| 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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| 12/20/2005 | US6977609 Technique for changing a range gate and radar coverage |
| 12/20/2005 | US6977562 Self-tuned matching network for high efficient power amplifiers |
| 12/20/2005 | US6977552 Impedance matching low noise amplifier having a bypass switch |
| 12/20/2005 | US6977548 Predistortion circuit, low-distortion power amplifier, and control methods therefor |
| 12/20/2005 | US6977541 Variable time constant circuit and filter circuit using the same |
| 12/15/2005 | WO2005120049A2 Ccd-based low noise parametric amplifier |
| 12/15/2005 | WO2005120001A2 Fully digital transmitter including a digital band-pass sigma-delta modulator |
| 12/15/2005 | WO2005119911A1 Power supply voltage monitoring circuit and electronic device incorporating the same |
| 12/15/2005 | WO2005119907A2 General-purpose wideband amplifier |
| 12/15/2005 | WO2005119904A1 Power amplifier and pulse-width modulated amplifier |
| 12/15/2005 | WO2005119903A1 Quadrature offset power amplifier |
| 12/15/2005 | WO2005039039A3 Data signal amplifier and processor with multiple signal gains for increased dynamic signal range |
| 12/15/2005 | US20050277826 Apparatus and method for reducing interference |
| 12/15/2005 | US20050277391 Transmitting apparatus |
| 12/15/2005 | US20050275980 RF generator with commutation inductor |
| 12/15/2005 | US20050275477 Methods and apparatus for calibrating gm-Z |
| 12/15/2005 | US20050275465 Semiconductor amplifier |
| 12/15/2005 | US20050275461 Low voltage differential amplifier circuit for wide voltage range operation |
| 12/15/2005 | US20050275460 Current-mode instrumentation amplifier |
| 12/15/2005 | US20050275459 Voltage comparator circuit |
| 12/15/2005 | US20050275456 RF generator with reduced size and weight |
| 12/15/2005 | US20050275455 Method and apparatus for linear low-frequency feedback in monolithic low-noise charge amplifiers |
| 12/15/2005 | US20050275453 Current-mode instrumentation amplifier gain error correction circuitry |
| 12/15/2005 | US20050275452 Precision chopper-stabilized current mirror |
| 12/15/2005 | US20050275404 High fidelity, high power switched amplifier |
| 12/15/2005 | DE102005022579A1 Überstromschutzschaltung, zugehöriger Schaltverstärker und Überstromschutzverfahren The overcurrent protection circuit, associated switching amplifier and overcurrent protection method |
| 12/15/2005 | DE102004024805A1 Verfahren und Regelanordnung zur Regelung der Ausgangsleistung einer HF-Verstärkeranordnung Process and control device for controlling the output power of an RF amplifier arrangement |
| 12/15/2005 | CA2568503A1 Method and device using ccd-based low noise parametric amplifier |
| 12/14/2005 | EP1605586A1 Semiconductor amplifier |
| 12/14/2005 | EP1400011B1 A transmitter control circuit |
| 12/14/2005 | EP1374518B1 Signal processing of an amplitude-modulated and/or phase-modulated high-frequency signal according to the principle of envelope elimination and restoration |
| 12/14/2005 | CN2746651Y Direct feedback linear power amplifier |
| 12/14/2005 | CN1707958A Transmitting apparatus |
| 12/14/2005 | CN1707942A Voltage comparator circuit |
| 12/14/2005 | CN1707941A Multistage amplifying devices, and reception device and transmission device using the same |
| 12/13/2005 | US6975734 Audio apparatus of negative driving with adaptive gain control |
| 12/13/2005 | US6975688 Off-line MCPA calibration |
| 12/13/2005 | US6975177 Method and system for a generation of a two-level signal |
| 12/13/2005 | US6975172 Smart voltage rail reduction audio amplifier |
| 12/13/2005 | US6975167 Adaptive predistortion for a transmit system with gain, phase and delay adjustments |
| 12/13/2005 | US6975166 Power amplifier |
| 12/08/2005 | WO2005117382A2 Multi-channel pulse modulator system |
| 12/08/2005 | WO2005117274A1 Transmission output control circuit, and wireless device using the same |
| 12/08/2005 | US20050273273 Metrics for characterizing chemical arrays based on analysis of variance (ANOVA) factors |
| 12/08/2005 | US20050271162 Techniques to adjust vertical offset |
| 12/08/2005 | US20050271161 Digital amplitude modulation |
| 12/08/2005 | US20050270389 Method and device using CCD-based low noise parametric amplifier |
| 12/08/2005 | US20050270264 Offset cancel circuit of voltage follower equipped with operational amplifier |
| 12/08/2005 | US20050270107 Low distortion amplifier |
| 12/08/2005 | US20050270105 Preserving linearity of a rf power amplifier |
| 12/08/2005 | US20050270104 Broadband amplifier with improved noise figure and distortion characteristics |
| 12/08/2005 | US20050270103 Dynamic biasing system for an amplifier |
| 12/08/2005 | US20050270102 Power amplifying apparatus |
| 12/08/2005 | US20050270101 Input circuit for receiving an input signal, and a method for adjusting an operating point of an input circuit |
| 12/08/2005 | US20050270100 Bias current cancellation for differential amplifiers |
| 12/08/2005 | US20050270099 Amplifier arrangement and method for operation of an amplifier arrangement |
| 12/08/2005 | US20050270098 General-purpose wideband amplifier |
| 12/08/2005 | US20050270097 RF generator with voltage regulator |
| 12/08/2005 | US20050270096 RF generator with phase controlled mosfets |
| 12/08/2005 | US20050270095 Paralleling digital-input amplifiers |
| 12/08/2005 | US20050270094 Multistage amplifying devices, and reception device and transmission device using the same |
| 12/08/2005 | US20050270092 Calibration technique for variable-gain amplifiers |
| 12/08/2005 | DE102004024082A1 Eingangsschaltung zum Empfangen eines Eingangssignals sowie ein Verfahren zum Anpassen eines Arbeitspunktes einer Eingangsschaltung Input circuitry for receiving an input signal as well as a method for adjusting a bias point of an input circuit |
| 12/07/2005 | EP1603231A1 RF generator with voltage regulator |
| 12/07/2005 | EP1603230A1 Multistage amplyfying devices, and reception device and transmission device using the same |
| 12/07/2005 | EP1602173A1 Self zeroing for critical, continuous-time applications |
| 12/07/2005 | EP1425850A4 Circuits and methods for compensating switched mode amplifiers |
| 12/07/2005 | CN1706103A Low noise switching voltage regulator |
| 12/07/2005 | CN1706096A Predistortion linearizing |
| 12/07/2005 | CN1230981C Precorrective linearized power amplifying system using digital IF technique |
| 12/06/2005 | US6973139 Base station transmitter having digital predistorter and predistortion method thereof |
| 12/06/2005 | US6972630 Self-biased darlington amplifier |
| 12/06/2005 | US6972629 Modulation dependent biasing for efficient and high-linearity power amplifiers |
| 12/06/2005 | US6972628 Integratable, voltage-controlled RF power amplifier |
| 12/06/2005 | US6972627 High frequency power amplifier module |
| 12/06/2005 | US6972626 High frequency power amplification electric part and wireless communication system |
| 12/06/2005 | US6972625 Variable transconductance variable gain amplifier utilizing a degenerated differential pair |
| 12/06/2005 | US6972622 Optimization of error loops in distributed power amplifiers |
| 12/06/2005 | US6972621 Power amplifier |
| 12/06/2005 | US6972620 Post amplifier array integrated circuit |
| 12/06/2005 | US6972618 High efficiency power amplifier with multiple power modes |
| 12/06/2005 | US6972616 Low-noise, fast-settling bias circuit and method |
| 12/06/2005 | CA2389303C High-frequency amplifier |
| 12/01/2005 | WO2005114838A1 Method and apparatus having a digital pwm signal generator with integral noise shaping |
| 12/01/2005 | WO2005114832A1 Medium voltage or high voltage audio power amplifier and protection circuit |
| 12/01/2005 | WO2005053150A3 An operational amplifier selecting one of inputs, and an amplifying apparatus using the op amplifier the verification method |
| 12/01/2005 | WO2005048300A3 Electronically programmable multimode circuit |
| 12/01/2005 | WO2005002112A3 Digital baseband system and process for compensating for analog radio transmitter impairments |
| 12/01/2005 | WO2004054093A3 Amplifier circuit having an impedance-controllable bias-boosting circuit |
| 12/01/2005 | US20050266811 Ramp signal with boost portion preceding a time slot |
| 12/01/2005 | US20050266809 Controlling transmission mode on basis of power in preceding time slot |
| 12/01/2005 | US20050265481 Fully digital transmitter including a digital band-pass sigma-delta modulator |
| 12/01/2005 | US20050264970 Power supply controller and method for controlling power supply circuit |
| 12/01/2005 | US20050264364 Quadrature offset power amplifier |
| 12/01/2005 | US20050264363 Temperature compensated on-chip bias circuit for linear RF HBT power amplifiers |
| 12/01/2005 | US20050264361 Automatic biasing of a power device for linear operation |
| 12/01/2005 | US20050264359 Programmable automatic signal amplitude control circuit |
| 12/01/2005 | US20050264358 High output current wideband output stage/buffer amplifier |
| 12/01/2005 | US20050264357 Gain boosted operational amplifier having a field effect transistor with a well biasing scheme |
| 12/01/2005 | US20050264355 Method for generating a radio-frequency alternating voltage and an associated radio-frequency power amplifier |