| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
|---|
| 12/01/1999 | EP0763224B1 Voltage regulator |
| 12/01/1999 | CN1237287A Differential amplifier, integrated circuit, and telephone |
| 12/01/1999 | CN1237037A Active low-pass filter |
| 11/30/1999 | US5994966 Transistorized two-port variable-conductance network |
| 11/30/1999 | US5994965 Silicon carbide high frequency high power amplifier |
| 11/30/1999 | US5994963 Amplifier circuit and multistage amplifier circuit |
| 11/30/1999 | US5994961 Temperature compensated decibel linear variable gain amplifier |
| 11/30/1999 | US5994960 High speed switched op-amp for low supply voltage applications |
| 11/30/1999 | US5994959 Linearized amplifier core |
| 11/30/1999 | US5994958 Amplifier arrangement |
| 11/30/1999 | US5994957 Feed forward amplifier improvement |
| 11/30/1999 | US5994956 Inductive-capacitive feedback compensation for amplifier systems |
| 11/30/1999 | US5994942 Buffer circuit with wide dynamic range |
| 11/30/1999 | US5994941 Operating voltage point compensation circuit for a transistorized circuit |
| 11/30/1999 | US5994755 Analog-to-digital converter and method of fabrication |
| 11/26/1999 | CA2272740A1 Novel biasing scheme for gaasfet amplifier |
| 11/26/1999 | CA2238955A1 Novel biasing scheme for gaasfet amplifier |
| 11/25/1999 | WO1999060698A1 Amplifier with dynamically adaptable supply current |
| 11/24/1999 | CN1236503A An arrangement for reducing and stabilizing the amplification of a Darlington-coupled output stage |
| 11/23/1999 | US5990751 Method and apparatus for improving power transfer efficiency of an amplifier system |
| 11/23/1999 | US5990750 Amplifier and driver system with multichannel operation |
| 11/23/1999 | US5990749 Device for pole splitting in amplifiers |
| 11/23/1999 | US5990748 Frequency self-compensated operational amplifier |
| 11/23/1999 | US5990746 Amplifier system |
| 11/23/1999 | US5990744 Wide band process independent gain controllable amplifier stage |
| 11/23/1999 | US5990741 Variable gain amplifier |
| 11/23/1999 | US5990740 Differential amplifier with adjustable linearity |
| 11/23/1999 | US5990738 Compensation system and methods for a linear power amplifier |
| 11/23/1999 | US5990735 Method and apparatus for high efficiency power amplification |
| 11/23/1999 | US5990734 System and methods for stimulating and training a power amplifier during non-transmission events |
| 11/23/1999 | US5990727 Current reference circuit having both a PTAT subcircuit and an inverse PTAT subcircuit |
| 11/23/1999 | US5990711 Constant current driving circuit |
| 11/18/1999 | WO1999059285A1 Method for linearization of rf transmission electronics using baseband pre-distortion in t/r compensation pilot signals |
| 11/18/1999 | WO1999059242A2 A method of reducing distortion and noise of square-wave pulses, a circuit for generating minimally distorted pulses and use of method and circuit |
| 11/18/1999 | WO1999059241A2 A method of reducing distortion and noise of square-wave pulses, a circuit for generating minimally distorted pulses and use of method and circuit |
| 11/17/1999 | EP0957574A2 Multistage amplifier circuit with improved nested transconductance capacitance compensation |
| 11/17/1999 | EP0956648A1 Transmitter combiner arrangement |
| 11/17/1999 | EP0806087A4 Method and apparatus for a linear transmitter |
| 11/17/1999 | CN1235711A Fulse modulation power amplifier with enhanced cascade control method |
| 11/17/1999 | CN1235710A Protecting circuit for output transistors in power amplifier |
| 11/16/1999 | US5987312 Offset-compensated linear RF detector having a detector part and a linearizer part |
| 11/16/1999 | US5986927 Autozeroing floating-gate amplifier |
| 11/16/1999 | US5986900 Ground loop elimination |
| 11/16/1999 | US5986840 Amplifier with capacitive feedback for driving a magneto-resistive head |
| 11/16/1999 | US5986509 Transistor amplifier stage |
| 11/16/1999 | US5986508 Bias concept for intrinsic gain stabilization over temperature |
| 11/16/1999 | US5986503 Power amplifier with an idle current trimmed and a method of trimming the power amplifier |
| 11/16/1999 | US5986500 Combined linear power amplifying device and method |
| 11/16/1999 | US5986499 Pilot signal detection system using band reject filter |
| 11/16/1999 | US5986498 Audio direct from power supply |
| 11/11/1999 | WO1999057806A1 Linearization method for amplifier, and amplifier arrangement |
| 11/10/1999 | EP0955724A1 Short-circuit protection circuit, particularly for power transistors |
| 11/10/1999 | CN1234922A Low distortion power amplifier |
| 11/10/1999 | CN1234584A Reference-voltage generating circuit providing stable output voltage |
| 11/10/1999 | CN1046385C A method for a transmitter to compensate for varying loading without an isolator |
| 11/09/1999 | US5982236 High-frequency power amplifier |
| 11/09/1999 | US5982234 Low noise arrangement or an amplifier |
| 11/09/1999 | US5982233 Device and method for compensating phase distortion |
| 11/09/1999 | CA2024850C Amplifying with directly coupled, cascaded amplifiers |
| 11/04/1999 | WO1999056400A1 Method for neutralising a transmitter tube |
| 11/04/1999 | WO1999046766A3 Optical read/write apparatus |
| 11/03/1999 | EP0954094A1 Amplifier output stage with parasitic currents limiter |
| 11/03/1999 | EP0953232A1 Compensation of delay in linearization loop of power amplifier |
| 11/02/1999 | US5978690 Reducing power consumption in low noise radiophone amplifiers |
| 11/02/1999 | US5978662 Circuit arrangement comprising a Cartesian amplifier |
| 11/02/1999 | US5978487 Spectrum displaying device for audio device |
| 11/02/1999 | US5977834 Preamplifier system |
| 11/02/1999 | US5977832 Method of biasing an MOS IC to operate at the zero temperature coefficient point |
| 11/02/1999 | US5977830 Low noise transistor module and amplifier |
| 11/02/1999 | US5977829 Low distortion current feedback amplifier with dynamic biasing |
| 11/02/1999 | US5977827 Circuit arrangement including a differential amplifier stage |
| 11/02/1999 | US5977826 Cascaded error correction in a feed forward amplifier |
| 11/02/1999 | US5977825 Electronic circuit for linearization of an amplifier |
| 11/02/1999 | US5977824 Circuit feedback loop with monitored loop gain |
| 11/02/1999 | US5977823 Semiconductor amplifier circuit |
| 11/02/1999 | US5977818 Multi-input transistor circuit and multi-input transconductance circuit |
| 11/02/1999 | CA2189852C Dual voltage voltage regulator with foldback current limiting |
| 10/27/1999 | CN1233358A Method of and apparatus for filtering intermodulation products in a radiocommunication system |
| 10/26/1999 | US5974041 Efficient parallel-stage power amplifier |
| 10/26/1999 | US5973897 Electrostatic discharge (ESD) protection circuit with reduced node capacitance |
| 10/26/1999 | US5973569 Short-circuit protection and over-current modulation to maximize audio amplifier output power |
| 10/26/1999 | US5973565 DC bias feedback circuit for MESFET bias stability |
| 10/26/1999 | US5973564 Operational amplifier push-pull output stage with low quiescent current |
| 10/26/1999 | US5973563 High power output stage with temperature stable precisely controlled quiescent current and inherent short circuit protection |
| 10/26/1999 | US5973561 Differential clamp for amplifier circuits |
| 10/26/1999 | US5973558 Differential amplifier circuit |
| 10/26/1999 | US5973557 High efficiency linear power amplifier of plural frequency bands and high efficiency power amplifier |
| 10/26/1999 | US5973556 Delta-modulated power supply |
| 10/26/1999 | US5973555 Power amplifier apparatus |
| 10/26/1999 | US5973540 Ladder tracking buffer amplifier |
| 10/26/1999 | US5973368 Monolithic class D amplifier |
| 10/26/1999 | US5973314 Photoelectric converting device which prevents power source ripple from mixing into an output signal |
| 10/21/1999 | WO1999039449A9 Amplifier module with two power amplifiers for dual band cellular phones |
| 10/21/1999 | DE19817283A1 Schaltungsanordnung für einen optischen Empfänger Circuit arrangement for an optical receiver |
| 10/21/1999 | DE19815923A1 Steuereinrichtung für einen Audioverstärker Control device for an audio amplifier |
| 10/21/1999 | DE19803937C1 MOS-cascade transistor for use in CMOS-circuit |
| 10/20/1999 | EP0951143A2 Technique for effectively rendering power amplification and control in wireless communications |
| 10/20/1999 | EP0951141A2 Audio direct from power supply |
| 10/20/1999 | EP0951140A2 Circuit for an optical receiver |
| 10/20/1999 | EP0951139A2 Fast adaptive wideband power amplifier feed forward linearizer using a RLS parameter tracking alogrithm |