| 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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| 02/12/1998 | WO1998006169A1 Voltage to current converter for high frequency applications |
| 02/12/1998 | DE19631892A1 Vacuum tube amplifier audio signal generation circuit |
| 02/11/1998 | EP0823805A1 Method and apparatus for modeling the AM/AM and AM/PM characteristics of an amplifier, and corresponding method of predistortion |
| 02/11/1998 | EP0823778A1 Active feedback pre-distortion linearization |
| 02/11/1998 | CN1173081A Circuit device for deviation compensation |
| 02/10/1998 | US5717361 DC feedback common emitter type amplifier circuit having stable gain irrespective of power supply voltage |
| 02/10/1998 | CA2016286C Cascode mirror video amplifier |
| 02/07/1998 | CA2211613A1 Procedure and apparatus for modelling the am/am and am/pm characteristics of an amplifier, and corresponding predistortion procedure. |
| 02/05/1998 | WO1998005127A1 Linearizing the transmitter of a mobile station |
| 02/05/1998 | WO1998005119A1 Power amplifier |
| 02/05/1998 | WO1998005118A1 Inductorless voltage biasing circuit for an ac-coupled amplifier |
| 02/04/1998 | EP0822554A2 Method and apparatus for adaptively processing the readback signal in a read channel device for digital storage |
| 02/04/1998 | EP0822476A2 Internal voltage generating circuit |
| 02/04/1998 | CN1172557A Apparatus and method for performing error corrected amplification in radio frequency system |
| 02/04/1998 | CN1172384A Temperature compensated wide dynamic range power detection circuitry for portable RF transmission terminals |
| 02/03/1998 | US5714905 Method for operating a bipolar transistor |
| 02/03/1998 | CA2144368C Mos transconductance amplifier having squaring circuit for lsi implementation |
| 02/03/1998 | CA2110839C Differential amplifier circuit with improved transconductance linearity |
| 01/29/1998 | WO1998004036A1 High-gain common-emitter output stage |
| 01/29/1998 | WO1998004034A1 Rf amplifier having adaptative predistortion circuit |
| 01/29/1998 | DE19711327A1 Power amplifier with low consumption |
| 01/28/1998 | EP0821476A2 Method and device for offset compensation of a signal processing circuit |
| 01/28/1998 | EP0821475A1 Amplifier with neuron MOS transistors |
| 01/28/1998 | EP0821473A1 A microwave VCO having reduced supply voltage |
| 01/28/1998 | EP0821471A2 Device for self-aligning the adjustment of the bias working point in amplifier circuits with Neuron-MOS transistors |
| 01/28/1998 | EP0821243A2 Test method of an impedance linked to a bridge output stage and appartatus related |
| 01/27/1998 | US5712594 Operational transconductance amplifier operable at low supply voltage |
| 01/22/1998 | WO1998002956A1 Oscillator voltage regulator |
| 01/22/1998 | CA2259662A1 Oscillator voltage regulator |
| 01/21/1998 | EP0819339A1 Distortion compensation for a capacitively loaded follower |
| 01/21/1998 | EP0688474B1 Circuit for amplifying a weak direct voltage signal |
| 01/21/1998 | CN1171175A Power amplifier with switching power supply |
| 01/21/1998 | CN1170988A Amplifier circuit and multistage amplifier circuit |
| 01/20/1998 | US5710523 Low noise-low distortion hemt low noise amplifier (LNA) with monolithic tunable HBT active feedback |
| 01/20/1998 | US5710521 Out-of-band compensation for non-linear device |
| 01/20/1998 | US5710519 Circuit for automatically biasing RF power transistor by use of on-chip temperature-sensing transistor |
| 01/20/1998 | CA2083589C Adaptive feed-forward method and apparatus for amplifier noise reduction |
| 01/15/1998 | WO1998001964A1 Modular transmission system and method |
| 01/15/1998 | WO1998001946A1 Controller-based radio frequency amplifier module and method |
| 01/15/1998 | WO1998001945A1 Method and apparatus for reducing intermodulation distortion in digital wideband transmission systems |
| 01/15/1998 | CA2259161A1 Method and apparatus for reducing intermodulation distortion in digital wideband transmission systems |
| 01/14/1998 | EP0818884A2 Apparatus for stabilizing cut-off frequency using a transconductance |
| 01/14/1998 | EP0818880A2 Gain control circuit for a linear power amplifier |
| 01/14/1998 | EP0818879A2 Amplifier circuit and multistage amplifier circuit |
| 01/14/1998 | EP0818877A2 Offset compensation circuit |
| 01/14/1998 | CN1170279A Reference voltage generator controlled as function of temperature |
| 01/13/1998 | US5708392 Method and apparatus for providing limiting transimpedance amplification |
| 01/13/1998 | US5708390 Signal amplifier arrangeable in two different configuration modes |
| 01/13/1998 | US5708376 Variable-gain amplifying device |
| 01/13/1998 | US5708292 Power amplification circuit |
| 01/08/1998 | WO1998000912A1 Bias circuit for a power amplifier |
| 01/08/1998 | WO1998000910A1 Circuit arrangement comprising a feedback loop |
| 01/08/1998 | WO1998000909A1 Device and method for compensating phase distortion |
| 01/08/1998 | WO1998000908A1 Circuit arrangement comprising a cartesian amplifier |
| 01/08/1998 | WO1998000907A1 Circuit arrangement comprising a power amplifier stage |
| 01/08/1998 | DE19710474A1 Temperature compensated logarithmic amplifier for mobile telephone |
| 01/08/1998 | CA2257887A1 Bias circuit for a power amplifier |
| 01/07/1998 | EP0817371A1 Silent start class D amplifier |
| 01/07/1998 | EP0816965A1 Reference voltage generator controlled as a function of temperature |
| 01/07/1998 | EP0740860A4 High speed overvoltage detection and protection circuit |
| 01/06/1998 | US5705959 Apparatus for amplifying a modulated signal |
| 01/06/1998 | US5705950 Hybrid solid state/vacuum tube audio amplifier |
| 01/06/1998 | CA2129305C Failure responsive alternate amplifier and bypass system for communications amplifier |
| 01/02/1998 | DE19631388A1 Vorverzerrung für eine nichtlineare Übertragungsstrecke im Hochfrequenzbereich Predistortion for a non-linear transmission path in the high frequency range |
| 12/31/1997 | WO1997044895A3 Amplifier with active-bootstrapped gain-enhancement technique |
| 12/31/1997 | CN1169215A Intermediate frequency amplifier and method for producing received signal strength indicator signal |
| 12/31/1997 | CN1169200A Arrangement comprising a magnetic write head, and write amplifier with capacktive feed forward compensation |
| 12/30/1997 | US5703536 Liquid cooling system for high power solid state AM transmitter |
| 12/30/1997 | US5703534 Operational transconductance amplifier with good linearity |
| 12/30/1997 | US5703531 Predistortion linearizer and method employing uniplanar Magic T hybrids |
| 12/30/1997 | US5703530 Radio frequency amplifier having improved CTB and cross modulation characteristics |
| 12/30/1997 | US5703529 Amplifier circuit with reduced DC power related transients |
| 12/30/1997 | US5703528 Audio amplifier turn-off control circuit |
| 12/30/1997 | US5703353 Offset removal and spatial frequency band filtering circuitry for photoreceiver signals |
| 12/30/1997 | US5703292 Sensor having an off-frequency drive scheme and a sense bias generator utilizing tuned circuits |
| 12/30/1997 | US5701908 System and method for monitoring and controlling the temperature of a catheter-mounted heater |
| 12/29/1997 | EP0814395A2 Overcurrent sensing circuit for power mos field effect transistor |
| 12/29/1997 | EP0783767A4 Bipolar transistor for use in linear amplifiers |
| 12/24/1997 | WO1997049205A1 Optical receiver |
| 12/24/1997 | WO1997049175A1 Oversampled, noise-shaping, mixed-signal processor |
| 12/24/1997 | WO1997049174A1 Pre-distortion for a non-linear transmission path in the high frequency range |
| 12/24/1997 | CN1168749A AM-FM transmitter power amplifier using class-BC |
| 12/18/1997 | WO1997048181A1 Power delivery system and method of controlling the power delivery system for use in a radio frequency system |
| 12/18/1997 | DE19623930A1 Microwave amplifier protection method against excessive control |
| 12/17/1997 | EP0813296A2 Amplifier arrangements with high damping factor |
| 12/17/1997 | EP0812491A1 Out-of-band compensation for non-linear device |
| 12/16/1997 | US5699383 High-power linear amplification using periodically updated amplitude and phase correction values |
| 12/16/1997 | US5699343 For reading out data recorded on a medium |
| 12/16/1997 | US5699014 Linear amplifier |
| 12/16/1997 | US5699010 Differential amplifier circuit |
| 12/16/1997 | CA2132611C High efficiency amplifier with reduced switching distortion |
| 12/11/1997 | WO1997047081A1 Thermal compensation circuit affecting amplifier gain |
| 12/10/1997 | EP0812061A2 Analog signal processing device and correlation computing device |
| 12/09/1997 | US5697085 Radio transceiver comprising an arrangement for compensating for a DC component |
| 12/09/1997 | US5697081 Intermodulation distortion reduction circuit utilizing variable attenuation |
| 12/09/1997 | US5696467 Method and apparatus for preventing overdrive of a semiconductor circuit |
| 12/09/1997 | CA2065635C Transistor direct-coupled amplifier |
| 12/04/1997 | WO1997045951A1 Device with amplifier means including safety means, and with filter means connected to the amplifier means |
| 12/04/1997 | WO1997045950A1 Hybrid matrix amplifier with noise reduction |
| 12/04/1997 | CA2255795A1 Hybrid matrix amplifier with noise reduction |