherschaltung Durchbruchspannungsvervielfacherschaltung
11/10/2011	DE102007060430B4 Integrierte Halbleiter-Schaltung The semiconductor integrated circuit
11/09/2011	EP2384543A1 Power amplifier protection
11/09/2011	CN202035043U Communicator for locomotive double heading
11/09/2011	CN202034948U Amplifier system for urban rail transit system
11/09/2011	CN202033680U Integral control circuit of semiconductor test system
11/09/2011	CN1954495B Method and apparatus having a digital PWM signal generator with integral noise shaping
11/09/2011	CN1918790B Radio frequency low noise amplifier with automatic gain control
11/09/2011	CN102239635A Pulse-width modulation with selective pulse-eliminator
11/09/2011	CN102239634A Received light amplification circuit and optical disc device
11/09/2011	CN102237854A Differential amplifier circuit
11/09/2011	CN102237853A Power control of reconfigurable outphasing chireix amplifiers and methods
11/09/2011	CN102237852A Power amplifier
11/09/2011	CN102236047A Power detector circuit for measuring output power of amplifier circuit, and electronic circuit
11/09/2011	CN101771384B Non-dead time power amplifier output-stage circuit
11/09/2011	CN101677228B Power amplifier system, control method and control device thereof
11/09/2011	CN101615893B Amplifier using delta-sigma modulation and method for adjusting errors of same
11/09/2011	CN101442294B Amplifying circuit and method for improving linearity thereof
11/09/2011	CN101356725B Amplifier, amplifying method and filter
11/09/2011	CN101183854B Amplifier
11/08/2011	US8054979 Audio system for improving a signal to noise ratio
11/08/2011	US8054136 Electronic circuit
11/08/2011	US8054135 Class-E amplifier and lighting ballast using the amplifier
11/08/2011	US8054133 Device and method for eliminating feedback common mode signals
11/08/2011	US8054132 OP-amp circuit
11/08/2011	US8054131 Transconductor circuit
11/08/2011	US8054130 Method for measuring the saturation rate of an audio amplifier
11/08/2011	US8054128 Current control mechanism for low voltage applications
11/08/2011	US8054126 Dynamic bias supply devices
11/03/2011	WO2011137052A1 Multi-edge pulse width modulator with non-stationary residue assignment
11/03/2011	WO2011134905A1 Hybrid networks
11/03/2011	WO2011074873A3 Class e power amplifier
11/03/2011	US20110268457 Method and apparatus for optical signaling
11/03/2011	US20110268289 Ground loop noise rejection for a headset subsystem
11/03/2011	US20110267145 Comparison apparatus and speed-up method for comparator
11/03/2011	US20110267144 Noise-canceling for differential amplifiers requiring no external matching
11/03/2011	US20110267139 Automatic level control
11/03/2011	US20110267111 Wide dynamic range, wide bandwidth, voltage to current converter
11/02/2011	EP2383893A2 Integrated circuit, communication unit and method for improved amplitude resolution of an RF-DAC
11/02/2011	EP2383887A1 Multi-port amplifier and wireless device using same
11/02/2011	EP2383885A1 Transimpedance amplifier
11/02/2011	EP2383884A1 High frequency amplifier, wireless device and control method
11/02/2011	EP2383883A1 Power amplifier
11/02/2011	EP2382706A1 Push-pull linear hybrid class h amplifier
11/02/2011	EP2382705A1 Power amplifier
11/02/2011	EP2074694B1 Automatic zero voltage switching mode controller
11/02/2011	EP1639701B1 Low voltage circuit for interfacing with high voltage analog signals
11/02/2011	CN202026280U Transmitter signal equal phase shift symmetrical amplifying circuit of Coriolis mass flowmeter
11/02/2011	CN102232204A Voltage generator, control circuit, vector synthesis type phase shifter and optical transceiver
11/02/2011	CN102231621A Hot backup method and hot backup device for multi-channel power amplifier
11/01/2011	US8050783 System and method for pre-distorting a device input
11/01/2011	US8049566 Feedback LNA with resistor
11/01/2011	US8049565 Multi-mode high efficiency linear power amplifier
11/01/2011	US8049564 Distributed active transformer amplifier with differential power combiner

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