| 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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| 12/01/2005 | US20050264353 Adaptive feed-forward amplifiers and the like |
| 12/01/2005 | US20050264351 Transresistance amplifier for a charged particle detector |
| 12/01/2005 | US20050264333 Efficient pulse amplitude modulation transmit modulation |
| 12/01/2005 | DE19821735B4 Leistungsverstärker Power amplifier |
| 12/01/2005 | DE102004021863A1 Sensorelement zum Bereitstellen eines Sensorsignals und Verfahren zum Betreiben eines Sensorelementes Sensor element for providing a sensor signal and method of operating a sensor element |
| 12/01/2005 | DE10000486B4 Vorspannungsschaltung und Verfahren zum Zuführen einer Vorspannung Bias circuit and method for supplying a bias voltage |
| 11/30/2005 | EP1601104A1 Overcurrent detecting apparatus |
| 11/30/2005 | EP1601099A1 RF generator with phase controlled mosfets |
| 11/30/2005 | EP1601098A1 RF generator with commutation inductor |
| 11/30/2005 | EP1601097A1 RF generator with reduced size and weight |
| 11/30/2005 | EP1601096A1 Bias voltage adjusting method and electronic loop circuit |
| 11/30/2005 | EP1601015A1 Heatsink for power devices |
| 11/30/2005 | EP1599937A1 Method and apparatus for controlling the output power of a power amplifier |
| 11/30/2005 | EP1599935A1 Low voltage class ab transconductor circuits |
| 11/30/2005 | EP1377839B1 Low-loss tunable ferro-electric device and method of characterization |
| 11/30/2005 | CN2744067Y Power amplifier |
| 11/30/2005 | CN1703828A Method for the adaptive pre-distortion of digital raw data values and device for carrying out said method |
| 11/30/2005 | CN1703827A Apparatus, methods and articles of manufacture for multiband signal processing |
| 11/30/2005 | CN1702959A RF power amplifier having high power-added efficiency |
| 11/29/2005 | US6970055 Tunable planar capacitor |
| 11/29/2005 | US6970051 Pulse width modulator circuit having negative bias |
| 11/29/2005 | US6970041 Linearization method and amplifier arrangement |
| 11/29/2005 | US6970040 Multi-mode/multi-band power amplifier |
| 11/29/2005 | US6970039 Efficiency enhancement for MMIC amplifiers |
| 11/29/2005 | US6970038 Switching scheme to improve linearity and noise in switched capacitor stage with switched feedback capacitor |
| 11/29/2005 | CA2279444C Double side band pilot technique for a control system that reduces distortion produced by electrical circuits |
| 11/24/2005 | WO2005112256A1 Temerature compensation attenuator |
| 11/24/2005 | WO2005112254A1 Adaptation of iq-error compensation |
| 11/24/2005 | WO2005112253A1 Adaptive predistortion method and arrangement |
| 11/24/2005 | WO2005112252A1 Plop noise avoidance for an amplifier |
| 11/24/2005 | WO2005110044A2 Dual-band cmos front-end with two gain modes |
| 11/24/2005 | WO2005060672A3 Gate control circuit with soft start/stop function |
| 11/24/2005 | WO2004098117A3 Distributed gain network |
| 11/24/2005 | US20050261797 Programmable radio transceiver |
| 11/24/2005 | US20050259000 Apparatus for producing an amplified radio frequency pulse |
| 11/24/2005 | US20050258902 Wideband CMOS gain stage |
| 11/24/2005 | US20050258899 Amplifier circuit |
| 11/24/2005 | US20050258898 Predistorter |
| 11/24/2005 | US20050258896 Variable gain amplifier |
| 11/24/2005 | US20050258840 Sensor element for providing a sensor signal, and method for operating a sensor element |
| 11/24/2005 | DE10200682B4 Mittelwertbildende Trace-Funktion mit Indizierung durch ein Prozesssignal Averaging end trace function with indexing by a process signal |
| 11/23/2005 | EP1598943A1 Transmission device and adjustment method thereof |
| 11/23/2005 | EP1598932A1 Cascode amplifier |
| 11/23/2005 | EP1598679A1 Radio frequency pulse amplifier with control loops for compensating phase and amplitude deviations |
| 11/23/2005 | EP1597824A1 A method and a device for adjusting power amplifier properties |
| 11/23/2005 | EP1597821A1 High efficiency amplification |
| 11/23/2005 | EP1547246A4 Integrated circuit with automatic polarity detection and configuration |
| 11/23/2005 | EP1040586B1 Programmable linear receiver |
| 11/23/2005 | CN1701613A Packaged RF power transistor having RF bypassing/output matching network |
| 11/23/2005 | CN1701521A Transmission device and adjustment method thereof |
| 11/23/2005 | CN1701507A Amplifier circuit |
| 11/23/2005 | CN1700591A Predistorter |
| 11/23/2005 | CN1228917C Current-type synchronous super-class A bias circuit |
| 11/22/2005 | US6968163 Method and transmission circuit for generating a transmission signal |
| 11/22/2005 | US6968157 System and method for protecting devices from interference signals |
| 11/22/2005 | US6967535 High frequency power amplifier circuit |
| 11/22/2005 | US6967528 Variable gain amplifier |
| 11/22/2005 | US6967527 Pulse width modulation amplifier |
| 11/22/2005 | US6967526 Low temperature coefficient input offset voltage trim with digital control |
| 11/17/2005 | WO2005109631A1 Overcurrent limiting method and device |
| 11/17/2005 | WO2005109630A1 Amplifying signals using a quadrature coupled amplifier |
| 11/17/2005 | WO2005109629A1 Phase rotation estimation |
| 11/17/2005 | WO2005109628A1 A tuneable circuit for canceling third order modulation |
| 11/17/2005 | WO2005109627A1 Amplifier bias enhancement technique |
| 11/17/2005 | WO2005109626A1 Dynamic gain compensation and calibration |
| 11/17/2005 | US20050255814 Apparatus and method for compensating for an offset of a power amplifier in a mobile communication system |
| 11/17/2005 | US20050255809 Method and control system for controlling the output power of an RF amplifier system |
| 11/17/2005 | US20050254595 Method and apparatus for estimating a sample delay between a transmission signal and a feedback signal in a mobile communication system, and a base station transmitter using the same |
| 11/17/2005 | US20050254573 Method and apparatus having a digital PWM signal generator with integral noise shaping |
| 11/17/2005 | US20050253745 Digital predistortion apparatus and method for a wideband power amplifier |
| 11/17/2005 | US20050253719 Closed loop transmitter control for power amplifier in an EAS system |
| 11/17/2005 | US20050253657 Controlled impedance bias circuit |
| 11/17/2005 | US20050253655 Amplifier bias enhancement technique |
| 11/17/2005 | US20050253653 Feedback amplifier having amplified signal path and feedback signal path separated |
| 11/17/2005 | US20050253652 Digital predistortion apparatus and method in power amplifier |
| 11/17/2005 | US20050253651 Stability compensation for adjustable gain amplifier |
| 11/17/2005 | US20050253650 Amplifier circuit with reduced power-on transients and method thereof |
| 11/17/2005 | US20050253649 Class-D amplifier |
| 11/17/2005 | US20050253648 Method and apparatus for protecting a switching amplifier from excess current |
| 11/17/2005 | DE10236861B4 Verstärker mit präzise digital stellbaren Parametern und Verwendung des Verstärkers Amplifier with digitally adjustable parameters and precise use of the amplifier |
| 11/17/2005 | DE102005011591A1 Broadband amplifier for transmission and amplification of high frequency signals especially for cable television has filter units of differing frequency in feedback branch |
| 11/17/2005 | DE102005002787A1 Leistungs-Metalloxid-Halbleitervorrichtung in Vertikal-Bauart mit Überstrom-Schutzfunktion Power metal oxide semiconductor device in vertical design with over-current protection function |
| 11/17/2005 | DE102004019984A1 Einrichtung zur Verarbeitung von Funk-Sendedaten mit einer digitalen Vorverzerrung Means for processing radio-transmission data with a digital predistortion |
| 11/17/2005 | CA2566491A1 A tuneable circuit for canceling third order modulation |
| 11/16/2005 | EP1596346A1 Closed loop transmitter control for power amplifier in an eas system |
| 11/16/2005 | EP1455445B1 Digital amplification device |
| 11/16/2005 | EP1219025B1 Method for linearising a high-frequency amplifier |
| 11/16/2005 | CN1698265A Logic low noise amplifier and amplification control method thereof |
| 11/16/2005 | CN1697313A Drive circuit able to gradually increase and reduce voltage |
| 11/16/2005 | CN1697312A Differential amplifier in low voltage and low power consumption and high isolation |
| 11/16/2005 | CN1696861A Constant voltage outputting circuit |
| 11/16/2005 | CN1227808C Voltage limiting bias circuit for reduction of hot electron degradation effects in MOS cascade circuits |
| 11/16/2005 | CN1227733C 半导体器件 Semiconductor devices |
| 11/15/2005 | US6965837 Method and arrangement for detecting load mismatch, and a radio device utilizing the same |
| 11/15/2005 | US6965270 Regulated cascode amplifier with controlled saturation |
| 11/15/2005 | US6965267 Bipolar differential input stage with input bias current cancellation circuit |
| 11/15/2005 | US6965265 Driving apparatus in a liquid crystal display |
| 11/10/2005 | WO2005107063A1 Bypass circuit |
| 11/10/2005 | WO2005107062A2 Servo balancing among driver devices |
| 11/10/2005 | WO2005107060A2 Method and system for compensating for phase variations caused by transmitter activation |