Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
09/2001
09/26/2001EP0753229B1 Adaptive telephone interface
09/26/2001CN1315076A Optical amplifiers and optical transmission line
09/26/2001CN1315075A Control of power ratios for in-phase and quadrature channels in a communications system
09/26/2001CN1314767A Transmitter circuit with frequency self optimization
09/26/2001CN1071983C Radio frequency receiver
09/26/2001CN1071959C Radio transceiver including transmitter power control circuit
09/25/2001US6295445 Automatic gain controlling method, automatic gain controlling apparatus, and communication receiving apparatus
09/25/2001US6295444 Non-predictive tone-coded-squelch frequency determination method
09/25/2001US6295442 Amplitude modulation to phase modulation cancellation method in an RF amplifier
09/20/2001WO2001069809A1 Cdma receiving method and cdma receiving apparatus
09/20/2001WO2001069780A1 Method and arrangement for gain control
09/20/2001US20010023177 Radio telephone apparatus
09/20/2001US20010022841 Sound system
09/20/2001US20010022821 Amplitude deviation correction circuit
09/20/2001US20010022533 Rf-fet bias and switching circuit based on a quasi-open loop regulation
09/19/2001EP1134904A2 Transmitter circuit with frequency self-optimization
09/19/2001CN1314025A Methods for adjusting audio signals responsive to changes ina power supply level and related communications devices
09/19/2001CN1071519C Filter with feed-forward AGC
09/18/2001US6292654 Digital noise blanker for communications systems and methods therefor
09/18/2001US6292232 Receiving apparatus
09/18/2001US6292122 Digital-to-analog interface circuit having adjustable time response
09/16/2001CA2334157A1 Transmitter circuit with frequency self-optimization
09/13/2001WO2001067621A2 Transmitter architectures for communications systems
09/13/2001WO2001067599A2 Rf-fet bias and switching circuit based on a quasi-open loop regulation
09/13/2001WO2001067598A1 Method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio
09/13/2001WO2001067597A1 Preamplifier
09/13/2001WO2001067595A1 Instrumentation amplifier
09/13/2001WO2001067593A2 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio
09/13/2001WO2001067591A2 Digital-to-analog interface circuit having adjustable time response
09/13/2001US20010021644 Intermodulation control device and method in mobile communication system
09/13/2001US20010020872 High frequency power amplifier, and communication apparatus
09/13/2001US20010020867 Automatic gain controller and automatic gain control method, and radio communications apparatus equipped with automatic gain control function
09/13/2001CA2739554A1 Transmitter architectures for communications systems
09/13/2001CA2739521A1 Transmitter architectures for communications systems
09/13/2001CA2702881A1 Transmitter architectures for communications systems
09/13/2001CA2402468A1 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio
09/12/2001EP1131885A1 Circuit and method for linearizing amplitude modulation in a power amplifier
09/12/2001CN1312971A Digital automatic gain control
09/12/2001CN1312656A Colourity overload protection device
09/12/2001CN1312612A Low-noise amplifier with automatically linear-intensified and controllable gain and method thereof
09/11/2001US6289487 Efficient modified viterbi decoder
09/11/2001US6289205 Transmitter for communication devices
09/11/2001US6289044 Automatic gain control circuit for a modem receiver
09/11/2001US6288612 Radio communication apparatus and radio frequency power amplifier
09/11/2001US6288609 Gain controllable low noise amplifier with automatic linearity enhancement and method of doing same
09/11/2001CA2206751C Reception automatic gain control system and method
09/07/2001WO2001065758A2 Multimode fast attack automatic gain control (agc) loop for narrow band receivers
09/07/2001WO2001065722A2 Method and transmission circuit for producing a transmission signal
09/07/2001WO2001065686A1 Automatic gain control method, automatic gain control processor, and demodulator
09/07/2001WO2001065685A1 Method and transmitting circuit for generating a transmission signal
09/07/2001WO2001065684A1 Method and transmission circuit for producing a transmission signal
09/07/2001WO2001065683A1 Method and transmission circuit for generating a transmission signal
09/07/2001WO2001065682A2 Method and transmission circuit for producing a transmission signal
09/06/2001US20010019102 Light reception circuit capable of receiving large level optical signal
09/05/2001EP1130772A2 Automatic gain controller and automatic gain control method, and radio communications apparatus equipped with automatic gain control function
09/05/2001EP1130735A2 Circuit arrangement for regulating the transmission power of a battery operated radio device
09/05/2001EP1129600A1 Method for in-situ measuring and in-situ correcting or adjusting a signal process in a hearing aid with a reference signal processor
09/05/2001EP1129522A1 Method and apparatus for automatic gain control
09/05/2001EP0684703B1 Circuit for removing random fm noise
09/05/2001CN1311919A Systems and methods of management of current consumption and performance in a receiver down converter of a wireless device
09/04/2001US6285863 System and method for providing automatic gain control with high dynamic range
09/04/2001US6285257 Feedback type variable gain amplifier
09/04/2001US6285251 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
08/2001
08/30/2001WO2001063795A1 Envelope - tracking amplifier having improved gain, terminal device for mobile communication using the same, and method for improving gain relating thereto
08/30/2001WO2001063762A1 Receiver
08/30/2001WO2001063754A1 Electronic circuit comprising a differential pair provided with degeneration means for degenerating a transconductance of the differential pair
08/30/2001US20010018335 Down converter using C/N ratio correcting circuit of base station for mobile communication network
08/30/2001US20010018331 Transmission system
08/30/2001DE10056517A1 Amplifier with variable gain has gain controller that generates gain control signals applied to first and third amplifier stages to set them to predetermined gains, fixed gain second stage
08/29/2001EP1128555A1 Receiver
08/29/2001EP1128550A2 Noise reducer and noise reduction method with expanded gate pulses
08/29/2001EP1127408A1 Variable gain amplifier with improved linearity
08/28/2001US6282296 Audio reproducing apparatus
08/28/2001US6282218 Control circuit with automatic DC offset
08/28/2001US6282042 Data processing apparatus and methods
08/28/2001US6281945 VSB—dependent automatic gain control
08/28/2001US6281757 High frequency signal amplifying circuit and a receiver using the same
08/23/2001WO2001061885A1 Method for repeating isofrequency signals and isofrequency signal repeater
08/23/2001WO2001061865A1 Current-to-voltage converter with controllable gain, and signal processing circuit comprising such converter
08/23/2001WO2001061845A1 Method and circuit arrangement for the regulation of the transmission power of a transmitter
08/23/2001WO2001061844A1 Radio receiver and radio receiving method
08/23/2001US20010016475 Noise reducer and noise reduction method with expanded gate pulses
08/23/2001US20010016048 Audio reproduction arrangement and telephone terminal
08/23/2001US20010016019 Automatic gain control circuit, data communication device and automatic gain control method
08/23/2001DE10004434A1 Verfahren und Schaltungsanordnung zur Regelung der Ausgangsleistung eines Leistungsverstärkers Method and circuit for controlling the output power of a power amplifier
08/22/2001EP1126599A2 Automatic gain control method and apparatus, and radio communications apparatus having automatic gain control function
08/22/2001EP1126598A2 Oscillator output amplifier
08/22/2001EP1126458A1 Method for adjustment of volume control of a digital sound recording
08/22/2001EP1126457A2 A circuit and method for controlling the gain of an amplifier
08/22/2001EP1126456A2 A circuit and method for controlling the gain of an amplifier based on the sum of samples of the amplified signal
08/22/2001CN1309832A Pre-recorded sigma delta values for power amplifier control
08/22/2001CN1309475A Automatic gain control method and device, and radio communication apparatus with said function
08/21/2001US6278751 Receiver for digital voice broadcasting
08/21/2001US6278324 Analog amplifier with monotonic transfer function
08/21/2001US6278322 Transconductance amplifier and automatic gain control device using it
08/16/2001WO2001060056A2 Automatic gain control
08/16/2001WO2001008442A3 Method and agc device for controlling the amplification of a microphone with an integrated amplifier with a working point which can be adjusted by external wiring
08/16/2001US20010014613 Communication system, device and method
08/16/2001US20010014593 High-efficiency modulating rf amplifier
08/16/2001US20010014587 Transmission power control device capable of varying a transmission power at a wide range