Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
05/2002
05/30/2002WO2002043049A1 Method for control of a unit comprising an acoustic output device
05/30/2002US20020065062 Automatic gsm mobile power
05/30/2002US20020065048 Method and apparatus for compensating for distortion in radio apparatus
05/30/2002US20020063597 Automatic gain control system and related method
05/29/2002EP1209870A1 Automatic gain control and wireless communication device
05/29/2002DE10056877A1 Automatic gain control for remotely-controlled vehicle electronic locking system, adjusts power supplied to amplifier to change receiver sensitivity
05/29/2002CN1351424A Receiving automatic gain controlling circuit
05/28/2002US6397090 Power saving device for radio communication terminal
05/28/2002US6397077 Wide frequency range couplers and detectors for power detection in multiple frequency band systems
05/28/2002US6397050 Multiband squelch method and apparatus
05/28/2002US6397049 Two-way radio with improved squelch
05/28/2002US6396879 Transmission power controller and transmission power control method
05/28/2002US6396614 Optical signal receiving circuit and method for receiving optical signal
05/28/2002US6396337 Transistor circuit with direct-coupled stages
05/28/2002CA2063364C Cellular radio-telephone receiver employing improved technique for generating an indication of received signal strength
05/23/2002WO2002041510A2 Receiver sensitivity
05/23/2002WO2001065682A3 Method and transmission circuit for producing a transmission signal
05/23/2002US20020061738 System and method for inverting automatic gain control (AGC) and soft limiting
05/23/2002US20020061109 Audio system
05/23/2002US20020061040 Auto power control circuit for laser diode
05/23/2002US20020060598 Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor
05/22/2002EP1206834A1 Methods for calibration of radio devices at room temperature
05/22/2002CN1350365A Multichannel digital automatic gain control method and controller
05/22/2002CN1085478C Output control unit of mobile communication system and its controlling method
05/22/2002CN1085441C Programmable-gain amplifier
05/21/2002US6392483 Feed-forward amplifier
05/21/2002US6392479 Automatic gain controller and automatic gain control method, and radio communications apparatus equipped with automatic gain control function
05/21/2002US6392478 Amplification device having an adjustable bandwidth
05/16/2002WO2001091522A3 Method and apparatus for programmable power curve and wave generator
05/16/2002WO2001080436A3 Dual-mode communications transmitter
05/16/2002WO2001058013A3 Method and circuit arrangement for controlling the output power of a power amplifier
05/16/2002US20020058485 Transmission power control circuit
05/16/2002US20020057804 Circuit and method for automatically limiting the amplitude of broadcast audio signals
05/15/2002CN1084993C Method for demodulating digitally modulated data signals
05/15/2002CN1084969C Spurious signal reduction in RF transmitter integrated circuits
05/15/2002CN1084963C Tuning amplifier
05/14/2002US6389303 Booster for amplifying the transmission output of a handy phone
05/14/2002US6389272 Receiver with auto gain control circuit of RF signal
05/14/2002US6389078 Configurable circuits for field programmable radio frequency communications equipment and methods therefor
05/14/2002US6388799 Optical device and imaging system
05/14/2002US6388530 Microwave amplifier implemented by heterojunction field effect transistors
05/14/2002US6388529 Grounded emitter amplifier and a radio communication device using the same
05/14/2002US6388526 Methods and apparatus for high performance reception of radio frequency communication signals
05/14/2002US6388500 Gain controller using switched capacitors
05/10/2002WO2002037673A1 Adjustment of transmitter bias current based on transmitter gain
05/10/2002WO2002037668A1 Method and apparatus for controlling an amplifier
05/10/2002WO2001080423A3 Method and apparatus for dynamic sound optimization
05/09/2002US20020055349 Self-tuned millimeter wave RF Transceiver module
05/09/2002US20020055341 Variable gain amplifier device
05/09/2002US20020054583 Automatic gain control for a time division duplex receiver
05/08/2002EP1204216A1 Method and apparatus for distortion compensation of radio device
05/08/2002EP1203447A1 Method and device for operating a radio frequency power amplifier
05/08/2002EP1203446A2 Automatic gain control in a zero intermediate frequency radio device
05/08/2002EP1142136A4 Control of gain and power consumption in a power amplifier
05/07/2002US6385440 Mobile communication receiver with asymmetric muting control
05/07/2002US6385436 Distortion compensation circuit
05/07/2002US6384689 Preamplifier for optical receivers
05/07/2002US6384686 Radio communication apparatus and radio frequency power amplifier
05/07/2002CA2140668C Semiconductor emulation of vacuum tubes
05/02/2002WO2002035732A1 Selectively activated agc signal measurement unit
05/02/2002WO2001067621A3 Transmitter architectures for communications systems
05/02/2002WO2001047106A3 Transmitter power amplifier ramping method
05/02/2002US20020052665 Utilizing vacuum tubes in computer audio circuitry
05/02/2002US20020051546 Variable attack & release system and method
05/02/2002US20020050857 Variable gain amplifier
05/02/2002EP1202467A1 Signal transmitter with impulse control of amplification
05/02/2002EP1202448A1 Method and device for adapting transmission power levels in transmission systems
05/02/2002EP1201029A1 Automatic gain control and offset correction
05/02/2002EP1201025A1 Driving circuits for switch mode rf power amplifiers
05/02/2002EP1201024A1 High-efficiency modulating rf amplifier
05/02/2002DE10052104A1 Automatically regulated influencing of loudness involves assessing sum of all sounds in context by pattern comparison and carrying out loudness regulation of one or more acoustic units
05/02/2002DE10050688A1 Controller for automobile radio with loudness matching is switchable between processing signals connection at remote control connection as remote control or ambient loudness signals
05/01/2002CN1084114C Mobile radio unit with automatic gain control circuit and method for automatic gain control in said mobile radio unit
04/2002
04/30/2002US6381286 Cartesian loop transmitter
04/30/2002US6381265 Field programmable modulator-demodulator arrangement for radio frequency communications equipment and method therefor
04/30/2002US6381212 Power sharing amplifier system for amplifying multiple input signals with shared power amplifiers
04/25/2002WO2002033844A2 Communications systems
04/25/2002WO2002033821A2 Mobile telephone comprising an improved transmitter
04/25/2002WO2002033819A2 Amplifier having stacked current-driven current drivers
04/25/2002WO2002011349A3 Successive log video pad power detector and method
04/25/2002WO2001056178A3 Method for masking interruptions during playback of received radio signals
04/25/2002US20020048967 Fabrication process of a semiconductor integrated circuit device
04/25/2002US20020048267 Selectively activated AGC signal measurement unit
04/25/2002US20020048109 dB linear variable gain amplifier
04/25/2002US20020047811 Antenna unit and receiving circuit
04/25/2002US20020047744 Method and circuit for controlling baseband gain
04/25/2002US20020047732 Peak-hold circuit with variable time constant
04/25/2002DE10050330A1 Signal strength compensation device for mobile radio receiver uses mean value of signal strength for previously received data symbols
04/24/2002CN1346188A CDMA radio transmitting equipment and transmitting power control and transmitter-receiver
04/23/2002US6377784 High-efficiency modulation RF amplifier
04/23/2002CA2088750C Linearized output control of a nonlinear amplifier
04/18/2002WO2002032018A2 Time slot structure and automatic gain control method for a wireless communication system
04/18/2002WO2002031996A2 Adjustment of bias current in a first integrated circuit based on a signal gain of a second integrated circuit
04/18/2002WO2002031992A2 Signal strength compensation for mobile radio channels that considerably vary with time
04/18/2002WO2002031973A2 Gain linearizer for variable gain amplifiers
04/18/2002WO2002031972A2 Amplification circuit with improved linearity
04/18/2002US20020045429 Communications systems
04/18/2002US20020044100 Radio station with optimized impedance
04/18/2002US20020044017 High frequency power amplifier module and wireless communication apparatus
04/18/2002CA2425464A1 Automatic gain control for a time division duplex receiver