| 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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| 06/09/2004 | EP1425851A1 Broadband amplifier system having improved linearity and minimum loss |
| 06/09/2004 | EP1425850A1 Circuits and methods for compensating switched mode amplifiers |
| 06/09/2004 | EP1425849A1 Calibration of an adaptive signal conditioning system |
| 06/09/2004 | EP1425848A2 Feed forward compensation circuit |
| 06/09/2004 | EP0932933B1 Multi-stage high efficiency linear power amplifier |
| 06/09/2004 | CN1504016A Power amplifier saturation detection and compensation |
| 06/09/2004 | CN1503591A Front-end module and communication terminal |
| 06/09/2004 | CN1503450A Limiting amplifier for PSD photoelectric signal |
| 06/09/2004 | CN1503401A Matching unit |
| 06/09/2004 | CN1153388C Radio transmitter installation with low-power consumption |
| 06/08/2004 | US6748312 Safe distance algorithm for adaptive cruise control |
| 06/08/2004 | US6747531 Circuit and method for input side impedance matching of a power amplifier in an electronic device |
| 06/08/2004 | US6747517 Power-shifting rf amplifiers |
| 06/08/2004 | US6747512 Amplifier and tuner |
| 06/08/2004 | US6747307 Combined transistor-capacitor structure in deep sub-micron CMOS for power amplifiers |
| 06/08/2004 | CA2285355C Pulse referenced control method for enhanced power amplification of a pulse modulated signal |
| 06/03/2004 | WO2004047351A2 Radio frequency power amplifier adaptive bias control circuit |
| 06/03/2004 | WO2004047299A1 Current-limiting circuit employing duty cycle control |
| 06/03/2004 | WO2004047288A1 Travelling-wave amplifier |
| 06/03/2004 | WO2004047287A1 Power amplifying apparatus |
| 06/03/2004 | WO2004047286A1 Pulse modulated power converter |
| 06/03/2004 | WO2004047285A1 Apparatus and method for improving efficiency of power amplifier operating under large peak-to-average power ratio |
| 06/03/2004 | WO2003090343A3 Power amplifier |
| 06/03/2004 | WO2003034576A3 Method and system for charge pump active gate drive |
| 06/03/2004 | US20040106385 Dynamic bias for RF power amplifiers |
| 06/03/2004 | US20040105511 Low power CDMA receiver |
| 06/03/2004 | US20040105510 Digital predistortion system for linearizing a power amplifier |
| 06/03/2004 | US20040105509 Digitally convertible radio |
| 06/03/2004 | US20040104777 Cascoded power amplifier, particularly for use in radio frequency |
| 06/03/2004 | US20040104776 Voltage amplification circuit |
| 06/03/2004 | US20040104775 High linearity digital variable gain amplifier |
| 06/03/2004 | US20040104774 Operational amplifier having large output current with low supply voltage |
| 06/03/2004 | US20040104773 Feed-forward-back suppressed noise circuits |
| 06/03/2004 | US20040104770 Method and apparatus for increasing the efficiency of a transmitter |
| 06/03/2004 | US20040104768 Apparatus, methods and articles of manufacture for multiband signal processing |
| 06/03/2004 | DE10005440B4 Verfahren zum energiesparenden Betrieb eines Mobilfunkgerätes und Mobilfunkgerät zum Durchführen des Verfahrens A method for energy-saving operation of a mobile device and mobile device for carrying out the method |
| 06/02/2004 | EP1424772A2 High linearity variable gain amplifier |
| 06/02/2004 | EP1424771A1 Cascode power amplifier particularly for use in radiofrequency applications |
| 06/02/2004 | EP1423912A1 Circuitry for creating a spectral null in a differential output switching amplifier and method therefor |
| 06/02/2004 | EP1423911A1 Power amplifier having a cascode current-mirror self-bias boosting circuit |
| 06/02/2004 | CN1501654A Method and apparatus for reduction of distortion in a feed forward amplifier |
| 06/02/2004 | CN1501578A Signal amplifier employing DOHERTY amplifier |
| 06/01/2004 | US6744327 Tunable voltage controlled oscillator |
| 06/01/2004 | US6744324 Frequency synthesizer using a VCO having a controllable operating point, and calibration and tuning thereof |
| 06/01/2004 | US6744322 High performance BiFET low noise amplifier |
| 06/01/2004 | US6744321 Bias control circuit for power amplifier |
| 06/01/2004 | US6744320 Variable transconductane variable gain amplifier utilizing a degenerated differential pair |
| 06/01/2004 | US6744318 Digital power amplifier |
| 06/01/2004 | US6744317 Digital linearizer of high power amplifier and digital linearizing method |
| 06/01/2004 | US6744316 Method and apparatus far reduction of distortion in a transmitter |
| 06/01/2004 | US6744315 Transmission amplifier |
| 06/01/2004 | US6744314 Wideband power amplifier linearization technique |
| 06/01/2004 | US6744310 Power amplifying device |
| 06/01/2004 | US6744294 Cascode signal driver with low harmonic content |
| 06/01/2004 | US6744284 Receiver circuit of semiconductor integrated circuit |
| 05/27/2004 | WO2004045226A2 Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics |
| 05/27/2004 | WO2004045091A2 Rf circuit with frequency agile sequential amplifiers |
| 05/27/2004 | WO2004045070A1 Improved rf transistor amplifier linearity using suppressed third order transconductance |
| 05/27/2004 | WO2004045068A1 Method for the generation of a high-frequency ac voltage and corresponding high-frequency power amplifier |
| 05/27/2004 | WO2004045067A1 Distortion compensation circuit, distortion compensation signal generating method, and power amplifier |
| 05/27/2004 | WO2004045066A1 Method and device for training an rf amplifier linearization device, and mobile terminal incorporating same |
| 05/27/2004 | WO2004045065A2 Accurate power detection for a multi-stage amplifier |
| 05/27/2004 | WO2003061114A3 Methods of optimising power amplifier efficiency and closed-loop power amplifier controllers |
| 05/27/2004 | WO2003038993A3 Method and apparatus for automated current balance adjustment for parallel combined amplification elements |
| 05/27/2004 | WO2002084684A3 Tunable planar capacitor |
| 05/27/2004 | US20040100341 Mems-tuned high power, high efficiency, wide bandwidth power amplifier |
| 05/27/2004 | US20040100330 Radio frequency feedback amplifier circuits |
| 05/27/2004 | US20040100329 Single-ended differential circuit using complementary devices |
| 05/27/2004 | US20040100327 Radio frequency power amplifier active self-bias compensation circuit |
| 05/27/2004 | US20040100326 Method and apparatus for controlling an amplifier |
| 05/27/2004 | US20040100323 Systems and methods of dynamic bias switching for radio frequency power amplifiers |
| 05/27/2004 | DE10296941T5 Verfahren und Vorrichtung zur Korrektur der Signalverzerrung Method and apparatus for correcting the signal distortion |
| 05/27/2004 | DE10252146A1 Method for generating high-frequency AC voltage, involves damping unwanted parasitic oscillation circuits with low-frequency resonance frequencies |
| 05/27/2004 | DE10251702A1 Difference amplifier e.g. for signal processing, has emitters of amplifier transistors connected together via NTC compensation resistance |
| 05/27/2004 | CA2504618A1 Method and device for training an rf amplifier linearization device, and mobile terminal incorporating same |
| 05/26/2004 | EP1422823A2 Matching unit with switching means for VHF/UHF bands |
| 05/26/2004 | EP1422653A2 Electro-optical sensor |
| 05/26/2004 | EP1422533A1 Radar receiver and radar system |
| 05/26/2004 | EP1421681A1 Thermally distributed darlington amplifier |
| 05/26/2004 | EP1421680A1 Pre-distortion using a by-pass signal |
| 05/26/2004 | EP1421679A2 High frequency power amplifier circuit |
| 05/26/2004 | EP1421678A2 Switching power supply for rf power amplifiers |
| 05/26/2004 | EP1040569A4 Feed forward amplifier with digital intermodulation control |
| 05/26/2004 | CN1500307A Current mirror compensation system for power amplifiers |
| 05/26/2004 | CN1499711A 电压放大电路 Voltage amplifier circuit |
| 05/26/2004 | CN1499328A Current leakage compensator and its compensating method |
| 05/25/2004 | US6741867 Non-linear distortion compensation circuit, transmitter device to be employed in the same and mobile communication unit |
| 05/25/2004 | US6741840 RF transmitters with saturation detection and correction and methods therefor |
| 05/25/2004 | US6741663 Linearization method for amplifier, and amplifier arrangement |
| 05/25/2004 | US6741662 Transmitter linearization using fast predistortion |
| 05/25/2004 | US6741217 Tunable waveguide antenna |
| 05/25/2004 | US6741211 Tunable dipole antenna |
| 05/25/2004 | US6741140 Circuit for receiving an AC coupled broadband signal |
| 05/25/2004 | US6741134 DC feedback control circuit |
| 05/25/2004 | US6741132 Low noise level differential amplifier |
| 05/25/2004 | US6741130 High-speed output transconductance amplifier capable of operating at different voltage levels |
| 05/25/2004 | US6741128 Distortion canceling circuit |
| 05/25/2004 | US6741127 High-frequency amplifier circuit and radio communication apparatus using same |
| 05/25/2004 | US6741125 High frequency power amplifier and wireless communication module |
| 05/25/2004 | CA2289187C Pilot signal detection system using band reject filter |