| 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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| 05/12/2009 | US7532427 TMR/GMR amplifier with input current compensation |
| 05/12/2009 | US7532076 Operational amplifier |
| 05/12/2009 | US7532066 Bias network with stable transient response |
| 05/12/2009 | US7532065 Analog amplifier having DC offset cancellation circuit and method of offset cancellation for analog amplifiers |
| 05/12/2009 | CA2488472C Digital memory-based predistortion technique |
| 05/07/2009 | WO2007056315A3 Power conversion regulator with exponentiating feedback loop |
| 05/07/2009 | US20090115528 Low Cost High Performance Power Amplifier Utilizing Two-Stage-Included Local Negative Feedback with Feedback-Shifting Technology |
| 05/07/2009 | US20090115525 Frequency tunable low noise amplifier |
| 05/07/2009 | US20090115522 Low power, low noise amplifier system |
| 05/07/2009 | US20090115520 Temperature compensation of collector-voltage control RF amplifiers |
| 05/07/2009 | US20090115513 Predistorter |
| 05/07/2009 | US20090115511 Audio amplifier |
| 05/07/2009 | US20090115507 Method of and apparatus for reducing settling time of a switched capacitor amplifier |
| 05/07/2009 | US20090115506 Interface device and information processing system |
| 05/07/2009 | DE102007051853A1 Electronic circuit for transimpedance amplifier for conversion of current in adequate output voltage, comprises semiconductor component, which operates as diode attached at high impedance potential vertex in electronic circuit |
| 05/07/2009 | DE102005010643B4 Stromsparende differenzielle Breitbandtreiberschaltung Electric saving differential wideband driver circuit |
| 05/07/2009 | DE10114732B4 Verfahren zur aktiven Rauschunterdrückung unter Verwendung der Analyse unabhängiger Komponenten Method for active noise cancellation using independent component analysis |
| 05/06/2009 | EP2056479A1 Transmission circuit and communication apparatus |
| 05/06/2009 | EP2056460A1 Method and arrangement for a measurement amplifier to correct input signals |
| 05/06/2009 | EP2056451A2 Efficient power amplifier |
| 05/06/2009 | EP2056449A2 Amplifier |
| 05/06/2009 | EP2056448A2 Low noise amplifier and differential amplifier |
| 05/06/2009 | EP2056100A1 Gas sensor control device |
| 05/06/2009 | EP2055013A2 Adaptive predistortion for controlling an open loop power amplifier |
| 05/06/2009 | EP2055002A1 Electronic device for self oscillating class d system |
| 05/06/2009 | EP2055000A2 Buffer device for switched capacity circuit |
| 05/06/2009 | EP1614224A4 Additive digital predistortion system employing parallel path coordinate conversion |
| 05/06/2009 | CN101427462A Automatic gain controlled circuit and low noise amplifier circuit |
| 05/06/2009 | CN101427460A Output networks in combination with LINC technique |
| 05/06/2009 | CN101427459A Method and arrangement for optimizing efficiency of a power amplifier |
| 05/06/2009 | CN101425782A Predistorter |
| 05/06/2009 | CN101425781A Audio power amplifying apparatus |
| 05/06/2009 | CN101425780A Low-noise wide-band amplifier circuit |
| 05/06/2009 | CN100486116C A/D converter |
| 05/06/2009 | CN100486112C Gain control circuit and relevant gain amplifier |
| 05/06/2009 | CN100486110C Temperature compensation attenuator |
| 05/06/2009 | CN100486109C Voltage generating circuit |
| 05/06/2009 | CN100486108C Sub-micron self-biased cascode power amplifier |
| 05/06/2009 | CN100486107C Method and device for self-adaptive regulation of power amplifier offset voltage |
| 05/06/2009 | CN100486106C Amplifier and method of controlling same |
| 05/05/2009 | US7529053 TMR/GMR amplifier with input current compensation |
| 05/05/2009 | US7528677 Temperature compensation attenuator |
| 05/05/2009 | US7528655 Amplifier with improved compensation topology and related amplifier circuit, system, and method |
| 04/30/2009 | WO2009054765A1 Improved amplifying device |
| 04/30/2009 | WO2009054096A1 Distribution type amplification device and amplifier |
| 04/30/2009 | WO2009027916A3 Integrated doherty amplifier |
| 04/30/2009 | WO2009000236A3 High-dynamic ammeter with small time constant |
| 04/30/2009 | WO2008155610A3 Power amplifier time-delay invariant predistortion methods and apparatus |
| 04/30/2009 | WO2008070321A3 Rf system linearizer using controlled complex nonlinear distortion generators |
| 04/30/2009 | WO2007034476A3 A device and method for detecting an epileptic event |
| 04/30/2009 | WO2004068700A9 High linearity low noise amplifier |
| 04/30/2009 | US20090113511 Distortion and noise canceling system for hfc networks |
| 04/30/2009 | US20090110409 High sensitivity two-stage amplifier |
| 04/30/2009 | US20090108940 Amplifier |
| 04/30/2009 | US20090108938 Circuit and method for dynamic current compensation |
| 04/30/2009 | US20090108933 Compensation For Amplifiers Driving A Capacitive Load |
| 04/30/2009 | US20090108929 Apparatuses and methods for providing offset compensation for operational amplifier |
| 04/29/2009 | EP2053738A1 Amplifier with adjustable frequency band |
| 04/29/2009 | EP2052456A1 Integrator and error amplifier |
| 04/29/2009 | EP1678819B1 Method and apparatus for realizing a low noise amplifier |
| 04/29/2009 | CN201230300Y Last stage four path amplifier for CDMA base station system power amplifier |
| 04/29/2009 | CN101421916A Doherty amplifier |
| 04/29/2009 | CN101420208A Variable gain amplifier including series-coupled cascode amplifiers |
| 04/29/2009 | CN101420204A Low noise amplifier circuit |
| 04/29/2009 | CN101420203A Low-noise amplifier circuit |
| 04/29/2009 | CN100483938C Circuit having source follower and semiconductor device having the circuit |
| 04/29/2009 | CN100483936C Differential amplifier circuit and method for controlling differential amplifier circuit |
| 04/29/2009 | CN100483933C Field emission RF amplifier |
| 04/29/2009 | CN100483932C Systems and methods for protection of audio amplifier circuits |
| 04/29/2009 | CN100483931C Heat protective system of amplifier output stage |
| 04/29/2009 | CN100483930C Load-invariant amplifier |
| 04/29/2009 | CN100483929C Amplifier, information communication apparatus and amplification method |
| 04/29/2009 | CN100483928C Amplifier having switchable negative feedback |
| 04/29/2009 | CN100483927C Comparator |
| 04/29/2009 | CN100483926C Differential amplifier device, 2-stage amplifier device, and analog/digital converter device |
| 04/29/2009 | CN100483922C Efficient modulation of RF signals |
| 04/29/2009 | CN100483288C Quiescent current control circuit for high-power amplifiers |
| 04/28/2009 | US7526260 Apparatus, methods and articles of manufacture for linear signal modification |
| 04/28/2009 | US7526259 Radio frequency circuit and communication system with power amplifier control |
| 04/28/2009 | US7526006 Laser power control circuit |
| 04/28/2009 | US7525390 Circuit for converting a differential signal into a non-differential signal, and RF transmitter comprising such a circuit |
| 04/28/2009 | US7525389 Signal amplifier circuit with a limiting voltage device |
| 04/28/2009 | US7525381 Amplifier structures that enhance transient currents and signal swing |
| 04/28/2009 | US7525377 Method for controlling a linear power amplifier |
| 04/28/2009 | US7525376 Power amplifier with output voltage compensation |
| 04/28/2009 | US7525375 Method of correcting the output signal of an analog amplifier, amplifier module and measuring device |
| 04/23/2009 | WO2009050537A1 Method and system of adaptive predistortion of a wireless transmitter |
| 04/23/2009 | WO2009049400A1 A system and method for a single chip direct conversion transceiver in silicon |
| 04/23/2009 | WO2007050961A3 Operational amplifier with zero offset |
| 04/23/2009 | US20090102592 Multi-Primary Distributed Active Transformer Amplifier Power Supply and Control |
| 04/23/2009 | US20090102563 Transimpedance amplifier |
| 04/23/2009 | US20090102561 Amplifier having an output protection, in particular operational amplifier for audio application |
| 04/23/2009 | US20090102551 Operational amplifier with improved current monitoring and scalable output |
| 04/23/2009 | US20090102484 Bandwidth expansion in magnetic resonance |
| 04/23/2009 | DE19882089B4 Verstärker zur kontinuierlichen schmalbandigen Signalverstärkung mit hohem Verstärkungsfaktor und Verstärkungsverfahren Continuous narrow-band amplifier for signal amplification with a high gain and amplification method |
| 04/23/2009 | DE102008046566A1 Integrierter Schaltkreis, Differenzverstärker und CMOS-Verstärker An integrated circuit differential amplifier and CMOS amplifier |
| 04/22/2009 | EP2051390A2 A radio transmission apparatus |
| 04/22/2009 | EP2051371A1 Systems, methods and devices for dual closed loop modulation controller for non-linear RF amplifier |
| 04/22/2009 | EP2051370A2 RF power amplifier apparatus and power supply circuit for controlling power-supply voltage to RF power amplifier |
| 04/22/2009 | CN201226507Y Power amplification circuit for power line carrier communication |