| 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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| 02/07/2002 | US20020014920 High frequency power amplifier |
| 02/07/2002 | US20020014919 Electrical arrangement having improved feedback stability |
| 02/07/2002 | US20020014916 Silent start |
| 02/07/2002 | US20020014913 Temperature compensated reference voltage circuit |
| 02/07/2002 | US20020014910 Circuit for providing a constant current |
| 02/07/2002 | US20020014904 Semiconductor device |
| 02/06/2002 | EP1178602A1 Improved amplifier gain-boosting circuit |
| 02/06/2002 | EP1177629A2 Output buffer with independently controllable current mirror legs |
| 02/06/2002 | EP1177620A1 Compensation mechanism for compensating bias levels of an operation circuit in response to supply voltage changes |
| 02/06/2002 | EP1177619A1 Signal treating circuit with a class a/b output stage connectable to a source of multiple supply voltages |
| 02/06/2002 | CN1334987A Level shift circuit |
| 02/06/2002 | CN1078978C Linearized circuit for linearizing non-linear componnet controlled by control voltage |
| 02/05/2002 | US6344811 Power supply compensation for noise shaped, digital amplifiers |
| 02/05/2002 | US6344775 Semiconductor device |
| 02/04/2002 | CA2352369A1 Power amplifier sharing in a wireless communication system with transmit diversity |
| 01/31/2002 | WO2002009277A2 Negative feedback gain control for common electrode transistor |
| 01/31/2002 | WO2002009274A1 Low noise, low distortion, complementary if amplifier |
| 01/31/2002 | WO2002009273A1 Schemes for maximizing efficiency of power amplifier under power backoff conditions and reducing transmit-band noise floor and adjacent channel power |
| 01/31/2002 | WO2002009272A2 High-frequency amplifier circuit with independent control of quiescent current and bias impedance |
| 01/31/2002 | WO2001082470A3 Voltage limiting bias circuit for reduction of hot electron degradation effects in mos cascode circuits |
| 01/31/2002 | WO2000048309A3 Method and apparatus for digitally linearising an amplifier |
| 01/31/2002 | US20020012404 Predistortion linearizer and method thereof |
| 01/31/2002 | US20020011899 Audio amplifier power and temperature controller having network detecting and associated methods |
| 01/31/2002 | US20020011898 Amplification circuit for electric charge type sensor |
| 01/31/2002 | US20020011890 Semiconductor integrated circuit |
| 01/31/2002 | DE10129850A1 Amplifier with frequency characteristic compensating reactance has current-inverting negative impedance converter containing broadband amplifier element with feedback |
| 01/31/2002 | DE10034987A1 Electronic amplifier with feedback has part of output signal back to linearize frequency characteristic, reduce distortion; not all, but at least one output stage has feedback line to amplifier |
| 01/30/2002 | EP1176777A2 Predistortion of quadrature signals |
| 01/30/2002 | EP1176775A1 Low voltage broadband line driver |
| 01/30/2002 | EP1176711A2 Apparatus and method for electrical signal amplification |
| 01/30/2002 | EP1176710A2 A predistortion circuit |
| 01/30/2002 | EP1175732A1 System and method for selectively controlling amplifier performance |
| 01/30/2002 | EP1175726A1 Method and apparatus for controlling the common mode impedance misbalance of an isolated single-ended circuit |
| 01/30/2002 | EP1175725A1 Adaptive linearizer for rf power amplifiers |
| 01/30/2002 | EP0834217B1 Process for controlling the power of the transmission amplifier of radio equipment |
| 01/30/2002 | CN1333944A Gate biasing arrangement |
| 01/30/2002 | CN1333635A Method and device for amplifying transmission power |
| 01/29/2002 | US6342816 Voltage limiting bias circuit for reduction of hot electron degradation effects in MOS cascode circuits |
| 01/29/2002 | US6342815 Manufacturable HBT power distributed amplifier for wideband telecommunications |
| 01/29/2002 | US6342814 Operational amplifier |
| 01/29/2002 | US6342813 Variable gain amplifier |
| 01/29/2002 | US6342812 Power amplification system for low power radio frequency signals |
| 01/29/2002 | US6342810 Predistortion amplifier system with separately controllable amplifiers |
| 01/29/2002 | US6342809 Closed loop circuit switch mode power amplifier |
| 01/24/2002 | WO2001080471A3 Transmitter linearization using fast predistortion |
| 01/24/2002 | US20020010567 Distortion compensation method and apparatus |
| 01/24/2002 | US20020009980 Bias circuit and radio communication apparatus using same |
| 01/24/2002 | US20020009979 Distortion-compensating apparatus |
| 01/24/2002 | US20020008583 Distributed amplifier with terminating circuit capable of improving gain flatness at low frequencies |
| 01/24/2002 | US20020008579 Carrier-blanking mechanism for sweeping detector used to measure and correct RF power amplifier distortion |
| 01/24/2002 | US20020008578 Amplifier measurement and modeling processes for use in generating predistortion parameters |
| 01/24/2002 | US20020008577 High linearity multicarrier RF amplifier |
| 01/24/2002 | US20020008576 Transmission power amplification method and apparatus |
| 01/24/2002 | US20020008575 Method and system for efficiently transmitting energy from an rf device |
| 01/24/2002 | US20020008574 Apparatus and method for efficiently amplifying wideband envelope signals |
| 01/24/2002 | US20020008562 Operational amplifier and its offset cancel circuit |
| 01/24/2002 | US20020008553 High frequency circuit |
| 01/24/2002 | US20020008550 Sense amplifier of semiconductor integrated circuit |
| 01/24/2002 | US20020008543 Load capacitance measuring circuit and output buffer adaptive to wide range of load capacitance |
| 01/24/2002 | US20020008251 Output stage for high-speed comparator circuits |
| 01/23/2002 | EP1175090A1 Signal transfer circuitry with offset correction |
| 01/23/2002 | CN1332923A Power 1-Q modulation systems and methods |
| 01/23/2002 | CN1332518A Amplifier |
| 01/22/2002 | US6341046 Current biasing voltage sensing preamplifier for magnetoresistive heads |
| 01/22/2002 | US6340917 Broad frequency band linearization device |
| 01/22/2002 | US6340916 Ransimpedance amplifier circuit |
| 01/22/2002 | US6340915 Feed forward amplifier |
| 01/22/2002 | US6340914 Pilot-assisted amplifier linearization circuit |
| 01/22/2002 | CA2279031C Sweep pilot technique for a control system that reduces distortion produced by electrical circuits |
| 01/22/2002 | CA2244720C Charge sensitive amplifier with high common mode signal rejection |
| 01/17/2002 | WO2002005422A1 An electrical arrangement having improved feedback stability |
| 01/17/2002 | WO2002005421A1 Transmitter including a composite amplifier |
| 01/17/2002 | WO2002005420A1 Transmitter including a composit amplifier |
| 01/17/2002 | WO2002005418A2 Power amplifier with multiple power supplies |
| 01/17/2002 | WO2002005053A2 Circuit for providing a constant current |
| 01/17/2002 | WO2001041297A3 Distortion reduction |
| 01/17/2002 | US20020005761 Semiconductor circuit with a stabilized gain slope |
| 01/17/2002 | US20020005760 Variable gain amplifier circuit and gain control method |
| 01/17/2002 | US20020005755 Method and apparatus for optimum biasing of cascaded mosfet radio-frequency devices |
| 01/17/2002 | US20020005754 Charge-type sensor amplifying circuit |
| 01/17/2002 | US20020005749 Method for generating a substantially temperature independent current and device allowing implementation of the same |
| 01/17/2002 | DE10031522A1 Frequency compensated, multistage amplifier design, includes inverting chopper modulator operating in phase with separate Miller feedback capacitors |
| 01/17/2002 | DE10031521A1 Integrierter Schaltkreis mit einem Analogverstärker An integrated circuit comprising an analog amplifier |
| 01/17/2002 | DE10031190A1 Compensation circuit for an operational amplifier includes regulator system with selective compensation elements |
| 01/16/2002 | EP1172929A1 Low noise amplifier arrangement especially for cellular mobile telephone |
| 01/16/2002 | EP1171950A1 System and method for converting from single-ended to differential signals |
| 01/16/2002 | CN1331864A Radio frequency transmitters |
| 01/16/2002 | CN1078020C Out-of-band compensation for non-linear device |
| 01/15/2002 | US6339701 Method and apparatus for extending the dynamic range of a frequency mixer |
| 01/15/2002 | US6339361 Power amplifier driver system for wireless handset |
| 01/10/2002 | WO2002003602A1 Digital broadcast transmission with system monitor and display |
| 01/10/2002 | WO2002003546A1 High-frequency amplifier |
| 01/10/2002 | WO2002003545A1 High-frequency amplifier |
| 01/10/2002 | WO2002003544A1 High-frequency amplifier |
| 01/10/2002 | WO2002003543A1 High-frequency amplifier |
| 01/10/2002 | WO2002003541A2 Digitally modulated rf amplifier system having reduced intermodulation energy at rf channel edges |
| 01/10/2002 | WO2001073941A3 Dynamic bias boosting circuit for a power amplifier |
| 01/10/2002 | WO2001048911A3 Locally-adapted parallel t-spaced linear predistorter |
| 01/10/2002 | WO2001037421A3 High efficiency power amplifier |
| 01/10/2002 | US20020003451 Two-stage amplifier |