| 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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| 02/08/2001 | DE10035065A1 Schaltung zur Leistungsverstärkung mit Versorgungseinstellung zur Steuerung der Leistung des benachbarten Kanals und des übernächsten Kanals Circuit for power amplification with care setting to control the power of the adjacent channel and of the next channel |
| 02/08/2001 | DE10022770A1 Integrated circuit current read-amplifier design, has output voltage level control circuit provided with first and second resistors and NMOS transistor connected to their point |
| 02/08/2001 | CA2380772A1 Dc offset calibration for a digital switching amplifier |
| 02/08/2001 | CA2380324A1 Break-before-make distortion compensation for a digital amplifier |
| 02/08/2001 | CA2380273A1 Dynamic switching frequency control for a digital switching amplifier |
| 02/07/2001 | EP1075081A2 Detector driven bias circuit for power transistors |
| 02/07/2001 | EP1074092A1 Method for neutralising a transmitter tube |
| 02/07/2001 | CN1283334A Proframmable linear receiver |
| 02/07/2001 | CN1283327A Low voltage transistor biasing |
| 02/07/2001 | CN1283326A Feed forwark amplifier with digital intermodulation control |
| 02/06/2001 | US6185450 Digital sliding pole fast-restore for an electrocardiograph display |
| 02/06/2001 | US6184919 Extended length differentially driven analog video link |
| 02/06/2001 | US6184750 Control circuit driven by a differential input voltage and method for controlling same |
| 02/01/2001 | WO2001008320A1 Method and apparatus for distortion compensation of radio device |
| 02/01/2001 | WO2001008319A1 Radio device with distortion compensation |
| 02/01/2001 | WO2001008298A1 Amplifier having bias circuit self-compensating for vgs process variation and ids aging |
| 02/01/2001 | WO2001008297A1 Digital predistortion methods for wideband amplifiers |
| 02/01/2001 | WO2001008296A1 Amplifier measurement and modeling processes for use in generating predistortion parameters |
| 02/01/2001 | WO2001008295A1 Predistortion amplifier system with separately controllable amplifiers |
| 02/01/2001 | WO2001008294A1 Transmission antenna array system with predistortion |
| 02/01/2001 | WO2001008293A1 Feed forward distortion reduction system |
| 02/01/2001 | WO2000062416A3 Amplifier device with adjustable operating-point control and use of said amplifier device |
| 02/01/2001 | WO2000033460A9 Class-ab output stages with improved distortion performance |
| 01/31/2001 | EP1073196A2 Signal notching system for limiting signal peaks |
| 01/31/2001 | CN2417633Y Amplifier used for audio-video equipment |
| 01/31/2001 | CN1282461A Feedforward amplifier network with frequency swept pilot tone for reducing power amplifier produced distortion |
| 01/31/2001 | CN1282151A Power amplifying circuit with power supply regulator for controlling adjacent and alternate channel power |
| 01/31/2001 | CN1282143A Power amplification circuit with load regulator for controlling adjacent and alternate channel power |
| 01/31/2001 | CN1282141A Load controlled amplitude envelope amplifier system |
| 01/31/2001 | CN1282140A Load envelope following amplifier system |
| 01/31/2001 | CN1282139A Amplifier load regulating system based on memory |
| 01/31/2001 | CN1061490C Amplifier stage with DB-linear output voltage |
| 01/30/2001 | US6181208 Switchable path power amplifier with schotky diode combining network |
| 01/30/2001 | US6181204 Linear and multi-sinh transconductance circuits |
| 01/30/2001 | US6181199 Power IQ modulation systems and methods |
| 01/30/2001 | US6181196 Accurate bandgap circuit for a CMOS process without NPN devices |
| 01/25/2001 | WO2001006665A1 Method and apparatus for power amplification |
| 01/25/2001 | WO2001006644A1 Variable gain amplifier with improved linearity |
| 01/25/2001 | WO2001006643A1 Parallel amplifier architecture using digital phase control techniques |
| 01/25/2001 | WO2001006642A1 Linearizer for microwave amplifier |
| 01/25/2001 | WO2001006641A1 System for the linearization of an amplifying circuit |
| 01/25/2001 | WO2001006640A1 High efficiency feed-forward rf power amplifier with predistortion enhancement |
| 01/24/2001 | EP1071206A1 A receiver portion of a telephone |
| 01/24/2001 | EP1071204A2 Power amplifier and communication device including power amplifier |
| 01/24/2001 | EP1070388A1 Communication device |
| 01/24/2001 | EP0797867B1 Low voltage linear output buffer operational amplifier |
| 01/24/2001 | CN1061187C Low voltage RF amplifier and mixer with single bias block and method |
| 01/23/2001 | US6178313 Control of gain and power consumption in a power amplifier |
| 01/23/2001 | US6177841 High frequency power amplifier |
| 01/23/2001 | US6177840 Circuit arrangement for amplifying a differential voltage signal which has a substantially temperature independent characteristic curve |
| 01/23/2001 | US6177838 CMOS gain boosting scheme using pole isolation technique |
| 01/23/2001 | US6177837 Active low-pass filter |
| 01/23/2001 | US6177836 Feed forward linearized traveling wave tube |
| 01/18/2001 | WO2001005042A1 A two-port with a frequency-dependent network |
| 01/18/2001 | WO2001005028A1 A dual-band, dual-mode power amplifier |
| 01/18/2001 | WO2001005027A1 Biasing circuit for vgs drift and thermal compensation of a power device |
| 01/18/2001 | WO2001005026A1 A wideband digital predistortion linearizer for nonlinear amplifiers |
| 01/18/2001 | DE19930195A1 Amplifier circuit for HF signals in 2 HF ranges |
| 01/18/2001 | DE19930194A1 Verfahren zum Entwurf rauscharmer integrierter Verstärkerschaltungen Method for designing low-noise amplifier integrated circuits |
| 01/17/2001 | EP1068666A1 Hybrid chireix/doherty amplifiers power waveform synthesis |
| 01/17/2001 | CN1280433A Amplitude calculating circuit |
| 01/17/2001 | CN1280416A Feedback signal amplifying treating method |
| 01/16/2001 | US6175478 Short-circuit protection circuit, particularly for power transistors |
| 01/16/2001 | US6175462 High input impedance single ended, low supply voltage magnetoresistive preamplifier circuits |
| 01/16/2001 | US6175438 Differential optical signal receiver |
| 01/16/2001 | US6175279 Amplifier with adjustable bias current |
| 01/16/2001 | US6175278 Variable gain amplifier circuit |
| 01/16/2001 | US6175276 Indirect emitter-coupling preamplifier for magneto-resistive heads with single-ended feedback |
| 01/16/2001 | US6175273 Method and apparatus for high efficiency wideband power amplification |
| 01/16/2001 | US6175272 Pulse—width modulation system |
| 01/16/2001 | US6175270 Method and apparatus for tailored distortion of a signal prior to amplification to reduce clipping |
| 01/16/2001 | US6175265 Current supply circuit and bias voltage circuit |
| 01/11/2001 | WO2001003299A1 Improvements in and relating to triangle wave generators and power amplifiers |
| 01/11/2001 | WO2001003291A1 Arrangement comprising a first and a second amplifier whereby a maximum of one of said amplifiers amplifies |
| 01/11/2001 | WO2001003289A1 Power amplifier for efficiently amplifying linearly modulated signals |
| 01/11/2001 | WO2001003288A1 Integrated tunable high efficiency power amplifier |
| 01/11/2001 | WO2001003287A1 Reducing distortion of signals |
| 01/11/2001 | WO2001003286A1 Method for designing integrated amplifier circuits with reduced noise |
| 01/11/2001 | DE19930513A1 Photodetector-based scanning device e.g. for optical recording carriers, such as CD and DVD, has voltage control circuit based on operational amplifier and MOSFET elements |
| 01/11/2001 | DE19928942A1 Schaltungsanordnung zur Anpassung eines Verstärkers an eine Hochfrequenzleitung Circuit arrangement for matching an amplifier to a radio-frequency line |
| 01/10/2001 | EP1067696A2 Distortion compensation method and wireless communication apparatus |
| 01/10/2001 | EP1067676A1 Method for linearising a power amplifier over a wide frequency band |
| 01/10/2001 | EP1066682A1 A predistorter |
| 01/10/2001 | EP1066681A1 Feed forward amplifier |
| 01/10/2001 | EP1066680A1 Predistorter |
| 01/10/2001 | EP1066679A1 Method and circuit for controlling the compensation of offset voltages of a radio receiver circuit which is integrated in a circuit module |
| 01/10/2001 | EP0890218A4 Adaptive amplifier distortion compensation circuit |
| 01/10/2001 | CN1279842A Amplifier and method of power amplification |
| 01/09/2001 | US6173163 Switched sampling systems and methods for monitoring radio transmit power |
| 01/09/2001 | US6173056 Methods for adjusting audio signals responsive to changes in a power supply level and related communications devices |
| 01/09/2001 | US6172568 Power amplifier |
| 01/09/2001 | US6172566 Low noise amplifier |
| 01/09/2001 | US6172565 Adaptive joint linearization, equalization and delay alignment for a wideband power amplifier |
| 01/09/2001 | US6172564 Intermodulation product cancellation circuit |
| 01/09/2001 | US6172563 Lossless feedback transistor amplifiers with linearity augmentation |
| 01/09/2001 | US6172562 Device for controlling the amplitude and the phase of a radio frequency signal |
| 01/09/2001 | US6172560 Amplifier with feedforward loops for rejecting non-linear distortion |
| 01/09/2001 | US6172556 Feedback-controlled low voltage current sink/source |
| 01/04/2001 | WO2001001568A1 Circuit array for adapting an amplifier to a high frequency line and utilization of said circuit array |
| 01/04/2001 | WO2001001567A1 A muting circuit having controllable impedance means for soft muting |