| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 06/23/2005 | US20050134373 Switchable gain amplifier |
| 06/23/2005 | US20050134371 Offset cancellation and slice adjust amplifier circuit |
| 06/23/2005 | US20050134370 Method of self-calibration of pulse rise and fall times |
| 06/23/2005 | US20050134369 Method and apparatus to perform on-die waveform capture |
| 06/23/2005 | US20050134368 Switching scheme to improve linearity and noise in switched capacitor stage with switched feedback capacitor |
| 06/23/2005 | US20050134359 Metal-oxide-semiconductor device having integrated bias circuit |
| 06/23/2005 | US20050134329 Transconductor circuit for compensating the distortion of output current |
| 06/23/2005 | US20050134328 Transconductor circuit for compensating the distortion of output current |
| 06/23/2005 | US20050134118 System and method for driving one or more loads |
| 06/23/2005 | DE10345519B3 Differential amplifier arrangement has two transistor pairs with common source or emitter nodes respectively connected via current source and directly to reference potential connection |
| 06/23/2005 | DE102004047684A1 Transmission device for movable-type communication apparatus, has electric power control unit outputting respective controls signals, to input unit of predistortion unit, so as to switch predistortion unit between two operating states |
| 06/23/2005 | DE10035060B4 Leistungsverstärkungsschaltung mit einer einstellbaren Impedanz am Ausgang zum Steuern des Spitzen-Mittelwert-Leistungs-Verhältnisses des verstärkten Signals und Verfahren Power amplifier circuit with an adjustable impedance at the output for controlling the peak to average power ratio of the amplified signal and method |
| 06/22/2005 | EP1543639A1 A transmitter and a method of calibrating power in signals output from a transmitter |
| 06/22/2005 | EP1543625A1 Method for optimizing an operating point of a power amplifier in a wcdma mobile terminal |
| 06/22/2005 | EP1543614A1 Preserving linearity of a rf power amplifier |
| 06/22/2005 | EP1543612A2 Power supply based audio compression for digital audio amplifier |
| 06/22/2005 | EP1543611A2 Providing dc isolation in switching amplifiers |
| 06/22/2005 | EP1224731A4 Improved predistortion compensation for a power amplifier |
| 06/22/2005 | EP0988694B1 Dynamic predistortion compensation for a power amplifier |
| 06/22/2005 | CN2705949Y Low distortion amplifier |
| 06/22/2005 | CN1631029A Driver circuit for subscriber terminals |
| 06/22/2005 | CN1630185A Amplification device with a bias circuit |
| 06/22/2005 | CN1207787C Combined transistor-capacitor structure in deep sub-micro MOS for power amplifier |
| 06/21/2005 | US6909756 Transmitter and distortion compensation method to be used therefor |
| 06/21/2005 | US6909344 Band switchable filter |
| 06/21/2005 | US6909327 Amplifier |
| 06/21/2005 | US6909326 Amplifier modulation |
| 06/21/2005 | US6909325 Multi-band amplifier |
| 06/21/2005 | US6909322 Stage of a power generator of high frequency current |
| 06/16/2005 | WO2005055417A1 Operational amplifier with output voltage correction and corresponding method |
| 06/16/2005 | WO2005055416A1 Photo-receiving pre-amplifier |
| 06/16/2005 | WO2005055415A2 Single chip power amplifier and envelope modulator |
| 06/16/2005 | WO2005036731A3 Power conversion system |
| 06/16/2005 | WO2005031968B1 Input/output signals preserver circuit of amplification circuits |
| 06/16/2005 | WO2005017956A3 Temperature-insensitive bias circuit for high-power amplifiers |
| 06/16/2005 | US20050130617 Variable-gain low noise amplifier for digital terrestrial applications |
| 06/16/2005 | US20050130609 Transmitter circuit and method for modulation distortion compensation |
| 06/16/2005 | US20050130608 Self-tuning variable impedance circuit for impedance matching of power amplifiers |
| 06/16/2005 | US20050129141 Apparatus and method for compensating for analog quadrature modulation error |
| 06/16/2005 | US20050129140 System and method for reducing dynamic range and improving linearity in an amplication system |
| 06/16/2005 | US20050128032 Tunable planar capacitor |
| 06/16/2005 | US20050128025 Ultralow temperature low noise amplification apparatus |
| 06/16/2005 | US20050128007 Preamplifier circuit, clock switching circuit, and optical receiver |
| 06/16/2005 | US20050128006 Transimpedance amplifier with linearized transconductance feedback |
| 06/16/2005 | US20050128005 Transconductance amplifier with multi-emitter structure for current balance in a multi-phase regulator |
| 06/16/2005 | US20050128004 Apparatus for controlling modulation of an alternating waveform on a DC voltage signal within a low-noise block controller |
| 06/16/2005 | US20050128003 Transistor assembly |
| 06/16/2005 | US20050128002 Output circuit |
| 06/16/2005 | US20050128000 Ultra fast, low noise voltage feedback operational amplifier with dynamic biasing |
| 06/16/2005 | US20050127996 Arrangement for reducing non-linear distortions in an output signal of an amplifier stage |
| 06/16/2005 | US20050127995 Amplifier pre-distorter method and apparatus |
| 06/16/2005 | US20050127992 Power control and modulation of switched-mode power amplifiers with one or more stages |
| 06/16/2005 | US20050127990 Method and circuit for reduced settling time in an amplifier |
| 06/16/2005 | US20050127980 Sense amplifier thermal correction scheme |
| 06/16/2005 | US20050127885 Regulator with variable capacitor for stability compensation |
| 06/16/2005 | DE102004050359A1 Verfahren und Vorrichtung zum Vorverzerrungstraining in einem Vorverzerrung verwendenden Verstärker Method and apparatus for Vorverzerrungstraining in a predistortion amplifier used |
| 06/15/2005 | EP1542357A1 A power amplifier module and a time division multiple access radio |
| 06/15/2005 | EP1540815A1 Composite power amplifier |
| 06/15/2005 | EP1384316B1 Device for controlling a closed circuit current for an amplification transistor and amplification circuit |
| 06/15/2005 | CN2704969Y Weak signal programmable controlling amplifiers |
| 06/15/2005 | CN1628411A Amplifier circuit, gyrator circuit, filter device and method for amplifying signal |
| 06/15/2005 | CN1627633A Device and method for analyzing power gain and dissipation in multistage radio frequency amplifier |
| 06/15/2005 | CN1627632A Power amplifier protector of double-frequency portable terminal and its protection method |
| 06/15/2005 | CN1627631A Power source circuit for high frequency power amplifying circuit and semiconductor integrated circuit for power source and electronics component for power source |
| 06/15/2005 | CN1206806C Load controlled amplitude envelope amplifier system |
| 06/15/2005 | CN1206801C Circuit and method for I/Q modulation with independent, high efficiency amplitude modulation |
| 06/14/2005 | US6907085 Activation method of communications apparatus with a non-linear distortion compensation device |
| 06/14/2005 | US6906595 Variable gain current feedback amplifier |
| 06/14/2005 | US6906594 Method and system for correcting non-linear response in amplifiers |
| 06/14/2005 | US6906593 Frequency compensation of wide-band resistive gain amplifier |
| 06/14/2005 | US6906592 Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics |
| 06/14/2005 | US6906591 Amplifier having MOS capacitor compensation |
| 06/14/2005 | US6906590 FET amplifier with temperature-compensating circuit |
| 06/14/2005 | US6906589 Multistaged amplification circuit |
| 06/14/2005 | US6906586 Differential amplifier circuit used in solid-state image pickup apparatus, and arrangement that avoids influence of variations of integrated circuits in manufacture and the like |
| 06/14/2005 | US6906585 Methods and apparatus for substantially reducing third order intermodulation distortion and other nonlinear distortions |
| 06/09/2005 | WO2005053155A1 Modified polar amplifier architecture |
| 06/09/2005 | WO2005053154A1 Multiple polar amplifier architecture |
| 06/09/2005 | WO2005053153A1 Power amplifier pre-distorter training |
| 06/09/2005 | WO2005053152A1 Predistortion control device and method, assembly including a predistortion control device |
| 06/09/2005 | WO2005053151A1 Variable supply amplifier system |
| 06/09/2005 | WO2005053150A2 An operational amplifier selecting one of inputs, and an amplifying apparatus using the op amplifier the verification method |
| 06/09/2005 | US20050125201 Data analyzer |
| 06/09/2005 | US20050124303 Compensating for load pull in electromagentic signal propagation using adaptive impedance matching |
| 06/09/2005 | US20050123066 Adaptive pre-distortion method and apparatus for digital rf transmitters |
| 06/09/2005 | US20050123064 Wireless communication unit linearised transmitter circuit and method of linearising therein |
| 06/09/2005 | US20050122183 Pulse width modulator circuit having negative bias |
| 06/09/2005 | US20050122173 Millimeter-wave unilateral low-noise amplifier |
| 06/09/2005 | US20050122172 Biased Darlington transistor pair, method, and system |
| 06/09/2005 | US20050122171 Power source circuit for high frequency power amplifying circuit and semiconductor integrated circuit for power source and electronics component for power source |
| 06/09/2005 | US20050122170 Op-amp configurable in a non-inverting mode with a closed loop gain greater than one with output voltage correction for a time varying voltage reference of the op-amp, and a method for correcting the output voltage of such an op-amp for a time varying voltage refer |
| 06/09/2005 | US20050122165 High efficiency power amplifier with multiple power modes |
| 06/09/2005 | US20050122164 Single chip power amplifier and envelope modulator |
| 06/09/2005 | US20050122163 EER modulator with power amplifier having feedback loop providing soft output impedance |
| 06/09/2005 | DE10392732T5 Signalkorrektur durch Vorverzerrung Signal correction by predistortion |
| 06/09/2005 | DE10392666T5 Vorverzerrungs-Steuerung Predistortion control |
| 06/09/2005 | DE10353790A1 Elektrische Baugruppe, insbesondere Gleichstromverstärker Electrical assembly, in particular direct current amplifier |
| 06/09/2005 | DE102004043241A1 Transimpedanzverstärker mit veränderbarer Ausgangsamplitude und weitem Eingangsdynamikbereich Transimpedance amplifier with adjustable output amplitude and wide input dynamic range |
| 06/09/2005 | DE102004038851A1 Monolithisch integrierter Leistungsverstärker Monolithic integrated power amplifier |
| 06/08/2005 | EP1538798A2 Wireless commmunication unit, linearised transmitter circuit and method of linearising therein |