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)
08/1998
08/04/1998US5789979 Reduction of excessive spectral power distribution from class-C saturated amplification of a pulsed-carrier signal
08/04/1998US5789690 Electronic sound source having reduced spurious emissions
07/1998
07/30/1998WO1998033273A1 Method for controlling power gain
07/30/1998WO1998033272A1 High dynamic range variable gain amplifier
07/30/1998DE19702280A1 Verfahren zur Regelung der Leistungsverstärkung Method for regulating the power amplification
07/29/1998CN1189073A Apparatus and method for tracking power level of received signal in code division multiple access communication system
07/29/1998CN1189021A Power supply circuit for power amplifier of mobile radio communication terminal
07/28/1998US5786730 Variable gain amplifier providing substantially uniform magnitude output signal
07/23/1998DE19702007A1 HF power oscillator e.g. for medical application
07/22/1998EP0854582A1 Click noise reduction method in a data transmission system
07/22/1998EP0696392B1 Method and device for automatically controlling gain in receiver circuits
07/21/1998US5784689 Output control circuit for transmission power amplifying circuit
07/21/1998US5784476 Audio signal reproduction apparatus
07/21/1998US5784457 Multimedia communication apparatus and method with audio codec selection and audio mating when setting codes
07/21/1998US5784410 Reception automatic gain control system and method
07/21/1998US5784241 Electromagnetic-noise protection circuit
07/16/1998WO1998031082A1 Laser wavelength control circuit having automatic dc offset and gain adjustment
07/15/1998EP0853391A2 Method and apparatus for enhancing transmitter circuit efficiency of mobile radio units
07/15/1998EP0852866A2 Receiver architecture for the receiving of angle-modulated/ angle-keyed carrier signals
07/15/1998EP0852844A1 Circuit arrangement comprising a power amplifier stage
07/14/1998US5781849 Spurious signal reduction in RF transmitter integrated circuits
07/14/1998US5781588 FSK signal receiver
07/14/1998US5781066 Pulse waveform generator
07/08/1998EP0852434A2 Transmitter with high-frequency power amplifier for a communication device
07/07/1998US5778077 Automatic volume adjusting device and method
07/02/1998WO1998028843A1 Method for regulating power without analog control loop and related device
07/01/1998EP0851618A2 Method and system for controlling remote multipoint stations
07/01/1998EP0851577A1 Power supplying device for power amplification in a mobile telephone terminal
07/01/1998EP0850509A1 Linearized digital automatic gain control
07/01/1998CN1186575A Temperature compensated automatic gain control
07/01/1998CN1186388A Tranmission/reception apparatus
06/1998
06/30/1998US5774797 Portable telephone
06/30/1998US5774085 Apparatus and method for obtaining proper output signal in which gain and DC component are regulated based upon on measured amplitude distribution
06/30/1998CA2223865A1 Power supply device for a power amplifier of a mobile radiocommunications terminal
06/25/1998WO1998008324A3 Microprocessor-controlled full-duplex speakerphone using automatic gain control
06/23/1998US5771464 Radio communication apparatus for use in dual-mode radio communication system and having gain variable control means dependent on the set mode
06/23/1998US5771297 Electronic audio device and method of operation
06/18/1998WO1998026503A1 Efficient parallel-stage power amplifier
06/17/1998EP0848495A2 Signal amplifier circuit
06/17/1998EP0848494A1 Feed forward amplifier system and method
06/17/1998EP0847621A1 Highly responsive automatic output power control based on a differential amplifier
06/17/1998EP0847620A1 Circuit arrangement comprising a feedback loop
06/16/1998US5768698 Radio receiving system with adaptive antennas having reduced variation of amplification
06/16/1998US5768695 Apparatus and method for providing a flexible ramp up and ramp down of the sections of a radio in a wireless local area network
06/16/1998US5768694 Automatic gain control circuit with input and output signal detectors operating in equalized conditions
06/16/1998US5768601 Apparatus for eliminating audio noise when power is cycled to a computer
06/16/1998US5767724 Electronic clamping circuit
06/16/1998CA2093844C Power detection technique for automatic amplifier power control
06/11/1998WO1998025340A1 Automatic dynamic range controlling circuit
06/10/1998EP0847193A1 Intermediate frequency amplifier circuit for radiowave receiver
06/10/1998EP0847135A2 High frequency variable gain amplifier device
06/10/1998EP0846369A1 Variable-gain amplifier with pseudo-logarithmic gain control
06/10/1998EP0846368A1 An apparatus and method for providing a flexible ramp up and ramp down of the sections of a radio in a wireless local area network
06/10/1998CN1184570A Secondary surveillance radar
06/09/1998US5764780 Circuit for eliminating noise of audio signal
06/09/1998US5764689 Variable digital automatic gain control in a cordless direct sequence spread spectrum telephone
06/09/1998US5764107 Highly responsive automatic output power control based on a differential amplifier
06/03/1998EP0845921A1 Method and circuit for regulating the volume in digital hearing aids
06/03/1998EP0845871A2 Intermediate frequency amplifier circuit for use in receive and transmit mode
06/03/1998EP0845857A2 Amplifier system
06/02/1998US5761321 Volume controller
06/02/1998US5761251 Dual automatic gain control and DC offset correction circuit for QAM demodulation
06/02/1998US5760629 DC offset compensation device
05/1998
05/28/1998DE19648871A1 Automatic volume controller e.g. for television
05/27/1998EP0844805A1 A compression amplifier
05/27/1998EP0843951A1 Circuit, audio system and method for processing signals, and a harmonics generator
05/27/1998EP0582578B1 A method and a device for controlling a radio transmitter
05/27/1998CN1183181A AGC circuit arrangement for a tuner
05/26/1998US5758274 Radio frequency receiver with automatic gain control
05/26/1998US5758273 Receiver dynamic range extension method
05/26/1998US5758272 Automatic gain controlling mechanism of radio frequency amplifier
05/26/1998US5758270 Level control circuit for receiver
05/26/1998US5757233 Complementary transistor circuit and amplifier and CRT display device using the same
05/26/1998US5757229 Bias circuit for a power amplifier
05/20/1998EP0843502A1 Howling detection and prevention circuit and a loudspeaker system employing the same
05/20/1998EP0843420A2 Mobile station having drift-free pulsed power detection method and apparatus
05/20/1998EP0611509B1 Variable gain amplifier
05/20/1998CN1182267A 输入信号放大器 Input signal amplifier
05/13/1998CN1181659A Method for acquiring rapid automatic gain control (AGC) response in narrow band receiver
05/12/1998US5752172 Distributed transmitter output power control circuit and method for a radio telephone
05/12/1998US5752171 Transmission level control system with selectively fixed or variable amplication control
05/12/1998US5752170 Transmitters for radio telephone base stations
05/12/1998US5751826 Monolithically integrable mixer network for a mixer console
05/12/1998US5751824 Method of stabilizing the level of an audio signal in television broadcasting
05/12/1998US5751822 Ambient noise suppression circuit
05/12/1998US5751190 Gain-controlled amplifier and distributed amplifier
05/12/1998CA2220761A1 A cross-modulation restricting radio receiver
05/07/1998WO1998019392A1 Squelch apparatus, and associated method, for a multi-branch receiver
05/07/1998CA2269929A1 Squelch apparatus, and associated method, for a multi-branch receiver
05/06/1998EP0840445A2 Circuit for controlling the level of a radio frequency signal
05/06/1998EP0840299A1 Input signal amplifier
05/06/1998EP0839406A2 Gain control
05/05/1998US5749056 Audio ramping technique for a radio
05/05/1998US5748754 Sound system gain and equalization circuit
05/05/1998US5748751 Signal amplifier system with improved echo cancellation
05/05/1998US5748041 AGC amplifier circuit using triple-tail cell
05/05/1998US5748038 Method for amplifier training in a linear power amplifier
05/05/1998US5748027 Low power, high linearity log-linear control method and apparatus
04/1998
04/29/1998EP0838904A1 Analogue to digital conversion device with programmable transfer characteristic
04/29/1998EP0838896A2 Radio receiver gain control
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