Patents
Sitemap › H03 - Basic electronic circuitry › H03G - Control of amplification › H03G 3 - Gain control in amplifiers or frequency changers
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
01/1999
01/19/1999US5861774 Apparatus and method for automated testing of a progammable analog gain stage
01/14/1999WO1998043348A3 Radio receiver and controllable amplifier circuit
01/13/1999EP0891042A2 Amplifier
01/13/1999CN1205147A Data Comparison AGC system for VSB receiver
01/13/1999CN1204889A Programmable-gain amplifier
01/12/1999US5859880 Multi-stage squelch apparatus, and associated method, for a multi-branch receiver
01/12/1999US5859567 For amplifying a radio frequency signal into an amplified rf signal
01/12/1999US5859556 Variable gain semiconductor circuit
01/12/1999CA2133251C Striding exerciser with upwardly curved tracks
01/12/1999CA2109810C Power control circuitry for achieving wide dynamic range in a transmitter
01/12/1999CA2077440C Apparatus and method of automatic gain control in a receiver
01/07/1999WO1999000895A1 Power amplifier device
01/07/1999WO1998044654A3 Power control of rf signals with booster module
01/07/1999EP0889583A1 Reception device for microwave signals
01/07/1999EP0889582A1 Apparatus with reduced a/d dynamic range requirement in a compensating feedback system
01/07/1999EP0782797B1 Method and apparatus for temperature compensation in a time division multiplex receiver
01/05/1999US5855268 Optical sensor system for a bill validator
12/1998
12/30/1998WO1998059417A1 Gain control
12/30/1998WO1998059416A1 A differential amplifier, an integrated circuit, and a telephone
12/30/1998EP0887925A2 Gain compensating apparatus for use with amplifying portion in code division multiple access communication system
12/30/1998EP0887923A1 Tuning amplifier
12/30/1998EP0886914A1 Method for regulating power without analog control loop and related device
12/30/1998EP0656164B1 Television receiver
12/30/1998CN1041480C Arrangement for duplex transmission
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
12/29/1998US5854973 Radio receivers
12/29/1998US5854971 Output-controlled power amplifier, radio communication terminal and radio communication base station
12/29/1998US5854845 In an amplifier
12/29/1998US5854572 Compact structure of automatic gain control circuit
12/29/1998US5854571 Method and apparatus for controlling a peak envelope power of a power amplifier
12/23/1998WO1998058447A1 Transceiver stage for a mobile telecommunications unit
12/23/1998EP0886373A1 Gain control for a CDMA receiver
12/23/1998EP0721715A4 Multiple antenna home base for digital cordless telephones
12/22/1998US5852772 Receiver IF system with active filters
12/22/1998US5852770 Transmission power control device for a portable terminal
12/17/1998WO1998057442A2 An arrangement and a method relating to a radio unit
12/17/1998WO1998057421A1 Power level sense circuit
12/17/1998CA2293334A1 An arrangement and a method relating to a radio unit
12/16/1998EP0884839A2 Method and apparatus for automatically compensating sound volume
12/16/1998CN1202046A Mobile communication transmitter capable of selectively activating amplifiers
12/15/1998CA2152114C Method and apparatus for generating transmitting wave
12/15/1998CA2025002C Automatic mixer apparatus
12/10/1998WO1998056108A2 Automatic gain control circuit, e.g. for use in a hard disk drive
12/09/1998EP0883250A2 Mobile communication transmitter capable of selectively activating amplifiers
12/09/1998EP0883242A2 Radio receiver and method of operation
12/09/1998CN1201566A Gain controlling method and receiver
12/09/1998CN1201307A Radio equipment for time-division multi-address system and regulation circuit for output electric-level of synthesizer
12/08/1998US5847624 Discrete increment signal processing system using parallel branched N-state attenuator networks
12/08/1998US5847609 Automatic gain control circuit for selectively providing an accurate linearity or a broad bandwidth
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
12/03/1998WO1998054833A1 Improved transimpedance amplifier
12/03/1998WO1998038735A3 Signal processing device
12/02/1998CN1200848A Linear digital automatic gain control
12/02/1998CN1200598A Voltage control type control apparatus capable of achieving correct control characteristic without increasing interface line number
12/01/1998US5844992 Fuzzy logic device for automatic sound control
12/01/1998US5844983 Method and apparatus for controlling a telephone ring signal
12/01/1998US5844938 Carrier based data operated squelch
12/01/1998US5844445 Feedback type pre-amplifier
12/01/1998US5844444 Wide dynamic input range transconductor-based amplifier circuit for speech signal processing
11/1998
11/26/1998WO1998053579A1 Receiver with controllable amplifier means
11/26/1998WO1998037711A3 A receiver unit for a central terminal of a wireless telecommunications system
11/25/1998EP0880256A2 Portable telephone device
11/25/1998EP0879483A1 Temperature compensated logarithmic detector
11/25/1998CN1199957A Receiving loop tank for cellular telephone
11/24/1998US5841820 Data comparison AGC system for VSB receiver
11/24/1998US5841320 Variable gain amplifying device
11/24/1998US5841319 Method and apparatus for controlling gain of an amplifier by comparing a detected output envelope and a reference signal
11/19/1998WO1998052298A2 Method for adjusting power of transmitter, and control arrangement
11/18/1998CN1199282A Transconductance variable method and circuit, and variable bandwidth filter and variable gain amplifier using same
11/17/1998US5838803 Muting circuit
11/17/1998US5838785 Voice level controller
11/17/1998US5838198 Gain control for parallel-arranged differential pairs
11/17/1998US5838194 Constant settling time automatic gain control circuits
11/17/1998US5838188 Reference voltage generation circuit
11/11/1998EP0877481A2 Transconductance variable method and circuit, and variable bandwidth filter and variable gain amplifier using same
11/10/1998US5835527 Spread spectrum adaptive power control system and method
11/10/1998US5833584 Striding exerciser with upwardly curved tracks
11/05/1998WO1998049771A1 Battery life extending technique for mobile wireless applications
11/05/1998WO1998049770A1 Differential pair gain control stage
11/05/1998WO1998049769A1 Variable gain amplifier with improved linearity and bandwidth
11/05/1998CA2285236A1 Battery life extending technique for mobile wireless applications
11/04/1998EP0876004A2 Transmitter gain controller
11/04/1998EP0875989A2 Automatic gain control circuit
11/04/1998CN1198281A Receiver architecture for the receiving of angle-modulated/anglekeyed carrier signals
11/03/1998US5832374 Radio transceiver including transmitter power control circuit
11/03/1998US5832373 Output power control device
11/03/1998US5831888 Automatic gain control circuit and method
11/03/1998US5831479 Power delivery system and method of controlling the power delivery system for use in a radio frequency system
11/03/1998US5831477 Power amplifier system with variable output
10/1998
10/29/1998WO1998048510A2 An arrangement and method relating to signal power amplification
10/28/1998EP0874452A2 Reception circuit for cellular telephone
10/28/1998EP0874451A2 Variable gain amplifier
10/28/1998EP0873589A1 Methods and apparatus for signal amplitude control systems
10/28/1998EP0749645B1 An amplifier circuit
10/28/1998CN1197339A Mobile radio wave receiver with adaptive automatic gain control
10/27/1998US5828953 Mobile radio communication apparatus adaptable to power supply voltage change
10/27/1998US5828692 Baseband demodulator for polar or rectangular modulated signal in a cordless spread spectrum telephone
10/27/1998US5828314 Pager with adaptable alarm
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