| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 10/20/1999 | CN1232318A Semiconductor integrated circuit device |
| 10/19/1999 | US5969575 Class A/F amplifier having second and third order harmonic input and output filtering and self bias distortion correction |
| 10/19/1999 | US5969573 Amplifier circuit with small offset voltage influence |
| 10/19/1999 | US5969572 Linear power amplifier and method for canceling intermodulation distortion signals |
| 10/19/1999 | US5969568 Power output element of an amplifier/transmitter |
| 10/18/1999 | CA2265143A1 Technique for effectively rendering power amplification and control in wireless communications |
| 10/14/1999 | WO1999052206A1 Hybrid chireix/doherty amplifiers power waveform synthesis |
| 10/14/1999 | WO1999052205A1 Dynamic predistortion compensation for a power amplifier |
| 10/14/1999 | WO1999052204A1 Adaptive biasing in a power amplifier |
| 10/14/1999 | WO1999052192A1 High vswr mismatch output stage |
| 10/14/1999 | WO1999045656A3 A differential line driver |
| 10/13/1999 | EP0949754A2 High-frequency power amplifier circuit and high-frequency power amplifier module |
| 10/13/1999 | EP0949753A2 Control system for an audio amplifier |
| 10/13/1999 | EP0948838A1 Combined linear power amplifying device and method |
| 10/13/1999 | CN1231542A Semiconductor device |
| 10/12/1999 | US5966050 Class B push-pull differential amplifiers of the single-end output |
| 10/12/1999 | US5966049 Broadband linearizer for power amplifiers |
| 10/12/1999 | US5966048 Low IMD amplification method and apparatus |
| 10/12/1999 | US5966007 Current source circuit |
| 10/12/1999 | CA2194935C Tube type power amplifier with distortion control |
| 10/12/1999 | CA2064327C Broadband phase shifter and vector modulator |
| 10/07/1999 | WO1999050955A1 Dc isolated audio power amplifier |
| 10/06/1999 | EP0948131A1 Method for adaptively controlling amplifier linearization devices |
| 10/06/1999 | EP0948130A2 Article comprising a power amplifier with feed forward linearizer using a tracking algorithm |
| 10/05/1999 | US5963843 For a headend processing system |
| 10/05/1999 | US5963156 Sample and hold circuit and method with common mode differential signal feedback for converting single-ended signals to differential signals |
| 10/05/1999 | US5963097 Low-noise amplifier |
| 10/05/1999 | US5963096 Amplifier circuit |
| 10/05/1999 | US5963095 Amplifier circuit, a transmitter and a wireless telephone |
| 10/05/1999 | US5963093 Output stage of an amplifier circuit |
| 10/05/1999 | US5963091 Article comprising a power amplifier with feed forward linearizer using a RLS parameter tracking algorithm |
| 10/05/1999 | US5963090 Automatic predistortion adjusting circuit having stable non-linear characteristics regardless of input signal frequency |
| 10/05/1999 | US5963089 Semiconductor amplifying apparatus and communication terminal apparatus |
| 10/05/1999 | US5963064 Linear transfer voltage to current circuit |
| 10/05/1999 | CA2203556C An amplifier circuit and a method of controlling an amplifier for use in a radio frequency communication system |
| 10/05/1999 | CA2203551C Apparatus and method for performing error corrected amplification in a radio frequency system |
| 09/30/1999 | WO1999049589A1 Switchable path power amplifiers |
| 09/30/1999 | WO1999038255A3 Pwm amplifier |
| 09/29/1999 | EP0945774A1 Reference voltage generation circuit providing a stable output voltage |
| 09/29/1999 | EP0944955A1 A protective circuit |
| 09/29/1999 | EP0944954A1 Hybrid transconductors and methods |
| 09/29/1999 | EP0944953A1 Intermodulation compensation in multi-channel amplifiers |
| 09/29/1999 | CN1230048A Method and apparatus for controlling and maintaining tower top low noise amplifier |
| 09/28/1999 | US5959500 Model-based adaptive feedforward amplifier linearizer |
| 09/28/1999 | US5959499 Predistortion system and method using analog feedback loop for look-up table training |
| 09/28/1999 | US5959498 Chopper-stabilized operational amplifier including low-noise chopper switch |
| 09/28/1999 | US5959497 Process for controlling the power of the transmission amplifier of radio equipment |
| 09/28/1999 | US5959475 Complementary push-pull CMOS source follower analog video buffer |
| 09/28/1999 | CA2108233C Method and apparatus for reducing the peak-to-average power in multi-carrier rf communication systems |
| 09/23/1999 | DE19809283A1 Difference amplifier circuit e.g. for operational amplifiers and integrated circuits |
| 09/21/1999 | US5955923 Amplifier with reduced cross-over distortion |
| 09/21/1999 | US5955917 Nonlinear amplifier calibration system and methods |
| 09/21/1999 | US5955916 Modulator linear feed-forward amplifier |
| 09/21/1999 | CA2198109C Active bias for radio frequency power amplifier |
| 09/18/1999 | CA2263053A1 Differential optical signal receiver |
| 09/16/1999 | WO1999046766A2 Optical read/write apparatus |
| 09/16/1999 | WO1999046611A2 Power supply circuit |
| 09/16/1999 | DE19857542A1 Verfahren, Einrichtung, Telefon und Basisstation zur Bereitstellung eines effektiven Nachlaufregelungsleistungswandlers für variable Signale Processes, equipment, phone and base station to provide an effective tracking control power converter for variable signals |
| 09/15/1999 | EP0942526A1 Circuit arrangement for adjusting the impedance of a differential active component |
| 09/15/1999 | EP0942525A1 Adaptive joint linearization, equalization and delay alignment for a wide-band power amplifier |
| 09/15/1999 | EP0942524A2 Radio frequency amplifiers |
| 09/15/1999 | EP0941575A1 Efficient parallel-stage power amplifier |
| 09/14/1999 | US5952883 Circuit arrangement for amplifying an electrical signal converted from an optical signal |
| 09/14/1999 | US5952875 Circuit with hot electron protection and method |
| 09/14/1999 | US5952864 Integratable circuit configuration for stabilizing the operating current of a transistor by negative feedback, being suitable in particular for battery-operated devices |
| 09/14/1999 | US5952860 Amplifier using a single polarity power supply |
| 09/10/1999 | WO1999045656A2 A differential line driver |
| 09/10/1999 | WO1999045642A1 Amplification using amplitude reconstruction of amplitude and/or angle modulated carrier |
| 09/10/1999 | WO1999045641A1 A method in the compensation of unlinearities in an amplifier, an amplifier, and uses of the method and the amplifier |
| 09/10/1999 | WO1999045640A1 A predistorter |
| 09/10/1999 | WO1999045639A1 Feed forward amplifier |
| 09/10/1999 | WO1999045638A1 Predistorter |
| 09/10/1999 | WO1999045637A1 Amplifier with adjustable bias current |
| 09/10/1999 | WO1999033169A3 Method and device for phase regulation |
| 09/10/1999 | CA2322787A1 Amplifier with adjustable bias current |
| 09/09/1999 | DE3348377C2 Schaltung zum Umwandeln von Gleichsignalen A circuit for converting DC signals |
| 09/09/1999 | DE19824199C1 Integrated logarithmic amplifier circuit with temperature compensation, e.g. for audio apparatus |
| 09/08/1999 | EP0940911A1 Method and apparatus for tailored distortion of a signal prior to amplification |
| 09/08/1999 | EP0940910A1 Power amplifier for a radio transmitter and mobile telephone with a radio transmitter |
| 09/08/1999 | CN1228004A Systems and methods for dynamically controlling variable power amplifier |
| 09/07/1999 | US5949820 Method for optimizing an equalization and receive filter |
| 09/07/1999 | US5949287 Power amplifier |
| 09/07/1999 | US5949283 Adaptive digital predistortion linearization and feed-forward correction of RF power amplifier |
| 09/07/1999 | US5949159 Idle current correcting circuit and low voltage drive type electronic appliance |
| 09/07/1999 | CA2108461C Power amplifier combining network |
| 09/02/1999 | WO1999044343A1 Quadrature modulator |
| 09/02/1999 | WO1999044300A1 Receiver input circuit |
| 09/01/1999 | EP0939484A1 Operational amplifier |
| 09/01/1999 | EP0938777A2 A high frequency amplifier, and a communication receiver or transceiver |
| 08/31/1999 | US5946181 Thermal shutdown circuit and method for sensing thermal gradients to extrapolate hot spot temperature |
| 08/31/1999 | US5945880 Low noise amplifier |
| 08/31/1999 | US5945877 Power amplifier with bootstrap voltage clamp |
| 08/31/1999 | US5945864 Circuit configuration for offset compensation |
| 08/26/1999 | WO1999043092A1 Transmitter |
| 08/26/1999 | WO1999043083A1 Amplifier for radio transmission |
| 08/26/1999 | WO1999043081A1 Error extraction using autocalibrating rf correlator |
| 08/26/1999 | DE19806394C1 Circuit for amplifying a difference voltage signal |
| 08/25/1999 | EP0937335A1 An arrangement for reducing and stabilizing the amplification of a darlington-coupled output stage |
| 08/25/1999 | EP0937334A1 Arrangement for protecting the output transistors in a power amplifier |
| 08/25/1999 | CN1227013A Voltage to current converter for high frequency applications |