Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
07/2002
07/16/2002CA2236282C Automatic gain control circuit
07/11/2002WO2002054606A2 Zero intermediate frequency receiver using packet acquisition and channel tracking
07/11/2002WO2002054580A2 Method and switching circuit for controlling the output power of a high-frequency amplifier for producing a high-frequency signal having a variable envelope curve
07/11/2002US20020090920 High-efficiency modulating RF amplifier
07/11/2002US20020090042 Automatic gain control methods and apparatus suitable for use in OFDM receivers
07/11/2002DE10060332A1 Verfahren und Vorrichtung zur Millimeterwellen-Leistungsregelung bei einem V-Band-TR-Modul Method and device for millimeter wave power control with a V-band TR module
07/11/2002DE10043744C1 Empfangsschaltung für Mobilfunkempfänger mit automatischer Verstärkungssteuerung Receiving circuit for mobile radio receiver with automatic gain control
07/10/2002EP0801856B1 Spread-spectrum system and method for adaptive power control in a cellular communication network
07/10/2002CN1358284A Constant voltage supply circuit, substrate of constant voltage supply circuit, and method of applying constant voltage
07/10/2002CN1087578C Mobile telephone with automatic level control means of sound signal
07/10/2002CN1087521C Method and apparatus for amplifying signal
07/09/2002US6418303 Fast attack automatic gain control (AGC) loop and methodology for narrow band receivers
07/09/2002US6418301 Methods for radio calibration at room temperature
07/09/2002US6417730 Automatic gain control system and related method
07/09/2002US6417729 Linear power control loop
07/09/2002US6417503 Optical sensor circuit with output changing means
07/04/2002US20020086651 Precision automatic gain control circuit
07/04/2002US20020085725 System output control method and apparatus
07/04/2002US20020085624 Multipath processor
07/04/2002US20020084846 Selectable diode bias for power amplifer control in a wireless telephone handset
07/04/2002US20020084844 High efficiency stage-switching CDMA power amplifier
07/04/2002DE10100151A1 Verfahren und Schaltkreis zum Regeln der Ausgangsleistung eines Hochfrequenzverstärkers zur Erzeugung eines Hochfrequenzsignals mit variabler Hüllkurve A method and circuit for regulating the output power of a high frequency amplifier for generating a high frequency signal with a variable envelope
07/03/2002EP1219026A2 Transmitter power amplifier ramping method
07/03/2002EP1219024A1 Amplifier
07/03/2002EP0796526B1 Method and arrangement in a transmission system
07/03/2002EP0787383B1 Automatic sensitivity control
06/2002
06/27/2002WO2002051091A1 Phase error detection and correction for differential signals
06/27/2002WO2002051005A1 Smoothing circuit
06/27/2002WO2002005423A3 Agc circuit
06/27/2002WO2002003161A3 Bis circuit for establishing a plurality of bias voltages
06/27/2002WO2001084741A3 Output power control of a transmitter
06/27/2002WO2001065722A3 Method and transmission circuit for producing a transmission signal
06/27/2002US20020082052 Method for operating a base station by prelimiting an output signal
06/27/2002US20020080981 Signal processing method, program, and signal processing apparatus
06/27/2002US20020080890 Method and apparatus for a transceiver having a constant power output
06/27/2002US20020080763 Base station having an adaptive RF amplifier prelimiter
06/27/2002US20020080733 User equipment (UE) having an adaptive RF amplifier prelimiter
06/27/2002US20020079946 Gain controller using switched capacitors
06/27/2002DE10150472A1 Integrierte Halbleiterschaltungsvorrichtung mit Verstärker mit variabler Verstärkung A semiconductor integrated circuit device having variable gain amplifier
06/27/2002DE10063438A1 Kommunikationsvorrichtung Communication device
06/26/2002EP1217871A2 Acoustic apparatus
06/26/2002EP1217755A2 Communication device
06/26/2002EP1217730A2 Method for suppressing noise peaks in a wanted signal
06/26/2002EP1217727A1 Selectable diode bias for power amplifier control in a wireless telephone handset
06/26/2002EP1216503A1 Artificial ramping of transmit power for burst transmissions
06/26/2002EP1216502A1 Control loop for digital signals
06/26/2002CN1355973A Automatic gain control for improved decoding of multi-carrier signal
06/26/2002CN1086873C Radio communicat apparatus for synthesizing radio signal
06/26/2002CN1086870C Automatic gain controller and method in direct series broad spectrum communication system
06/26/2002CN1086863C Amplifier circuit for transmitter
06/25/2002US6411235 Dynamic range extension with gain correction
06/20/2002WO2002019545A3 System for closed loop power control using a linear or a non-linear power amplifier
06/20/2002US20020077824 Speech synthesizer
06/20/2002US20020077074 RF receiver with power off control
06/20/2002US20020076066 Acoustic apparatus
06/20/2002US20020075944 Automatic gain control circuit and method for direct sequence spread spectrum receiver
06/20/2002US20020074560 Semiconductor integrated circuit device with variable gain amplifier
06/20/2002US20020074409 Instant synchronous automatic gain control apparatus
06/19/2002EP1215816A2 Power controllers for amplitude modulation
06/18/2002US6408193 Cellular telephone
06/18/2002US6408168 Receiver with automatic gain control circuit
06/18/2002US6408166 Method for controlling gain of transmission signal
06/18/2002US6407639 Radio frequency device including a power amplifier circuit and a stabilizer circuit, and mobile transceiver terminal including such a device
06/13/2002WO2002047260A2 Am receiver with audio filtering means
06/13/2002WO2002047245A2 Method and device for regulating the power of millimeter waves for a v-band tr module
06/13/2002WO2002029968A3 Quardrature direct-conversion demodolator using dc offset compensation
06/13/2002WO2001080436B1 Dual-mode communications transmitter
06/13/2002US20020072341 Radio receiver that changes function according to the output of an internal voice-only detector
06/13/2002US20020072339 Transmitter and wireless communication device
06/13/2002US20020071507 Reception AGC circuit
06/13/2002US20020071408 CDMA wireless transmission apparatus, CDMA wireless transmitter-receiver system and transmission power control method of the CDMA wireless transmission apparatus
06/13/2002US20020070802 Linear gain control amplifier
06/13/2002US20020070797 System and method for adjusting separate devices concurrently
06/13/2002US20020070788 Exponential conversion circuit and variable gain circuit
06/13/2002DE10060017A1 Detection method and device for an acoustic signal from an emergency vehicle siren, also detects the approach direction so that the driver of a sound-proofed vehicle can take appropriate action
06/13/2002DE10058786A1 Verfahren zum Steuerung eines eine akustische Ausgabeeinrichtung aufweisenden Geräts A method for controlling an acoustic output device having device
06/12/2002EP1213832A1 AM receiver with audio filtering means
06/12/2002EP0972339B1 Power amplication system with intelligent control of amplifier modules
06/12/2002EP0645063B1 Receiver automatic gain control
06/12/2002CN1353894A Signal processor for multiplex communication system and signal processing method therefor
06/11/2002US6404891 Volume adjustment as a function of transmission quality
06/11/2002US6404284 Amplifier bias adjustment circuit to maintain high-output third-order intermodulation distortion performance
06/11/2002US6404282 Preamplification circuit
06/11/2002US6404281 Wide dynamic range transimpedance amplifier
06/06/2002WO2002045260A1 Amplifier circuit
06/06/2002WO2002045259A2 Signal level control
06/06/2002WO2002045257A2 Automatic gain control system and related method
06/06/2002WO2002001748A3 Improved multi-carrier receiver for a radio telecommunications network
06/06/2002US20020068540 Communication receiver having reduced dynamic range by reducing the fixed range of the amplifier and increasing the variable gain via a gain control circuit
06/06/2002US20020067204 Amplitude control of an alternating signal generated by an electronic device such as an oscillator circuit
06/05/2002EP1210769A1 Dually adjustable electromechanical means for handling and system of these, and dually adjustable digital potentiometer
06/05/2002EP1210768A1 Adaptive rf amplifier prelimiter
06/05/2002EP1210767A2 Method and apparatus for automatically adjusting speaker and microphone gains within a mobile telephone
06/05/2002EP1210766A1 Automatic gain control loop for frequency conversion of quadrature signals
06/05/2002EP1210765A1 Filter banked gain control of audio in a noisy environment
06/05/2002EP0972360B1 Power control of rf signals with booster module
06/05/2002CN1086064C Temperature compensated wide dynanic range power detection circuitry for portable RF transmission terminals
06/05/2002CN1086047C Signal-processing preamplifier for optical disc system
06/04/2002US6400933 Amplifier
05/2002
05/30/2002WO2002043253A2 A radio receiver