| 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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| 04/15/2008 | US7358829 Transmission apparatus, communication apparatus and mobile radio apparatus |
| 04/15/2008 | US7358804 Amplifier turn-on speedup technique |
| 04/15/2008 | US7358802 Multi-phase techniques for tuning and/or measuring operations of an amplifier |
| 04/15/2008 | US7358801 Reducing noise and/or power consumption in a switched capacitor amplifier sampling a reference voltage |
| 04/10/2008 | WO2008043098A2 System and method for on-chip im3 reduction over a broad range of operating powers |
| 04/10/2008 | WO2008041948A1 A low noise amplifier circuit with noise cancellation and increased gain |
| 04/10/2008 | WO2008041063A1 Bias circuit and method for biasing a transistor in a class c amplifier |
| 04/10/2008 | WO2008040913A1 Method and device for digital precorrection of a multichannel signal |
| 04/10/2008 | US20080084246 Bias circuit with increased power supply rejection |
| 04/10/2008 | US20080084244 Method And System For Linearizing The Characteristic Curve Of A Power Amplifier |
| 04/09/2008 | EP1908167A1 Compensation for parasitic coupling between rf or microwave transistors in the same package |
| 04/09/2008 | EP1908166A1 Reconfigurable transmitter |
| 04/09/2008 | EP1597822B1 Data transmission method, base station and transmitter |
| 04/09/2008 | EP1264410B1 Device for linearising a high-frequency amplifier |
| 04/09/2008 | CN100380823C Blind cancellation of cross-modulation by addition of modulated signal |
| 04/08/2008 | US7356315 Outphasing modulators and methods of outphasing modulation |
| 04/08/2008 | US7355479 Neutralization of feedback capacitance in amplifiers |
| 04/08/2008 | US7355475 Output circuit of vacuum-tube amplifier |
| 04/08/2008 | US7355472 Method and device for correcting signal distortions in an amplifier device |
| 04/08/2008 | US7355471 Circuit for DC offset cancellation |
| 04/03/2008 | WO2008039781A2 Asymmetric rise/fall time and duty cycle control circuit |
| 04/03/2008 | WO2008039594A1 Signal processing method and power amplifier device |
| 04/03/2008 | WO2008039503A2 Broadband low noise amplifier |
| 04/03/2008 | US20080079499 Power amplifier and method thereof |
| 04/03/2008 | US20080079494 Broadband low noise amplifier |
| 04/03/2008 | US20080079490 Asymmetric rise/fall time and duty cycle control circuit |
| 04/03/2008 | DE19654295B4 Steuerschaltung zur Rauschunterdrückung Control circuit for noise reduction |
| 04/03/2008 | DE102007046047A1 Leistungsverstärker Power amplifier |
| 04/03/2008 | DE102006043902A1 Stromwandler, Frequenzmischer und Verfahren zur Frequenzmischung Current transformer, frequency mixers and frequency mixing method |
| 04/02/2008 | EP1905151A2 A linear power efficient radio frequency (rf) driver system and method with power level control |
| 04/02/2008 | EP1066679B1 Method and circuit for controlling the compensation of offset voltages of a radio receiver circuit which is integrated in a circuit module |
| 04/02/2008 | CN101154927A Low-drifting voltage operational amplifier and method for reducing drifting voltage |
| 04/02/2008 | CN101154926A Amplifier circuit with multiple power supplies |
| 04/02/2008 | CN101154925A Radio-frequency differential-to-single-ended converter |
| 04/02/2008 | CN101154923A Driving circuit of power amplifier |
| 04/02/2008 | CN100378996C Semiconductor integrated circuit |
| 04/01/2008 | US7353005 Wireless communication unit and linearised transmitter circuit therefor |
| 04/01/2008 | US7352548 Composite integrated semiconductor device |
| 04/01/2008 | US7352243 Voltage comparator circuit |
| 04/01/2008 | US7352238 dB-linear analog variable gain amplifier (VGA) realization system and method |
| 04/01/2008 | US7352231 Method and circuit for perturbing removable singularities in coupled translinear loops |
| 04/01/2008 | CA2289212C Active phase splitter |
| 03/27/2008 | WO2008035480A1 Low noise amplifier and wireless communication system |
| 03/27/2008 | WO2008035439A1 Distortion compensating circuit and method for controlling the same |
| 03/27/2008 | WO2008035396A1 Power amplifying apparatus |
| 03/27/2008 | US20080074190 Scheme for improving settling behavior of gain boosted fully differential operational amplifier |
| 03/27/2008 | US20080074186 An Arrangement And A Method Relating To Signal Predistortion |
| 03/27/2008 | DE102007040861A1 Verstärkeranordnung und Verfahren zum Verstärken eines Signals An amplifier arrangement and method for amplifying a signal |
| 03/27/2008 | DE102007026021A1 Systeme, Verfahren und Vorrichtungen für orthogonale rekursive Mehrwege-Vorverzerrung Systems, methods and apparatus for orthogonal recursive multi-path predistortion |
| 03/26/2008 | EP1903737A1 Modulation scheme adaptation in single carrier wireless communication systems |
| 03/26/2008 | EP1903672A2 Three-stage amplifier |
| 03/26/2008 | EP1576725A4 Thermal feedback for switch mode amplification |
| 03/26/2008 | EP1411632B1 High frequency power amplifier and wireless communication system |
| 03/26/2008 | EP1330870B1 Method and apparatus for controlling an amplifier |
| 03/26/2008 | CN101151799A Amplifier apparatus |
| 03/26/2008 | CN101151798A Amplifier apparatus |
| 03/26/2008 | CN101150329A Radio transceiver bias circuit |
| 03/26/2008 | CN101150298A Muting circuit |
| 03/26/2008 | CN101150296A A low-noise amplifier for radio communication and navigation receiver and its realization method |
| 03/26/2008 | CN100377494C 电路 Circuit |
| 03/25/2008 | USRE40168 Low power circuit with proper slew rate by automatic adjustment of bias current |
| 03/25/2008 | US7349490 Additive digital predistortion system employing parallel path coordinate conversion |
| 03/25/2008 | US7348851 Miller-compensated amplifier |
| 03/25/2008 | US7348850 Electronic circuit for amplification of a bipolar signal |
| 03/25/2008 | US7348846 Amplifier arrangement |
| 03/25/2008 | US7348845 System and method for employing variable magnetic flux bias in an amplifier |
| 03/25/2008 | US7348844 Adaptive digital pre-distortion system |
| 03/25/2008 | US7348843 Predistortion linearizer using cascaded lower-order linearizers |
| 03/25/2008 | US7348842 Multi-substrate RF module for wireless communication devices |
| 03/25/2008 | US7348841 Multiple power mode amplifier with bias modulation option and without bypass switches |
| 03/25/2008 | US7348840 Feedback controller for PWM amplifier |
| 03/25/2008 | US7348839 Method and apparatus for DC offset cancellation in amplifiers |
| 03/25/2008 | US7348833 Bias circuit having transistors that selectively provide current that controls generation of bias voltage |
| 03/20/2008 | WO2008032763A1 Amplification circuit, amplification circuit noise reducing method and program thereof |
| 03/20/2008 | WO2008032264A2 Amplifier architecture for polar modulation |
| 03/20/2008 | WO2008031454A1 Method of control slope regulation and control slope regulation apparatus |
| 03/20/2008 | WO2008002787A3 Dynamic performance control of broadband tuner |
| 03/20/2008 | US20080068086 High frequency power amplifier circuit and electronic component for high frequency power amplifier |
| 03/20/2008 | US20080068080 Spectrum Analyzing Method, Distortion Detector and Distortion Compensation Amplifying Device |
| 03/20/2008 | US20080068077 Unilateral Feedback Power Amplifier and Method for Realizing the Same |
| 03/20/2008 | US20080068076 Impedance matched variable gain low noise amplifier using shunt feed-back |
| 03/19/2008 | EP1901424A1 Circuit for suppressing power-up noises |
| 03/19/2008 | EP1900101A2 Switched capacitor system with and method for output glitch reduction |
| 03/19/2008 | EP1552618A4 Low noise switching voltage regulator |
| 03/19/2008 | CN201039094Y A high-gain RF low-noise amplifier |
| 03/19/2008 | CN201039091Y A signal output resistance distortion open loop feedback compensation device |
| 03/19/2008 | CN201039090Y Front feedback power amplification device for realizing self-adapted control based on pure hardware circuit |
| 03/19/2008 | CN201039089Y RF front feedback power amplifier |
| 03/19/2008 | CN201039088Y Amplifier structure and its amplifier system |
| 03/19/2008 | CN201039087Y An onboard power amplification circuit |
| 03/19/2008 | CN201039086Y Low-noise high-frequency amplifier |
| 03/19/2008 | CN101147424A Offset correction circuit for voltage-controlled current source |
| 03/19/2008 | CN101147319A Variable bandwidth envelope modulator for use with envelope elimination and restoration transmitter architecture and method |
| 03/19/2008 | CN101145765A Dynamically accelerated operational amplifier and method thereof |
| 03/19/2008 | CN101145762A Amplifier and method for adding bandwidth via current injection |
| 03/19/2008 | CN101145761A Power amplifier temperature compensation device and method |
| 03/18/2008 | US7346600 Data analyzer |
| 03/18/2008 | US7346322 Receiver including linearity compensation in the receive band |
| 03/18/2008 | US7346318 High frequency power amplifier component and radio communication system |
| 03/18/2008 | US7345540 Amplifier circuit having a compensating amplifier unit for improving loop gain and linearity |