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)
11/2004
11/11/2004	US20040222849 Multiport amplifying apparatus using digital quadrature baseband hybrid circuit for each hybrid in input hybrid network
11/11/2004	US20040222848 Balanced radio frequency power amplifier with temperature compensation
11/11/2004	US20040222847 RF amplifier employing active load linearization
11/11/2004	US20040222846 Power supply based audio compression for digital audio amplifier
11/11/2004	US20040222845 Class-D power amplifier capable of eliminating excessive response phenomenon when returning to a steady state from an abnormal state and an amplification method thereof
11/11/2004	US20040222844 Operational amplifier with adjustable input offset
11/11/2004	US20040222838 Linearizing apparatus and method
11/11/2004	DE10304873A1 Circuit with a traveling wave amplifier for high frequency signals has many amplification steps and a differential amplification step to adjust the work point of each amplifier
11/10/2004	EP1475887A2 Multiport amplifying apparatus using digital quadrature baseband hybrid circuit for each hybrid in input hybrid network
11/10/2004	EP1475886A1 Method and apparatus having resonant circuit adjustable for minimum power consumption of an amplifier
11/10/2004	EP1474865A2 Deed forward rf power amplifier with high efficiency main amplifier and highly linear error amplifier
11/10/2004	EP1474864A2 Output circuit for a semiconductor amplifier element
11/10/2004	EP1474863A1 Transistor arrangement
11/10/2004	EP0914728B1 Arrangements and methods for generating a radio frequency signal
11/10/2004	CN1545801A Adaptive bandwidth control in a kinescope amplifier
11/10/2004	CN1545208A DC offset cancellation circuit, differential amplification circuit with DC offset cancellation circuit and photo-electric pulse conversion circuit
11/10/2004	CN1175559C Power amplifier without cross-over distortion
11/10/2004	CN1175558C Amplifier output stage
11/10/2004	CN1175515C Radio repeater using non-radiation dielectric waveguide
11/09/2004	US6816714 Antenna interface unit
11/09/2004	US6816017 Power amplifier module
11/09/2004	US6816015 Amplifier circuit having a plurality of first and second base resistors
11/09/2004	US6816014 Low quiescent power class AB current mirror circuit
11/09/2004	US6816012 Distributed circular geometry power amplifier architecture
11/09/2004	US6816011 RF power amplifier and method for packaging the same
11/09/2004	US6816010 Transimpedance amplifier
11/09/2004	US6816008 Quasi-linear multi-state digital modulation through non-linear amplifier arrays
11/09/2004	US6816007 Amplifier with dynamic rail control drive circuit
11/09/2004	US6816003 Circuits with dynamic biasing
11/09/2004	US6816002 Circuit arrangement for controlling a constant current through a load
11/09/2004	US6815988 Differential charge pump
11/09/2004	US6815707 Field-effect type semiconductor device for power amplifier
11/09/2004	CA2376410C Cascode distributed amplifier
11/09/2004	CA2315848C Method and apparatus for an automatic predistortion system
11/04/2004	WO2004095692A2 Linearizing apparatus and method
11/04/2004	WO2004095690A1 Amplifier arrangement and distributed audio system
11/04/2004	WO2004095688A2 Amplifier circuit
11/04/2004	WO2004095687A2 A facilitating fault tolerance in a rf amplifier system
11/04/2004	WO2004068700A3 High linearity low noise amplifier
11/04/2004	WO2004043062A8 Read-out circuit for infrared detectors.
11/04/2004	WO2003075454A3 Operational amplifier with increased common mode input range
11/04/2004	US20040219893 Wireless communication system and communication semiconductor integrated circuit device
11/04/2004	US20040219891 Polar modulation transmitter
11/04/2004	US20040217818 Low noise amplifier
11/04/2004	US20040217817 Low noise balanced amplifier
11/04/2004	US20040217814 Amplifier apparatus, method, and system
11/04/2004	US20040217813 Self-bias and digitally tunable conduction angle circuits for a differential RF non-linear power amplifier employing low-voltage transistors
11/04/2004	US20040217812 Large gain-bandwidth amplifier, method, and system
11/04/2004	US20040217808 Sound signal generating apparatus and method for reducing pop noise
11/04/2004	US20040217806 Integrated rc filter
11/04/2004	US20040217780 DC component cancellation circuit
11/04/2004	CA2522495A1 Amplifier arrangement and distributed audio system
11/03/2004	EP1473830A2 Photo-amplifier circuit with improved power supply rejection
11/03/2004	EP1472788A2 A voltage limiting semiconductor pass gate circuit
11/03/2004	EP1472785A2 Amplifier and frequency converter
11/03/2004	EP1472734A2 Rf amplifier
11/03/2004	EP1472640A1 An electronic circuit for converting a current signal to a voltage signal
11/03/2004	CN1543705A Distributed amplifier having separately biased sections
11/03/2004	CN1543060A Photo-amplifier circuit with improved power supply rejection
11/03/2004	CN1543027A Bias flow generating circuit, laser diode drive circuit and light transmission transmitter
11/03/2004	CN1542509A Audio signal processing circuit and a display device incorporating the same
11/03/2004	CN1174547C System and method for converting single-ended signal to differential signal
11/03/2004	CN1174546C Semiconductor integrated circuit
11/02/2004	US6813320 Wireless telecommunications multi-carrier receiver architecture
11/02/2004	US6813319 System and method for transmitting digital information using interleaved delta modulation
11/02/2004	US6812796 Inter-stage coupling in multistage amplifiers
11/02/2004	US6812795 Transimpedance amplifier with feedback resistive network
11/02/2004	US6812794 Multistage amplifier
11/02/2004	US6812793 Power supply rejection circuit for an audio amplifier
11/02/2004	US6812788 Amplifying circuit
11/02/2004	US6812787 Reference voltage generating circuit and voltage amplifier using the same
11/02/2004	US6812786 Zero-bias bypass switching circuit using mismatched 90 degrees hybrid
11/02/2004	US6812785 Digital power amplifier and digital/analog converter
11/02/2004	US6812784 Amplifier common-mode feedback systems for use with switched-capacitor structures
11/02/2004	US6812781 Differential amplifier, semiconductor device, power supply circuit and electronic equipment using the same
11/02/2004	US6812777 Output circuit device for clock signal distribution in high-speed signal transmission
11/02/2004	US6812771 Digitally-controlled, variable-gain mixer and amplifier structures
11/02/2004	US6812768 Input circuit, display device and information display apparatus
11/02/2004	US6812757 Phase lock loop apparatus
11/02/2004	US6812746 Method and apparatus for amplifying a regulated differential signal to a higher voltage
11/02/2004	US6812744 Integrated circuit beta compensator for external interface circuitry
11/02/2004	US6812740 Low-voltage drive circuit and method for the same
11/02/2004	US6812684 Bandgap reference circuit and method for adjusting
11/02/2004	US6812546 Current mirror circuit and optical signal circuit using same
11/02/2004	CA2109755C Composite bridge amplifier with output overload and thermal protection
10/2004
10/28/2004	WO2004093328A2 Bidirectional distributed amplifier
10/28/2004	WO2004093311A1 Differential voltage amplifier circuit
10/28/2004	US20040214389 Semiconductor latches and SRAM devices
10/28/2004	US20040213573 Amplifier composite triple beat (CTB) reduction by phase filtering
10/28/2004	US20040213343 Pulse width modulator and pulse width modulation method
10/28/2004	US20040212867 System and circuit for a multi-channel optoelectronic device driver
10/28/2004	US20040212740 Adaptive bandwidth control in a kinescope amplifier
10/28/2004	US20040212524 PWM signal generator and PWM signal generating method
10/28/2004	US20040212438 Radio frequency power amplifier module
10/28/2004	US20040212437 Power amplifier
10/28/2004	US20040212436 High frequency power amplifier circuit device
10/28/2004	US20040212435 High frequency power amplifier and wireless communication module
10/28/2004	US20040212434 Electronic component for high frequency power amplifier and radio communication system
10/28/2004	US20040212433 Power amplifier device and method thereof
10/28/2004	US20040212432 Semiconductor integrated circuit for high frequency power amplifier, electronic component for high frequency power amplifier, and radio communication system

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