Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers › H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272)
01/1999
01/12/1999US5859567 For amplifying a radio frequency signal into an amplified rf signal
01/12/1999US5859565 Cathode-follower high-fidelity power amplifier
01/12/1999US5859564 Integrated circuit
01/07/1999WO1999000909A1 Power delivery system and method of controlling the power delivery system for use in a radio frequency system
01/07/1999WO1999000895A1 Power amplifier device
01/07/1999WO1999000894A2 Amplifier suitable for cable-network applications
01/07/1999EP0889583A1 Reception device for microwave signals
01/07/1999EP0889582A1 Apparatus with reduced a/d dynamic range requirement in a compensating feedback system
01/07/1999EP0888670A2 Linear high-frequency amplifier with high input impedance and high power efficiency
01/05/1999US5856760 Overdrive protection clamp scheme for feedback amplifiers
01/05/1999US5856758 Low distortion driver employing positive feedback for reducing power loss in output impedance that effectively matches the impedance of driven line
01/05/1999US5856756 For generating an internal voltage from an external voltage
01/05/1999US5856695 BiCMOS devices
12/1998
12/30/1998WO1998059416A1 A differential amplifier, an integrated circuit, and a telephone
12/30/1998EP0887924A2 High efficiency RF amplifier
12/30/1998EP0887922A1 Predistortion to improve linearity of an amplifier
12/30/1998EP0676097B1 Method and apparatus for signal processing using reference signals
12/30/1998CA2241060A1 High efficiency rf amplifier
12/30/1998CA2241020A1 Apparatus with reduced a/d dynamic range requirement in a compensating feedback system
12/30/1998CA2241010A1 Adaptive pre-distortion apparatus for linearizing an amplifier output within a data transmission system
12/29/1998US5854971 Output-controlled power amplifier, radio communication terminal and radio communication base station
12/29/1998US5854811 Circuit and method for compensating for nonlinear distortion of input signal
12/29/1998US5854611 In a wireless communication system
12/29/1998US5854578 Active circuit having a temperature stable bias
12/29/1998US5854573 Low-voltage multipath-miller-zero-compensated CMOs class-AB operational amplifier
12/29/1998US5854571 Method and apparatus for controlling a peak envelope power of a power amplifier
12/29/1998US5854428 Vibration gyroscope
12/29/1998CA2157255C Feed-forward amplifier with expanded linearity
12/23/1998WO1998058411A1 Photodetector circuit
12/23/1998EP0886321A1 Threshold voltage adjusting method for a MIS device and charge detecting device
12/23/1998EP0885484A1 Fat sound creation means
12/23/1998EP0885482A1 Pre-distortion for a non-linear transmission path in the high frequency range
12/23/1998CN1202761A Ultra fidelity open-loop constant-current transistor amplifier
12/23/1998CA2290965A1 Photodetector circuit
12/22/1998US5851864 Method of fabricating BiCMOS devices
12/17/1998WO1998057422A1 High-order multipath operational amplifier with dynamic offset reduction, controlled saturation current limiting, and current feedback for enhanced conditional stability
12/16/1998EP0884838A1 Amplifier
12/16/1998EP0884837A2 Circuitry comprising a differential amplifying stage
12/16/1998EP0884602A1 Low noise preamplifier for a magnetoresistive data transducer
12/16/1998EP0777932A4 Active bias for radio frequency power amplifier
12/16/1998CN1202039A Bandgap reference circuit and method
12/15/1998US5850162 Linearization of an amplifier employing modified feedforward correction
12/15/1998US5850128 Power amplifier for an inductive load
12/15/1998CA2152114C Method and apparatus for generating transmitting wave
12/10/1998WO1998056107A1 High efficiency power amplification method and apparatus
12/09/1998EP0883243A2 A matching circuit and a method for matching a transistor circuit
12/09/1998EP0883241A1 Bias voltage controlled parallel active components
12/09/1998EP0883240A1 Inverting amplifying circuit
12/09/1998EP0883239A1 Preamplifier for amplifying signal voltages of a signal source with high source impedance
12/09/1998EP0883052A1 Integrated circuit having selective bias of transistors for low voltage and low standby current and related methods
12/09/1998EP0882325A1 Charge sensitive amplifier with high common mode signal rejection
12/09/1998CN1201294A Reactive-current-trimmed power amplifier and trimming method thereof
12/09/1998CN1201293A Linear power amplifier and method for eliminating intermodulation distortion signals
12/09/1998CN1201292A Back-amplifying circuit
12/08/1998US5848165 Fat sound creation means
12/08/1998US5847670 Analog to digital converter
12/08/1998US5847610 Protection circuit for an audio amplifier
12/08/1998US5847608 Amplifier circuit operating with single bias supply and less sensitive to fluctuation of threshold
12/08/1998US5847604 Linearizer for linearizing a non-linear component controlled by control voltage
12/08/1998US5847603 Automatic control system for reducing distortion produced by electrical circuits
12/08/1998US5847602 Method and apparatus for linearizing an efficient class D/E power amplifier using delta modulation
12/08/1998US5847599 Stable fast settling sense amplifier
12/03/1998WO1998038734A3 Amplifier arrangement
12/02/1998EP0881807A1 Transmitter
12/02/1998EP0880822A1 Method and apparatus providing limiting transimpedance amplification
12/02/1998CN1200848A Linear digital automatic gain control
12/01/1998US5844445 Feedback type pre-amplifier
12/01/1998US5844443 Linear high-frequency amplifier with high input impedance and high power efficiency
11/1998
11/28/1998CA2215448A1 Amplifier, signal source circuit and power supply
11/26/1998WO1998035437A3 An amplifier circuit, a transmitter and a wireless telephone
11/25/1998EP0880225A2 Amplifier with reduced input capacitance
11/25/1998EP0879501A1 Power combiner
11/24/1998US5842140 Waste energy control and management in power amplifiers
11/24/1998US5841875 Digital audio signal processor with harmonics modification
11/24/1998US5841603 Arrangement comprising a magnetic write head, and write amplifier with capacitive feed-forward compensation
11/24/1998US5841320 Variable gain amplifying device
11/24/1998US5841317 Differential amplifier circuit with a high through put rate and reduced power consumption
11/24/1998US5841312 Gating circuit having current measuring and regulating elements and a temperature measuring transistor
11/24/1998US5841308 Amplifier for cancelling noise between circuit systems
11/24/1998CA2139717C Multi-stage solid state amplifier that emulates tube distortion
11/19/1998WO1998052278A2 An amplified mos biasing circuit for avoiding latch-up
11/18/1998EP0878904A2 A power amplifier with an idle current trimmed and a method of trimming the power amplifier
11/18/1998EP0878056A1 Linear transmitter using predistortion
11/18/1998EP0878053A1 Linearity enhancing circuit for power amplifier
11/17/1998US5838803 Muting circuit
11/17/1998US5838526 Load actuation circuit with a surge protecting function
11/17/1998US5838196 Transformer-coupled amplifier
11/17/1998US5838195 Reduction of second order harmonic distortion in high power TWT amplifiers
11/17/1998US5838188 Reference voltage generation circuit
11/17/1998US5838149 Voltage control means having a reduced sensitivity to temperature variations
11/17/1998US5838031 Low noise-high linearity HEMT-HBT composite
11/12/1998WO1998051047A1 Method and apparatus for linear transmission by direct inverse modeling
11/12/1998WO1998051007A1 Method and apparatus for efficient signal power amplification
11/12/1998WO1998051006A1 Driver circuit with pull down npn transistor
11/12/1998WO1998051005A1 Frequency selective predistortion in a linear transmitter
11/12/1998CA2289208A1 Method and apparatus for linear transmission by direct inverse modeling
11/11/1998EP0877478A1 Apparatus with a wide band amplifier circuit
11/11/1998EP0877477A2 Optical transmitter having pre-modulation amplification
11/11/1998EP0877467A1 Device for reducing the ripple component of the signal fed to a load by a switch mode power amplifier
11/10/1998US5834978 From overcurrent in a mobile wireless phone
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