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)
09/2009
09/01/2009	US7583142 Low skew differential amplifier using tail voltage reference and tail feedback
09/01/2009	US7583141 Output circuit of vacuum-tube amplifier
09/01/2009	US7583140 Output circuit of vacuum-tube amplifier
09/01/2009	US7583138 System and method for controlling an error amplifier between control mode changes
09/01/2009	US7583137 Power supply compensation
08/2009
08/27/2009	WO2009105696A1 Feedback technique and filter and method
08/27/2009	WO2009058702A3 Automatic power source configuration
08/27/2009	WO2009052283A3 Adaptively tuned rf power amplifier
08/27/2009	WO2009042474A3 Reduced voltage differential receiver
08/27/2009	WO2004017526A3 Power regulator for intermittent use of traveling wave tube amplifiers in communications satellites
08/27/2009	US20090213165 Optical sensor for a printer
08/27/2009	US20090212873 Semiconductor device
08/27/2009	US20090212872 Wideband Active Balun Using Darlington Pair
08/27/2009	US20090212871 Multi-planar solid state amplifier
08/27/2009	US20090212870 Cascode-cascade power amplifier assembly
08/27/2009	US20090212869 Distributed amplifier with negative feedback
08/27/2009	US20090212868 Low power comsumption, low noise and high power gain distributed amplifers for communication systems
08/27/2009	US20090212866 Class ab amplifier
08/27/2009	US20090212865 Differential Audio Amplifier
08/27/2009	US20090212864 Preamplifier for receiver and method thereof
08/27/2009	US20090212863 Power amplifier
08/27/2009	US20090212862 Op-amp circuit and op-amp circuit driving method
08/27/2009	US20090212861 Low noise amplifier
08/27/2009	US20090212857 DC Self-Biased Vacuum Tube Differential Amplifier With Grid-to-Cathode Over-Voltage Protection
08/27/2009	US20090212198 Method and Apparatus for a Light Fixture Having a Security Light and Permanently Mounted Wall-Washing LEDs
08/27/2009	DE102009009358A1 System und Verfahren für einen Stoßbetrieb-Verstärker System and method for a burst-mode amplifier
08/27/2009	DE102009008753A1 Automatisches Vorspannen eines Verstärkers Automatic pre-amplifier of a
08/27/2009	DE102009004833A1 Halbleiterleistungselement mit Vorspannungsschalter Semiconductor power device with bias switch
08/26/2009	EP2094070A2 Power amplification device and transmitter using it
08/26/2009	EP2092709A1 Pulse width modulator
08/26/2009	EP2092639A1 True current limiting (tcl)
08/26/2009	EP2092638A1 Class-d amplifier
08/26/2009	EP2092543A2 Method and apparatus for rf input coupling for inductive output tubes and other emission gated devices
08/26/2009	EP1889373A4 By-pass arrangement of a low noise amplifier
08/26/2009	EP1798627B1 Constant voltage generating circuit
08/26/2009	EP1676363B1 Transconductance circuit
08/26/2009	EP1470636B1 N-way rf power amplifier with increased backoff power and power added efficiency
08/26/2009	EP1290785B1 Devices and methods for calibrating amplifier stages and for compensating errors in components arranged upstream of amplifier stages
08/26/2009	EP0921624B1 Device for driving self arc-extinguishing type power element
08/26/2009	CN201298826Y Power amplification circuit of quasi-resonance electromagnet water heater
08/26/2009	CN201298825Y Audio power amplifier current amplifying output circuit with soft start bias
08/26/2009	CN201296224Y Automotive anti-collision alarm system based on a virtual instrument
08/26/2009	CN101517892A Harmonic processing circuit and amplifying circuit using the same
08/26/2009	CN101517891A Controlled power converter
08/26/2009	CN101515790A Millimeter wave band power amplifier based on flexible chip integrated wave guide technology
08/26/2009	CN101515789A Preamplifier for receiver and method thereof
08/26/2009	CN101515788A Vehicle power amplifying circuit
08/26/2009	CN101515787A Audio power amplifier device
08/26/2009	CN101515786A Power amplifier
08/26/2009	CN101515785A Feedforward amplifier and control method thereof
08/26/2009	CN100534075C Adaptive equalizer with DC offset compensation
08/26/2009	CN100533963C Dynamically accelerated operational amplifier and method thereof
08/26/2009	CN100533962C Operational amplifier with less offset voltage
08/26/2009	CN100533961C Voltage comparator circuit
08/26/2009	CN100533960C Arrangement for amplifying a PWM input signal
08/26/2009	CN100533959C Electronics parts for high frequency power amplifier
08/26/2009	CN100533958C Signal modulation method and circuit for class-D amplification
08/26/2009	CN100533956C Uncorrelated self-adaptive predistorter
08/26/2009	CN100533955C Front stage amplifier with different modes
08/26/2009	CN100533953C Amplifier circuit having an impedance-controllable bias-boosting circuit
08/25/2009	US7580722 Control of a power amplifier for reducing power consumption in a transceiver
08/25/2009	US7580687 System-in-package wireless communication device comprising prepackaged power amplifier
08/25/2009	US7580684 Programmable radio transceiver
08/25/2009	US7580674 Intelligent interface for controlling an adaptive antenna array
08/25/2009	US7580532 Multi-channel pulse width modulation apparatus
08/25/2009	US7580476 Communication system and method for improving efficiency and linearity
08/25/2009	US7579915 Electronic circuit
08/25/2009	US7579914 Bias circuit and power amplifier
08/25/2009	US7579913 Low power comsumption, low noise and high power gain distributed amplifiers for communication systems
08/25/2009	US7579912 Method and system for multiple tuner application using a low noise broadband distribution amplifier
08/25/2009	US7579911 Semiconductor circuit
08/25/2009	US7579910 Low distortion switching amplifier circuits and methods
08/25/2009	US7579908 Digital audio amplifiers, electronic systems, and methods
08/25/2009	US7579907 Switching amplifier
08/25/2009	US7579885 Charge recycling amplifier for a high dynamic range CMOS imager
08/25/2009	US7579876 Multi-use input/output pin systems and methods
08/20/2009	WO2009102448A1 Differential current output driver with overvoltage protection
08/20/2009	WO2009101905A1 Power amplifier
08/20/2009	WO2009065068A3 Switching amplifiers
08/20/2009	US20090206935 Reconfigurable Circuit to Compensate for a Low Noise Amplification Input Matching Variation and a Method for Its Configuration
08/20/2009	US20090206931 Differential Amplifier and Applications Thereof
08/20/2009	US20090206930 Amplifier circuit with voltage interpolation function
08/20/2009	US20090206929 Operation amplifier for improving slew rate
08/20/2009	US20090206928 Enhanced doherty amplifier with asymmetrical semiconductors
08/20/2009	US20090206927 Amplifier
08/20/2009	US20090206926 High Efficiency Amplifier
08/19/2009	EP2091144A1 Transmission method and transmission device
08/19/2009	EP2089967A2 Apparatus and method for controlling a common-mode voltage of switching amplifiers
08/19/2009	EP1719251B1 Control of a power amplifier for reducing power consumption in a transceiver
08/19/2009	EP1393437B1 Method and apparatus for compensation of second order distortion
08/19/2009	CN201294522Y Circuit for implementing TD-SCDMA power amplifier module control
08/19/2009	CN201294493Y Hierarchical amplifying circuit and multifunctional data acquisition card
08/19/2009	CN201294492Y D genus power amplifier with wireless digital tone source input
08/19/2009	CN201294491Y Application-specific integrated circuit for channel note magnification
08/19/2009	CN201294490Y Device for collecting and processing photoelectric coupling signal
08/19/2009	CN101512897A Amplifier employing interleaved signals for PWM ripple suppression
08/19/2009	CN101512896A Digital amplifier
08/19/2009	CN101512895A Amplifier architecture for polar modulation
08/19/2009	CN101510786A Receiver with low power consumption
08/19/2009	CN101510763A Millimeter-wave monolithic integrated power amplifier

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