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)
06/1998
06/16/1998US5767744 Lightweight fixed frequency discontinuous resonant power supply for audio amplifiers
06/16/1998US5767743 Radio frequency power amplifier having a tertiary harmonic wave feedback circuit
06/16/1998US5767741 Self compensating differential circuit
06/16/1998US5767538 Integrated photodiode/transimpedance amplifier
06/11/1998WO1998025339A1 Dynamic biasing circuit for amplifiers
06/10/1998EP0847135A2 High frequency variable gain amplifier device
06/10/1998EP0847134A1 Amplifier linearizing circuit
06/10/1998DE19712571C1 Automobile amplifier with overload protection
06/09/1998US5764464 Low input bias current circuit
06/09/1998US5764460 Circuit for the protection against overcurrents in power electronic devices and corresponding method
06/09/1998US5764104 Method and system for reducing noise in a hybrid matrix amplifier
06/09/1998US5764103 Switching amplifiers into and out of circuits with reduced output noise
06/09/1998US5764098 Bias circuit
06/04/1998WO1998024232A1 Improved charge amplifier for mos imaging array
06/04/1998WO1998024176A1 Charge sensitive amplifier with high common mode signal rejection
06/03/1998EP0845857A2 Amplifier system
06/03/1998CN1183673A Multiband high-efficiency linear power amplifier and high-efficiency power amplifier
06/02/1998US5761316 Variable and reactive audio power amplifier
06/02/1998US5760652 Integrated circuit device
06/02/1998US5760651 Inductorless voltage biasing circuit for and Ac-coupled amplifier
06/02/1998US5760650 Coplanar waveguide amplifier
06/02/1998US5760649 Buffer amplifier with output non-linearity compensation and adjustable gain
06/02/1998US5760648 For converting a differential input voltage to single-ended output voltages
06/02/1998US5760646 Feed-forward correction loop with adaptive predistortion injection for linearization of RF power amplifier
06/02/1998US5760629 DC offset compensation device
05/1998
05/28/1998WO1998023068A1 Transmitter
05/28/1998DE19645821A1 Small signal amplifier using transistors and resistors
05/27/1998EP0844732A1 Linearizer bridge circuit
05/27/1998EP0844493A1 Spurious frequency suppressor
05/27/1998EP0609435B1 Apparatus for compensating of phase rotation in a final amplifier stage
05/27/1998CN2282750Y Radiation stand for power amplifying circuit
05/26/1998US5758269 High-efficient configurable power amplifier for use in a portable unit
05/26/1998US5757940 Electric volume controller
05/26/1998US5757340 Amplifier with a second active element being cascode connected to a first active element and having a control electrode connected to a constant voltage
05/26/1998US5757237 Method for dynamically biasing an amplifier and circuit therefor
05/26/1998US5757236 Amplifier bias circuit and method
05/26/1998US5757233 Complementary transistor circuit and amplifier and CRT display device using the same
05/26/1998US5757231 Feed-forward amplifying device and base station with feed-forward amplifying device
05/26/1998US5757229 Bias circuit for a power amplifier
05/26/1998US5757219 Apparatus for and method of autozeroing the input of a charge-to-voltage converter
05/26/1998CA2101840C Transconductance amplifier circuit
05/26/1998CA2072318C Amplifying circuit arrangement
05/22/1998WO1998021823A1 A protective circuit
05/22/1998WO1998021821A1 An arrangement for reducing and stabilizing the amplification of a darlington-coupled output stage
05/22/1998WO1998021820A1 Arrangement for protecting the output transistors in a power amplifier
05/22/1998CA2271709A1 A protective circuit
05/22/1998CA2271113A1 Arrangement for protecting the output transistors in a power amplifier
05/22/1998CA2271111A1 An arrangement for reducing and stabilizing the amplification of a darlington-coupled output stage
05/20/1998EP0843457A2 Method of and system architecture for high speed dual symmetric full duplex operation of asymmetric digital subscriber lines
05/20/1998EP0843409A1 Power amplifier apparatus
05/20/1998EP0843408A1 Amplification circuit which includes an input current compensation device
05/20/1998EP0842561A1 Device with amplifier means including safety means, and with filter means connected to the amplifier means
05/20/1998EP0758501A4 Adaptive predistorter
05/20/1998CN1182270A Apparatus for compensating frequency characteristic of reproduction audio signal
05/20/1998CN1182267A 输入信号放大器 Input signal amplifier
05/19/1998US5754066 Output stage for buffering an electrical signal and method for performing the same
05/14/1998DE19733173A1 Microwave power amplifier with at least two stages
05/14/1998DE19720019A1 Linearer Leistungsverstärker und Verfahren zu seinem Betrieb Linear power amplifier and method for its operation
05/13/1998EP0841747A2 Fast buffer
05/13/1998EP0841746A2 Fast buffer
05/13/1998EP0840951A2 Amplifier with active-bootstrapped gain-enhancement technique
05/13/1998EP0840950A1 Field effect transistor cable television line amplifier
05/13/1998EP0584312B1 Rf power amplifier with linearizattion
05/12/1998US5751250 Low distortion power sharing amplifier network
05/12/1998US5751192 Integrated circuit and method for generating a transimpedance function
05/12/1998US5751189 Charge amplifier for MOS imaging array and method of making same
05/12/1998US5751181 Power amplifier circuit
05/12/1998US5751154 capacitive sensor interface circuit
05/12/1998US5751025 High voltage current limiter and method for making
05/07/1998WO1998019391A2 Pulse modulation power amplifier with enhanced cascade control method
05/06/1998EP0840444A1 Power amplifier apparatus
05/06/1998EP0840299A1 Input signal amplifier
05/06/1998EP0839405A1 Error path control for feed-forward amplifier
05/06/1998CN1180943A Filter with low-noise amplifier
05/05/1998US5748753 High power audio subwoofer
05/05/1998US5748747 Digital signal processor for adding harmonic content to digital audio signal
05/05/1998US5748678 Radio communications apparatus
05/05/1998US5748428 Pulse width modulation and protection circuit
05/05/1998US5748042 Method for altering a difference frequency signal and amplifier circuit thereof
05/05/1998US5748038 Method for amplifier training in a linear power amplifier
05/05/1998US5748037 Radio transmitter power amplifier calibration
04/1998
04/29/1998EP0838914A2 Circuit arrangement for amplifying an electrical signal converted from an optical signal
04/29/1998EP0838104A1 Method and apparatus for amplifying an electrical signal
04/29/1998EP0732004B1 Switch-mode power supply for a power amplifier
04/29/1998EP0655176B1 Amplifier stage with low thermal distortion
04/28/1998US5745857 Gaas power amplifier for analog/digital dual-mode cellular phones
04/28/1998US5745526 Radio transmitters and methods of operation
04/28/1998US5745010 Operational amplifier
04/28/1998US5745006 Method of compensating for distortion in an amplifier
04/23/1998WO1998016997A1 Multi-stage high efficiency linear power amplifier
04/23/1998DE19651081C1 Voltage-to-current or current-current converter e.g for FM transmission system of mobile radio
04/22/1998EP0837559A1 High efficiency linear power amplifier of plural frequency bands and high efficiency power amplifier
04/22/1998EP0837557A1 High frequency intensity amplifier circuitry arrangement for indoor cable television
04/22/1998CN1179647A Power amplifier circuit
04/21/1998US5742205 Field effect transistor cable television line amplifier
04/21/1998US5742201 Polar envelope correction mechanism for enhancing linearity of RF/microwave power amplifier
04/21/1998US5742093 Frequency compensator
04/16/1998WO1998016006A1 Coplanar waveguide amplifier
04/15/1998EP0836275A1 High speed switched OP-AMP for low supply voltage applications
04/15/1998EP0836272A1 Low-noise amplifier arrangement
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