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)
10/2004
10/28/2004	US20040212431 High-speed low-power dynamic current biased operational amplifier
10/28/2004	US20040212430 Common-mode current-feedback circuitry
10/28/2004	US20040212427 Audio amplifier circuit
10/28/2004	US20040212425 Dynamic current generator with asymmetric common-mode input range
10/28/2004	US20040212423 Audio signal amplifier circuit and electronic apparatus having the same
10/28/2004	US20040212374 Current-to-voltage converting apparatus and impedance measuring apparatus
10/28/2004	US20040211886 Low noise light receiver
10/28/2004	DE10316640A1 Antenna coupling circuit, e.g. for FM receiver, has negative resistance connected in parallel with inductance in main resonant circuit
10/27/2004	EP1471646A2 Comparing circuit and offset compensating apparatus
10/27/2004	EP1471640A2 PWM signal generator and PWM signal generating method
10/27/2004	EP1470636A1 N-way rf power amplifier with increased backoff power and power added efficiency
10/27/2004	EP1470635A1 Composite power amplifier
10/27/2004	EP1470609A1 Solid state transmitter circuit
10/27/2004	EP1092265A4 Amplification using amplitude reconstruction of amplitude and/or angle modulated carrier
10/27/2004	CN2652040Y Digital audio-frequency amplify super-scale integrated chip with random bit
10/27/2004	CN1541452A 差动电荷泵 Differential charge pump
10/27/2004	CN1541443A Open loop variable gain amplifier using replica gain cell
10/27/2004	CN1540870A Comparator circuit and bias compensator
10/27/2004	CN1540859A RF power amplifying modular
10/27/2004	CN1540858A Audio Signal amplifier circuit and electrnic appts. having same
10/27/2004	CN1540857A Distortion compensating circuit and emitting appts. contg. same
10/27/2004	CN1173594C Electronic circuit unit
10/27/2004	CN1173465C High-gain and no-self excitation antenna amplifier
10/27/2004	CN1173464C Computing amplifier capable of operating under low voltage
10/27/2004	CN1173463C Method and apparatus using for automatic predistoring system
10/26/2004	US6809670 Current-steering/reproducing digital-to-analog current converter
10/26/2004	US6809596 DC offset cancellation circuit, system and method
10/26/2004	US6809593 Power amplifier device and method thereof
10/26/2004	US6809590 Output stage using positive feedback to provide large current sourcing capability
10/26/2004	US6809589 Low voltage large swing/high linearity analog buffer with servo amplifier and feedback loop
10/26/2004	US6809586 Digital switching power amplifier
10/26/2004	US6809581 Integrated circuit low noise amplifier and applications thereof
10/26/2004	US6809578 Stable voltage generating circuit
10/26/2004	US6809572 Integrated circuit with automatic polarity detection and configuration
10/26/2004	CA2297716C Automatic gain control circuit and optical receiver
10/21/2004	WO2004091097A1 Glitch-free controllable rf power amplifier
10/21/2004	WO2004091096A1 Digital amplifier
10/21/2004	WO2004091095A1 Switchable amplifier circuit having reduced shutdown current
10/21/2004	WO2004091094A1 Distortion compensation device
10/21/2004	WO2004091093A1 Transmission amplifier
10/21/2004	WO2004091092A1 Digital amplifier
10/21/2004	WO2004091091A1 Digital amplifier
10/21/2004	WO2003077416A3 Adjustable gain control system and method thereof
10/21/2004	US20040210789 Distortion compensation circuit, and a transmission apparatus including the same
10/21/2004	US20040209583 Systems and methods for reusing a low noise amplifyer in a wireless communications device
10/21/2004	US20040208652 Optical receiver
10/21/2004	US20040208262 Power amplifier circuit and method using bandlimited signal component estimates
10/21/2004	US20040208047 Electronic circuit, electronic device, electro-optical apparatus, and electronic unit
10/21/2004	US20040207473 Optical receiver with wide dynamic range transimpedance amplifier
10/21/2004	US20040207472 Optical receiver with wide dynamic range transimpedance amplifier
10/21/2004	US20040207471 Variable gain low noise amplifier
10/21/2004	US20040207470 Differential amplifier with a common mode voltage loop
10/21/2004	US20040207469 Amplifier
10/21/2004	US20040207468 Power amplification circuit and method for supplying power at a plurality of desired power output levels
10/21/2004	US20040207466 Systems and methods for providing multi channel pulse width modulated audio with staggered outputs
10/21/2004	US20040207465 Multi level Class-D amplifier by means of 2 physical layers
10/21/2004	US20040207449 Rail-to-rail operational amplifier circuits to extract the mean (common mode) voltage of two input signals
10/21/2004	US20040207434 Driver including voltage-follower-type operational amplifier with high driving power and display apparatus using the same
10/21/2004	US20040207100 Semiconductor latches and sram devices
10/21/2004	DE102004013139A1 Offsetkompensationsschaltkreis, der eine Offsetspannung eines Treiberschaltkreises kompensiert, sowie Treiberschaltkreis mit Offsetkompensationsfähigkeit und Flüssigkristallanzeigevorrichtung, die den Offsetkompensationsschaltkreis verwenden Offset compensation circuit which compensates an offset voltage of a driver circuit, and driving circuit with offset compensation capability, and liquid crystal display apparatus that use the offset compensation circuit
10/20/2004	EP1469607A2 Handset radiofrequency front end module in fine pitch quad flat no lead (FQFP-N) package
10/20/2004	EP1469595A2 Negative feedback amplifier
10/20/2004	EP1469594A1 Multi level Class-D amplifier by means of 2 physical layers
10/20/2004	EP1469593A2 A distortion compensation circuit and a transmission apparatus
10/20/2004	EP1469592A1 Apparatus for and method of controlling the base bias voltage of an HBT
10/20/2004	EP1469490A1 An audio signal processing circuit and a display device incorporating the same
10/20/2004	EP1468493A2 Data receiver gain enhancement
10/20/2004	EP1468489A1 Operational amplifier having improved input offset performance
10/20/2004	EP1468488A2 Charge or particle sensing
10/20/2004	EP1468487A2 A high performance bifet low noise amplifier
10/20/2004	CN1538617A Offset compensation circuit and drive circuit and liquid crystal display device using it
10/20/2004	CN1538412A Front photoelectric detector, optical pick-up, and optical recording and/or playing equipment
10/20/2004	CN1172432C Amplifier load regulating system based on memory
10/19/2004	US6807118 Adjustable offset differential amplifier
10/19/2004	US6806778 Darlington cascode
10/19/2004	US6806777 Ultra wide band low noise amplifier and method
10/19/2004	US6806776 Transconductor tuning circuit
10/19/2004	US6806775 Power amplifier circuit
10/19/2004	US6806774 Power amplifier and communication device including power amplifier
10/19/2004	US6806772 Power transistor array temperature control system
10/19/2004	US6806771 Multimode output stage converting differential to single-ended signals using current-mode input signals
10/19/2004	US6806770 Operational amplifier
10/19/2004	US6806769 Differential amplifier
10/19/2004	US6806768 Balanced power amplifier with a bypass structure
10/19/2004	US6806767 Power amplifier with load switching circuit
10/19/2004	US6806766 BTL amplifying system
10/19/2004	US6806756 Analog signal conditioning circuit having feedback offset cancellation
10/19/2004	US6806745 Sample-and-hold amplifier circuit and pipelined A/D and D/A converters using sample hold amplification circuit
10/19/2004	US6806743 Semiconductor integrated circuit device
10/19/2004	US6806106 Bond wire tuning of RF power transistors and amplifiers
10/19/2004	CA2311434C Differential photoelectric receiver circuit
10/15/2004	CA2425700A1 Utilizing vacuum tubes in computer audio circuitry
10/14/2004	WO2004088838A1 Linear amplifier
10/14/2004	WO2004088837A2 Doherty amplifier with output hybrid coupler
10/14/2004	WO2004015858A3 Highly linear variable gain amplifier
10/14/2004	US20040205424 Differential filter with high common mode rejection ratio
10/14/2004	US20040202311 Bidirectional distributed amplifier
10/14/2004	US20040201510 Single end to differential signal converter
10/14/2004	US20040201424 Idss RF amplifier
10/14/2004	US20040201423 Handset radiofrequency front end module in fine pitch quad flat no lead (FQFP-N) package

1 ... 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 ... 441