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)
10/2006
10/19/2006	US20060232336 Variable-gain differential amplifier
10/19/2006	US20060232335 Method for single-end offset compensation of an operational amplifier
10/19/2006	US20060232334 Analogue multiplier
10/19/2006	US20060232333 Device for connecting electric household appliances to an electric power main
10/19/2006	US20060232331 Segmented chopping amplifier
10/19/2006	DE112004002206T5 Operationsverstärker zum Selektieren eines Eingangssignals und den Operationsverstärker verwendende Verstärkungsvorrichtung für das Verifikationsverfahren Operational amplifier for selecting an input signal and the operational amplifiers used for amplifying apparatus, the verification procedure
10/19/2006	DE112004001976T5 Hochlinearität-Doherty-Kommunikationsverstärker mit Vorspannungssteuerung High linearity Doherty amplifier with bias control communication
10/19/2006	DE10249016B4 Mehrpegeltreiberstufe Multi-level driver stage
10/18/2006	EP1713177A1 Variable gain differential amplifier
10/18/2006	EP1713176A1 Power amplifier unit, communication terminal and control method of power amplifier unit
10/18/2006	EP1713175A1 Switching amplifier
10/18/2006	EP1712049A1 Fractional-n sigma-delta modulator comprising an adaptive compensation filter that compensates for the undesired effects of the phase locked loop and methods thereof
10/18/2006	EP1711875A1 Bootstrap capacitor refresh circuit
10/18/2006	EP1295356B1 Mode translating waveguide adapter for a quasi-optic grid array
10/18/2006	EP1293011B1 Techniques for enhancing gain in a quasi-optic grid array
10/18/2006	EP1260018B1 Emitter follower with constant collector current biasing means
10/18/2006	EP0904633B1 Power delivery system and method of controlling the power delivery system for use in a radio frequency system
10/18/2006	CN2829215Y D-type power amplifying circuit
10/18/2006	CN1848672A Integral navigation of preventing interruption of audio signal, for and audio/video integral system and method thereof
10/18/2006	CN1848671A Variable-gain differential amplifier
10/18/2006	CN1848670A Power amplifier circuit and method of controlling switch
10/18/2006	CN1848669A Bipolar transistor and radio frequency amplifier circuit
10/18/2006	CN1848668A Differential amplifier circuitry formed on semiconductor substrate with rewiring technique
10/18/2006	CN1848459A Light receiving circuit, semiconductor laser device, and optical pickup device
10/18/2006	CN1280984C Amplifier circuit and method
10/18/2006	CN1280982C High frequency power amplifier circuit
10/18/2006	CN1280981C Power amplifier, power amplifying method and radio communication device
10/18/2006	CN1280776C Dptical receiving machine
10/17/2006	US7123730 Audio power amplifying apparatus and method
10/17/2006	US7123664 Multi-mode envelope restoration architecture for RF transmitters
10/17/2006	US7123531 Differential amplifier and bit-line sense amplifier adopting the same
10/17/2006	US7123250 Electric circuit
10/17/2006	US7123231 Driving circuit for liquid crystal display
10/17/2006	US7123114 Switchable combiner and integrated combining apparatus for using it
10/17/2006	US7123099 Two-stage amplifier with series L-R coupling network
10/17/2006	US7123098 Transimpedance amplifier with differential peak detector
10/17/2006	US7123097 Ultra-wideband constant gain CMOS amplifier
10/17/2006	US7123096 Quadrature offset power amplifier
10/17/2006	US7123095 High frequency power amplifier circuit and radio communication system
10/17/2006	US7123094 High frequency power amplifier circuit and radio communication system
10/17/2006	US7123093 Semiconductor integrated circuit
10/17/2006	US7123092 Differential amplifier with limitation of high common mode output voltages
10/17/2006	US7123091 Darlington differential amplifier
10/17/2006	US7123089 Power amplifier with pulse differentiating circuit
10/17/2006	US7123087 Radio frequency power amplifier
10/17/2006	US7123086 Feed forward amplifier employing positive feedback pilot generation
10/17/2006	US7123083 Active filter circuit with operational amplifier
10/17/2006	US7123082 Variable time constant circuit and filter circuit using the same
10/17/2006	US7123080 Differential amplification input circuit
10/17/2006	US7123073 Amplifier and frequency converter
10/17/2006	US7123045 Semiconductor integrated circuit device
10/17/2006	CA2362101C A closed loop calibration for an amplitude reconstruction amplifier
10/12/2006	WO2006107815A2 Gate driver for class d audio amplifier with adaptive dv/dt control
10/12/2006	WO2006107261A1 Programmable microwave circuit
10/12/2006	WO2006106471A1 Device comprising a switching amplifier and a load
10/12/2006	WO2006106281A1 An electrical circuit, a detection system and an operating method thereof
10/12/2006	WO2006073463A3 Amplifier with pulse coded output and remote signal reconstruction from the pulse output
10/12/2006	WO2006034371A3 Low voltage operational transconductance amplifier circuits
10/12/2006	US20060226913 Circuit for varying gain of preamplifier
10/12/2006	US20060226912 Apparatus and method for limiting voltage surge at amplifier start up
10/12/2006	US20060226911 Linearized bias circuit with adaptation
10/12/2006	US20060226910 Bias circuit for a wideband amplifier driven with low voltage
10/12/2006	US20060226909 Monolithic supply-modulated rf power amplifier and dc-dc power converter ic
10/12/2006	US20060226908 Differential amplifying method and apparatus operable with a wide range input voltage
10/12/2006	US20060226907 Vector modulator having attenuators with continuous input steering
10/12/2006	US20060226906 Differential amplifier and method for generating computer simulation model thereof
10/12/2006	US20060226905 Stacked RF power amplifier
10/12/2006	US20060226904 Minimum on time, dual supply class D amplifiers with ground speaker returns and methods of class D amplification
10/12/2006	US20060226900 Demodulation and regulation concept for IR receivers
10/12/2006	US20060226899 Operational amplifier, line driver, and liquid crystal display device
10/12/2006	DE102005058464A1 Doherty-Mikrowellenverstärker und Signalverarbeitungsverfahren für diesen Doherty microwave amplifier and signal processing technology for this
10/12/2006	DE102005030565B3 Class D power output stage for driving xDSL signals has switching transistors whose voltage potential is lower than that of delimitation transistors
10/12/2006	DE102005016295A1 Inductance for low pass filter of bridge amplifier has at least one pair of coils comprised of windings that are magnetically coupled with one another
10/11/2006	EP1710918A1 Transmitter and wireless communication apparatus
10/11/2006	EP1710908A1 Variable gain circuit
10/11/2006	EP1709738A1 Compound load for differential circuits
10/11/2006	EP1709733A2 Improved power supply rejection for pulse width modulated amplifiers and automatic gain control
10/11/2006	CN1845452A Operational amplifier with less offset
10/11/2006	CN1845451A Multi carrier power amplifier in wireless communication system
10/11/2006	CN1279692C High frequency amplifier and amplifying component
10/10/2006	US7120411 Low noise amplifier (LNA) gain switch circuitry
10/10/2006	US7120394 Front-end module and communication terminal
10/10/2006	US7120270 Audio device heat transferring
10/10/2006	US7119802 Driving voltage controller
10/10/2006	US7119631 Off-chip LC circuit for lowest ground and VDD impedance for power amplifier
10/10/2006	US7119629 Synchronized controlled oscillation modulator
10/10/2006	US7119623 Output circuit for a semiconductor amplifier element
10/10/2006	US7119622 Amplification device with a bias circuit
10/10/2006	US7119621 Power amplifier
10/10/2006	US7119620 Method and system for constant or proportional to absolute temperature biasing for minimizing transmitter output power variation
10/10/2006	US7119619 Reconfigurable distributed active transformers
10/10/2006	US7119618 Method of forming a wide bandwidth differential amplifier and structure therefor
10/10/2006	US7119617 Differential amplifier
10/10/2006	US7119615 Electronic amplifier circuit
10/10/2006	US7119614 Multi-band power amplifier module for wireless communications
10/10/2006	US7119613 RF amplifier
10/10/2006	US7119612 Dual-channel instrumentation amplifier
10/10/2006	US7119611 On-chip calibrated source termination for voltage mode driver and method of calibration thereof
10/10/2006	US7119547 Testing apparatus
10/05/2006	WO2006105413A2 Doherty power amplifier with phase compensation

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