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)
12/1999
12/01/1999EP0960475A1 Power saving device for radio communication terminal
12/01/1999EP0960474A2 A communication system, device and method
12/01/1999CN1237287A Differential amplifier, integrated circuit, and telephone
11/1999
11/30/1999US5995853 Power control technique of radio communication system
11/30/1999US5995816 Frequency hopping communications receivers
11/30/1999US5995538 Spread spectrum multipath processor system and method
11/30/1999US5994965 Silicon carbide high frequency high power amplifier
11/30/1999US5994964 Gain-control-type transistor power amplifier
11/30/1999US5994940 Clock generator having a phase locked loop
11/30/1999CA2154194C Method of stabilizing the level of an audio signal in television broadcasting
11/25/1999WO1999060710A2 Wide frequency range couplers and detectors for power detection in multiple frequency band systems
11/25/1999WO1999060698A1 Amplifier with dynamically adaptable supply current
11/24/1999CN1236504A Automatic gain control circuit, e. g. for use in a hard disk drive
11/23/1999US5991611 Volume control device for receiver of block coded speech signals
11/23/1999US5991603 Narrow-band communication apparatus
11/23/1999US5991106 AGC circuit of disk storage apparatus
11/23/1999US5990817 A/D conversion device having a programmable transfer characteristic
11/23/1999US5990746 Amplifier system
11/23/1999US5990741 Variable gain amplifier
11/23/1999US5990735 Method and apparatus for high efficiency power amplification
11/18/1999DE19921758A1 Digitaler Teilnehmerleitungsempfänger Digital subscriber line receiver
11/17/1999EP0956649A1 Adaptive radio receiver apparatus
11/17/1999EP0956648A1 Transmitter combiner arrangement
11/17/1999EP0956642A1 Low power, high linearity log-linear control method and apparatus
11/17/1999EP0806087A4 Method and apparatus for a linear transmitter
11/17/1999EP0670087B1 Method and arrangement for controlling the operation of a high-frequency power amplifier
11/17/1999CN1235712A Muting microphone in radiocommunication systems
11/16/1999US5987075 FSK signal receiver
11/16/1999US5986501 Low voltage, beta immune variable gain amplifier with high supply voltage rejection
11/10/1999EP0954903A1 Method for controlling power gain
11/10/1999EP0954823A1 Optical sensor system for a bill validator
11/10/1999CN1234937A Receiver with controllable amplifier means
11/10/1999CN1234649A Gain-changeable amplifier circuit
11/09/1999US5983183 Audio automatic gain control system
11/09/1999US5982821 Frequency discriminator and method and receiver incorporating same
11/09/1999US5982235 Automatic gain control circuit
11/03/1999EP0954132A2 Receiver for Digital Audio Broadcasting comprising a dynamic range control system
11/03/1999EP0954096A2 ALC circuit for a transmitter device
11/03/1999EP0739549B1 Method and apparatus for calibrating a gain control circuit
11/02/1999US5977833 Power supply circuit for a power amplifier of a mobile radio communication terminal
11/02/1999US5977831 Hybrid system for control and monitoring of an amplifier
11/02/1999US5977824 Circuit feedback loop with monitored loop gain
10/1999
10/28/1999DE19818217A1 Auxiliary device for television receiver
10/27/1999EP0952644A2 Dynamic control for laser diode drivers
10/27/1999EP0951887A2 Absorbent article
10/27/1999EP0951799A1 Audio system comprising audio signal processing circuit
10/26/1999US5974093 Device and method for automatically controlling transmission power
10/26/1999US5974041 Efficient parallel-stage power amplifier
10/26/1999US5974040 Receiver and transmitter-receiver having variable attenuator to avoid saturation by a strong signal
10/26/1999US5973560 Automatic gain control circuit using multiplier and negative feedback system
10/20/1999EP0951201A2 Audio reproducing apparatus
10/20/1999EP0951143A2 Technique for effectively rendering power amplification and control in wireless communications
10/20/1999EP0725998A4 Apparatus and method for shaping and power controlling a signal in a transmitter
10/19/1999US5970399 Radio channel squelching systems
10/19/1999US5969573 Amplifier circuit with small offset voltage influence
10/18/1999CA2265143A1 Technique for effectively rendering power amplification and control in wireless communications
10/14/1999WO1999052206A1 Hybrid chireix/doherty amplifiers power waveform synthesis
10/14/1999WO1999044283A3 A device for generating an ac amplitude-dependent indicator
10/13/1999EP0949812A1 Automatic gain control apparatus
10/13/1999EP0948787A1 Improved audio reproduction arrangement and telephone terminal
10/13/1999CN1231544A Equipment and method for controlling transmitting-power
10/12/1999US5964865 Object code allocation in multiple processor systems
10/12/1999CA2194935C Tube type power amplifier with distortion control
10/07/1999WO1999050956A1 Wide-dynamic-range variable-gain amplifier
10/07/1999CA2324109A1 Wide-dynamic-range variable-gain amplifier
10/05/1999US5963855 Method for extending the RSSI range and radio transceiver operating in accordance with this method
10/05/1999US5963090 Automatic predistortion adjusting circuit having stable non-linear characteristics regardless of input signal frequency
10/05/1999US5963087 Gain control circuit and method for providing gain control of a variable amplifier using a pilot signal
10/05/1999US5963081 Circuit arrangement having at least two signal paths
10/05/1999US5963064 Linear transfer voltage to current circuit
10/05/1999CA2178815C Device and method for multiplexing signal
09/1999
09/30/1999WO1999049571A1 Buffer circuit
09/30/1999CA2324567A1 Buffer circuit
09/29/1999EP0945979A2 Ampifying device for mobile TDMA-telephone and mobile telephone
09/29/1999EP0945978A1 Apparatus for stabilizing transmission output
09/29/1999CN1230308A Data transmission equipment
09/28/1999US5960333 Circuitry and method for power calibration
09/28/1999US5960092 Sound processing apparatus and method with fading effect
09/28/1999US5959497 Process for controlling the power of the transmission amplifier of radio equipment
09/28/1999CA2108233C Method and apparatus for reducing the peak-to-average power in multi-carrier rf communication systems
09/23/1999DE19812488A1 Verstärkervorrichtung für ein mobiles TDMA-Funktelefon und mobiles Funktelefon Amplifier apparatus for a mobile TDMA radiotelephone and mobile radiotelephone
09/23/1999DE19811839A1 Circuit for controlling amplifier output power
09/22/1999EP0944166A1 Automatic dynamic range controlling circuit
09/22/1999EP0943186A2 Method for adjusting power of transmitter, and control arrangement
09/22/1999CN1229543A Method for adjusting power of transmitter and control arrangement
09/21/1999US5955927 RF power transistor control using collector current
09/21/1999US5955925 Digital AGC circuit
09/21/1999US5955921 Signal amplifier circuit
09/16/1999WO1999046855A2 Radio receiver and gain controlled amplifier therefor
09/16/1999DE19910371A1 Receiver with automatic RF or HF signal gain control circuit
09/15/1999EP0941575A1 Efficient parallel-stage power amplifier
09/15/1999EP0807338A4 Differential feed-forward amplifier power control for a radio receiver system
09/14/1999US5953690 Intelligent fiberoptic receivers and method of operating and manufacturing the same
09/14/1999US5952887 Feedback amplifier and optical receiver using the same
09/14/1999US5952880 Variable-gain amplifier with pseudo-logarithmic gain control for generating two control currents
09/14/1999CA2175914C Receiver path selection based on burst-type in a time division multiple access receiver
09/10/1999WO1999045637A1 Amplifier with adjustable bias current
09/10/1999CA2322787A1 Amplifier with adjustable bias current
09/09/1999DE19809522A1 Radio receiver with RDS overcomes difficulty of setting travel announcement amplitudes
09/09/1999DE19805547C1 Digital radio receiver for mobile radio
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