| 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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| 11/20/2002 | CN1381093A Feedforward amplifier |
| 11/20/2002 | CN1381092A Distortion compensation apparatus |
| 11/20/2002 | CN1381091A Dynamic bias boosting circuit for power amplifier |
| 11/20/2002 | CN1380744A Controller of radio-frequency power generator for reducing sensitivity to cable length |
| 11/20/2002 | CN1380743A Off-centre compensation circuit and off-centre compensation method |
| 11/20/2002 | CN1380696A 半导体集成电路 The semiconductor integrated circuit |
| 11/19/2002 | US6483683 Overvoltage protection |
| 11/19/2002 | US6483386 Low voltage differential amplifier with high voltage protection |
| 11/19/2002 | US6483384 High speed amplifier |
| 11/19/2002 | US6483382 Current compensation circuit for improved open-loop gain in an amplifier |
| 11/19/2002 | US6483371 Universal temperature compensation application specific integrated circuit |
| 11/19/2002 | US6483365 Semiconductor device |
| 11/19/2002 | US6483168 Integrated circuit having resistor formed over emitter of vertical bipolar transistor |
| 11/14/2002 | WO2002091565A2 Signal amplifying method, signal amplifier and devices related therewith |
| 11/14/2002 | US20020168949 Arrangement and method relating to radio communication |
| 11/14/2002 | US20020168023 Transmitter for transmitting signals over radio channels and method for transmitting signals over radio channels |
| 11/14/2002 | US20020167454 Tunable dipole antenna |
| 11/14/2002 | US20020167451 Tunable waveguide antenna |
| 11/14/2002 | US20020167447 Tunable monopole antenna |
| 11/14/2002 | US20020167358 Power amplifier and communication device including power amplifier |
| 11/14/2002 | US20020167357 Differential amplifier comprising an unlocking device |
| 11/14/2002 | US20020167355 Low-noise gain switching circuit using tapped inductor |
| 11/14/2002 | US20020167344 Current amplifier structure |
| 11/13/2002 | EP1257053A1 Differential signal transfer circuit |
| 11/13/2002 | EP1256165A1 Low-voltage transconductance amplifier/filters |
| 11/13/2002 | CN1379867A Power supply circuit for composite bridge amplifier |
| 11/12/2002 | US6480705 Distortion compensation method and wireless communication apparatus |
| 11/12/2002 | US6480704 Method and arrangement for forming a transmission signal |
| 11/12/2002 | US6480465 AM transmitter having feed-forward correction to compensate for source impedance |
| 11/12/2002 | US6480066 Amplifiers |
| 11/12/2002 | US6480062 Reflection amplifier circuit |
| 11/12/2002 | US6479843 Single supply HFET with temperature compensation |
| 11/07/2002 | WO2002089371A1 Power division multiplexing with incoherent signals and fixed powder hierarchy |
| 11/07/2002 | WO2002089336A2 Analogue and digital signal processing |
| 11/07/2002 | WO2002089321A1 A signal processing circuit |
| 11/07/2002 | WO2002089320A1 High efficiency power amplifier |
| 11/07/2002 | WO2002089318A2 Signal processing apparatus |
| 11/07/2002 | WO2002089317A1 Device for controlling a closed circuit current for an amplification transistor and amplification circuit |
| 11/07/2002 | WO2002089315A2 Electrical signal pre-conditioning |
| 11/07/2002 | WO2002089314A2 Device for controlling a closed circuit current for an amplifier transistor and amplifier circuit |
| 11/07/2002 | WO2002088862A1 Amplifier system with on-demand power supply boost |
| 11/07/2002 | WO2002087973A1 Inserting apparatus and method with controlled, master cycle speed-dependent actuator operations |
| 11/07/2002 | WO2001069778A3 Method for determining the parameters of an n-gate |
| 11/07/2002 | US20020163478 Switched beam antenna architecture |
| 11/07/2002 | US20020163475 Tunable slot antenna |
| 11/07/2002 | US20020163458 Signal amplifying method, signal amplifier and devices related therewith |
| 11/07/2002 | US20020163407 Circuit and method for input side impedance matching of a power amplifier in an electronic device |
| 11/07/2002 | US20020163400 Tunable ferro-electric multiplexer |
| 11/07/2002 | US20020163387 System and method for converting from single-ended to differential signals |
| 11/07/2002 | US20020163386 Amplifying circuit |
| 11/07/2002 | US20020163385 Operation amplification circuit, constant voltage circuit and reference voltage circuit |
| 11/07/2002 | US20020163383 Instrumentation amplifier with improved AC common mode rejection performance |
| 11/07/2002 | DE10117563A1 Signalverarbeitung eines amplituden- und/oder phasenmodulierten Hochfrequenzsignals nach dem Prinzip des Envelope Elimination und Restoration Signal processing of an amplitude and / or phase-modulated radio frequency signal according to the principle of the Envelope Elimination and Restoration |
| 11/06/2002 | EP1255350A2 Signal amplifying method, signal amplifier and devices related therewith |
| 11/06/2002 | EP1254509A1 Lineariser |
| 11/06/2002 | EP1254508A1 System and method for auto-bias of an amplifier |
| 11/06/2002 | EP1254507A2 Circuit for reducing second and third order intermodulation distortion for a broadband rf amplifier |
| 11/06/2002 | EP1002363B1 Device for transforming into voltage signals weak electric currents impressed by a non-ideal electric current source at the inlet of same device |
| 11/06/2002 | EP0928515B1 Adaptive digital feed-forward correction of RF power amplifier |
| 11/06/2002 | EP0778998B1 A linearizer for linearizing a non-linear component controlled by control voltage |
| 11/06/2002 | CN1378338A Signal amplifying circuit having capacitor with top and bottom surface of different area |
| 11/06/2002 | CN1378337A Power amplifier for mobile communication apparatus |
| 11/06/2002 | CN1378086A Amplifier circuit for low voltage current detection |
| 11/06/2002 | CN1093998C Method for controlling radio signal power according to variation of frequency and temp. in paging signal-emission machine |
| 11/05/2002 | US6477477 Extended base band multicarrier system |
| 11/05/2002 | US6476680 Cascode amplifying circuit and folded cascode amplifying circuit |
| 11/05/2002 | US6476679 Semiconductor circuit with a stabilized gain slope |
| 11/05/2002 | US6476678 High performance amplifier circuits using separate power supplies |
| 11/05/2002 | US6476677 Power amplifier saturation detection and compensation |
| 11/05/2002 | US6476674 Method and apparatus for error correction of amplifier |
| 11/05/2002 | US6476672 Four phase level shift circuit for use in a push-pull amplifier |
| 11/05/2002 | US6476670 Amplifier measurement and modeling processes for use in generating predistortion parameters |
| 11/05/2002 | US6476668 Fast-setting, low power, jammer insensitive, biasing apparatus and method for single-ended circuits |
| 11/05/2002 | US6476646 Sense amplifier of semiconductor integrated circuit |
| 11/05/2002 | US6476621 Self-bootstrapping transducer interface |
| 11/05/2002 | US6476593 Method and circuit for compensation control of offset voltages of a radio receiving circuit integrated in a circuit module |
| 11/04/2002 | CA2384596A1 Signal amplifying method, signal amplifier and devices related therewith |
| 10/31/2002 | WO2002087097A1 Distortion compensating device |
| 10/31/2002 | WO2002087082A1 Tunable matching circuit |
| 10/31/2002 | WO2002087078A1 Feed-forward amplifier |
| 10/31/2002 | WO2002087077A1 Multistaged amplification circuit |
| 10/31/2002 | WO2002087074A2 Automatic optimization of linearity for envelope feedback rf amplifier linearization |
| 10/31/2002 | WO2002087073A2 An improved dc offset self-calibration system for a digital switching amplifier |
| 10/31/2002 | WO2002087072A2 Bias method and circuit for distortion reduction |
| 10/31/2002 | WO2002087016A1 Ferroelectric antenna and method for tuning same |
| 10/31/2002 | WO2002060051A9 High linearity circuits and methods regarding same |
| 10/31/2002 | US20020160715 Post-amplification linearization |
| 10/31/2002 | US20020159609 Audio power amplifying apparatus and method |
| 10/31/2002 | US20020158717 Tunable ferro-electric filter |
| 10/31/2002 | US20020158689 Controller-based radio frequency amplifier module and method |
| 10/31/2002 | US20020158688 Gain compensation circuit using a variable offset voltage |
| 10/31/2002 | US20020158686 Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor |
| 10/31/2002 | US20020158622 Error correction in amplifiers |
| 10/31/2002 | US20020158619 Satellite TWTA on-line non-linearity measurement |
| 10/31/2002 | CA2444700A1 Bias method and circuit for distortion reduction |
| 10/30/2002 | EP1253727A2 Radio frequency circuit and communications system |
| 10/30/2002 | EP1253709A2 Signal amplification device |
| 10/30/2002 | EP1253708A2 Distortion canceling circuit |
| 10/30/2002 | EP1252718A2 Ingrated rf power sensor that compensates for bias changes |
| 10/30/2002 | EP1252709A1 Method and system for compensating non-linearities and time-varying changes of a transfer function acting on an input signal |