| 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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| 03/16/1995 | WO1995007574A1 Amplifier stage with a db-linear output voltage |
| 03/16/1995 | WO1995007573A1 Method and arrangement for controlling the operation of a high-frequency power amplifier |
| 03/15/1995 | EP0643484A1 Offset reduction in a zero-detecting circuit |
| 03/15/1995 | EP0643479A1 Preamplifier circuit arrangements |
| 03/15/1995 | EP0643478A1 Cascode circuit operable at a low working voltage and having a high output impedance |
| 03/15/1995 | EP0642681A1 Method and apparatus for controlling a current generator. |
| 03/14/1995 | US5398004 HBT direct-coupled low noise wideband microwave amplifier |
| 03/14/1995 | US5397944 Dense offset calibration circuitry and method |
| 03/08/1995 | EP0642247A2 Loudspeaking device for telephone sets |
| 03/08/1995 | EP0642217A1 Circuit for controlling the bias current of a push-pull output stage |
| 03/07/1995 | US5396194 Audio frequency power amplifiers |
| 03/07/1995 | US5396193 Frequency response-compensated circuit |
| 03/07/1995 | US5396190 Circuit for compensating for nonlinear distortion in transmit power amplifier |
| 03/07/1995 | US5396189 For reducing distortion produced by an electrical device |
| 03/07/1995 | US5396123 Offset detecting circuit and output circuit and integrated circuit including the output circuit |
| 03/02/1995 | WO1995006355A1 Regenerative amplifier circuit |
| 03/02/1995 | WO1995006354A1 Radio transmitter with power amplifier linearizer |
| 03/01/1995 | EP0640974A2 Reference voltage generation circuit |
| 02/28/1995 | US5394120 Device for testing an amplifier |
| 02/28/1995 | US5394113 High impedance low-distortion linear amplifier |
| 02/28/1995 | US5394111 Operational amplifier with junction field effect transistors as input transistor pair |
| 02/28/1995 | US5394080 Universal signal converter using multiple current mirrors |
| 02/28/1995 | US5394037 Sense amplifiers and sensing methods |
| 02/28/1995 | US5392784 Virtual right leg drive and augmented right leg drive circuits for common mode voltage reduction in ECG and EEG measurements |
| 02/22/1995 | EP0639307A1 Modulation amplifier for radio transmitters |
| 02/21/1995 | US5392463 Power amplifier capable of saturation and linear amplification |
| 02/21/1995 | US5392293 Built-in current sensor for IDDQ testing |
| 02/21/1995 | US5392004 Combination amplifier/bias voltage generator |
| 02/21/1995 | US5392001 Capacitively-coupled amplifier with improved low frequency response |
| 02/21/1995 | US5392000 Apparatus and method for frequency compensating an operational amplifier |
| 02/21/1995 | US5391979 Constant current generating circuit for semiconductor devices |
| 02/16/1995 | WO1995005027A1 Low-current amplifier |
| 02/15/1995 | EP0638994A1 Transmitter and power amplifier therefor |
| 02/15/1995 | EP0638993A1 Detector amplifier for guarding system |
| 02/14/1995 | US5389896 HBT monolithic variable gain amplifier with bias compensation and buffering |
| 02/14/1995 | US5389895 Transconductance amplifier |
| 02/14/1995 | US5389894 Power amplifier having high output voltage swing and high output drive current |
| 02/14/1995 | US5389891 Semiconductor device comprising a two-stage differential amplifier |
| 02/14/1995 | US5389839 Integratable DC blocking circuit |
| 02/14/1995 | US5389829 Output limiter for class-D BICMOS hearing aid output amplifier |
| 02/12/1995 | CA2129790A1 Detector-amplifier for monitoring system |
| 02/09/1995 | WO1995004400A1 Adaptive feedback system |
| 02/08/1995 | CN1098574A Communication apparatus utilizing high power amplifier |
| 02/08/1995 | CN1098572A A low-distortion feed-forward amplifier |
| 02/08/1995 | CN1098571A Temperature-compensated gain-controlled amplifier having a wide linear dynamic range |
| 02/07/1995 | US5387880 Compact monolithic wide band HEMT low noise amplifiers with regulated self-bias |
| 02/07/1995 | US5387878 Amplification circuit |
| 02/07/1995 | US5387876 High efficiency amplifier with reduced switching distortion |
| 02/01/1995 | EP0637128A1 Voltage-current converter |
| 02/01/1995 | CN1098234A Noiseless amplifier |
| 01/31/1995 | US5386198 Linear amplifier control |
| 01/31/1995 | US5386160 Trim correction circuit with temperature coefficient compensation |
| 01/26/1995 | DE4324198A1 Radiofrequency power amplifier circuit |
| 01/25/1995 | EP0635934A2 Constant-amplitude wave combination type amplifier |
| 01/25/1995 | EP0635933A2 Constant-amplitude wave combination type amplifier |
| 01/25/1995 | EP0635932A2 Low-distortion cascode circuit |
| 01/24/1995 | US5384549 Amplifier incorporating current-limiting protection of output transistor |
| 01/24/1995 | US5384529 Current limiting circuit and method of manufacturing same |
| 01/19/1995 | WO1995002277A1 Stable, narrow bandwidth, high frequency amplifier with low power consumption |
| 01/19/1995 | DE4318531A1 Method and circuit arrangement for amplifying signals in a broad frequency range |
| 01/18/1995 | EP0634835A2 Low voltage RF amplifier and mixer with single bias block and method |
| 01/18/1995 | CN1027478C High dynamic range modulation independent feed forward amplifier network |
| 01/18/1995 | CN1027470C Integrated poly-phase power meter |
| 01/17/1995 | US5383083 Protective apparatus for power transistor |
| 01/17/1995 | US5382919 Wideband constant impedance amplifiers |
| 01/17/1995 | US5382916 Differential voltage follower |
| 01/11/1995 | EP0633657A2 Cascaded amplifier |
| 01/11/1995 | EP0633656A2 MOS differential voltage-to-current converter circuit |
| 01/11/1995 | EP0632939A1 Linear amplifier control |
| 01/10/1995 | US5381515 Two layer neural network comprised of neurons with improved input range and input offset |
| 01/10/1995 | US5381113 Differential amplifier circuit using quadritail circuit |
| 01/10/1995 | US5381110 Spurious frequency suppressor |
| 01/10/1995 | US5381108 Automatic calibration of the quadrature balance within a cartesian amplifier |
| 01/10/1995 | US5381082 High-speed, fully-isolated current source/sink |
| 01/05/1995 | WO1995001009A1 A method for a transmitter to compensate for varying loading without an isolator |
| 01/05/1995 | WO1995001005A1 Method and device for signal amplitude modulation |
| 01/05/1995 | WO1995000856A1 Measurement amplifier |
| 01/05/1995 | WO1995000855A1 Measurement amplifier |
| 01/05/1995 | CA2323915A1 A method for a transmitter to compensate for varying loading without an isolator |
| 01/04/1995 | EP0632624A1 Data transmission system using predistortion |
| 01/04/1995 | EP0632587A2 Distortion-free limiter for a power amplifier |
| 01/04/1995 | EP0632585A1 System for the bias control of an amplifier |
| 01/04/1995 | EP0632583A1 Variable gain amplifier |
| 01/04/1995 | EP0632580A2 Output amplifier stage |
| 01/04/1995 | EP0632579A2 DC control circuit in bursted data receivers |
| 01/04/1995 | EP0632575A1 Quadrature modulator |
| 01/04/1995 | EP0484360B1 Electrical switching circuit |
| 01/03/1995 | US5378997 Low noise amplifier with capacitive feedback |
| 12/31/1994 | CA2126919A1 System for controlling the bias voltage applied to an amplifier |
| 12/28/1994 | EP0631381A1 Transmitter chain for a digital radio telephone |
| 12/28/1994 | EP0631380A1 Sequential amplifier |
| 12/28/1994 | EP0630543A1 Circuitry for superimposing small, low energy signals and large, essentially higher energy signals. |
| 12/28/1994 | EP0630536A1 Audio amplifiers |
| 12/28/1994 | CN1096909A Dynamic equalizing-current network circuit with several parallel bipolar power transistors |
| 12/27/1994 | US5376900 Push-pull output stage for amplifier in integrated circuit form |
| 12/27/1994 | US5376899 Amplifier with gain stages coupled for differential error correction |
| 12/27/1994 | US5376896 Apparatus and method for reducing VCA distortion and noise |
| 12/27/1994 | US5376846 Temperature compensation circuit and method of operation |
| 12/22/1994 | WO1994029954A1 Temperature-compensated gain-controlled amplifier having a wide linear dynamic range |
| 12/22/1994 | DE4419841A1 Method for controlling the operating point of an amplifier stage |