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)
08/2003
08/27/2003CN1119855C Amplifier with adjustable bias current
08/26/2003US6611679 Device and method for controlling a receiving amplifier in a radio terminal
08/26/2003US6611548 Multipath processor
08/21/2003WO2003017468A3 A system and method for minimizing dissipation in rf power amplifiers
08/21/2003WO2002089323A3 Circuit arrangement and method for adjusting the operating point of a power amplifier
08/21/2003WO2002084865A3 Device for regulation of the working point of power amplifiers working in a quasi-linear manner for high frequency useful signals by means of two control circuits
08/21/2003WO2002054580A3 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
08/21/2003WO2002027926A3 Method for optimizing the level of rf signals by comparing quality of the rf signals under different operation modes
08/21/2003WO2002015388A3 Amplifier circuits and methods to provide smooth transition of amplifier outputs during powering sequences
08/21/2003US20030157913 CMOS current mode RF detector and method
08/21/2003US20030157910 Receiver circuit for mobile radio receivers with automatic gain control
08/21/2003US20030157905 Transmitter and associated method for reducing the adjacent channel power during wireless communications
08/21/2003US20030156666 Automatic gain control for digitized RF signal processing
08/21/2003US20030155979 Device comprising a symmetrical amplifier
08/21/2003US20030155973 Variable gain amplifier
08/21/2003US20030155972 Switched gain amplifier circuit
08/21/2003US20030155971 Power servo-loop, an RF signal amplifier circuit, and an RF signal transmitter fitted with such a circuit
08/20/2003EP1337049A2 Radio base station
08/20/2003EP1337038A2 Power control loop, radiofrequency amplifying circuit, and transmitter for radiofrequency signals having such a circuit
08/20/2003EP1336251A2 A radio receiver
08/20/2003CN1437793A Method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio
08/20/2003CN1437792A Negative feedback gain control for common electrode transistor
08/20/2003CN1118946C Power controller
08/20/2003CN1118945C Radio transmitter and radio communication method
08/20/2003CN1118927C Communication equipment
08/20/2003CN1118813C Input signal amplifier
08/19/2003US6608710 Automatic gain control circuit and optical receiver
08/19/2003US6608524 Automatic gain control circuit
08/19/2003US6608502 Compact transmitter detection circuit with a wide dynamic range
08/14/2003WO2003067800A2 Radio frequency characterization of cable plant and corresponding calibration of communication equipment communicating via the cable plant
08/14/2003WO2003067755A1 Semiconductor circuit
08/14/2003WO2002011283A3 Amplitude limitation
08/14/2003US20030153292 Method for masking interruptions on playback of received radio signals
08/14/2003US20030153291 AGC circuit of receiver using several local oscillation frequencies
08/14/2003US20030153289 Digitized automatic gain control system and methods for a controlled gain receiver
08/14/2003US20030152241 Audio processing
08/14/2003US20030151461 Automatic gain adjustment circuit and amplifier using the same
08/14/2003US20030151443 DC offset cancel circuit
08/13/2003EP1335490A2 Receiving apparatus with an AGC function
08/13/2003CN1436403A Programmable gain amplifier for use in data network
08/13/2003CN1435951A Base band circuit of receiver and low frequency cut-off frequency controlling method
08/13/2003CN1435945A Power amplifier clipping circuit for minimized output of distortion
08/12/2003US6606483 Dual open and closed loop linear transmitter
08/12/2003US6606284 Gain controlling apparatus and method, information reproducing apparatus and method, and information recording apparatus and method
08/07/2003WO2003065600A1 Direct conversion receiver and dc offset reducing method
08/07/2003WO2003065574A2 Variable impedance load for a variable gain radio frequency amplifier
08/07/2003WO2002045257A3 Automatic gain control system and related method
08/07/2003US20030149991 Radio frequency characterization of cable plant and corresponding calibration of communication equipment communicating via the cable plant
08/07/2003US20030148747 Radio base station
08/07/2003US20030148746 Dual speed squelch circuit and method
08/07/2003US20030148745 Automatic gain control
08/07/2003US20030147481 Method and controlling apparatus for controlling agc unit
08/07/2003US20030147428 Limiting amplifier modulator driver
08/06/2003EP1333633A1 Waveform shaping method and equipment
08/06/2003EP1110309B1 Optical amplifiers and optical transmission line
08/06/2003EP1036434B1 Automatic gain-controlled vhf/uhf antenna tuning apparatus
08/06/2003EP0839406B1 Gain control
08/06/2003CN1117430C Gain control method and circuit
08/05/2003US6603825 Automatic gain control for a receiver and method therefor
08/05/2003US6603351 Power amplifier with gain change compensation
08/05/2003US6603350 Regulator device for controlling the power of a transmitter
08/05/2003CA2318146C Gain control amplifier, variable gain and automatic gain control amplifiers including differential circuit transistors and current splitter
07/2003
07/31/2003WO2003063383A2 Edge power detector/controller
07/31/2003WO2003063345A2 Dual gain amplification low noise amplifier
07/31/2003WO2003063338A2 Direct conversion of low power high linearity receiver
07/31/2003WO2002027924A3 Apparatus and method for optimizing the level of rf signals based upon the information stored on a memory
07/31/2003US20030143968 Automatic gain control method and device
07/31/2003US20030143967 AMPS receiver system using a zero-IF architecture
07/31/2003US20030143864 Fabrication process of a semiconductor integrated circuit device
07/31/2003US20030142767 Base band circuit of receiver and low cut-off frequency control method
07/31/2003US20030142659 Automatic gain control for communication receivers
07/31/2003US20030141932 Communication semiconductor integrated circuit device and wireless communication system
07/31/2003US20030141928 Power amplifier clipping circuit for minimizing output distortion
07/31/2003US20030141927 Variable impedance load for a variable gain radio frequency amplifier
07/30/2003EP1331778A2 Waveform shaping method and equipment
07/30/2003EP1330886A2 Automatic gain control for a time division duplex receiver
07/30/2003EP1330885A2 Signal strength compensation for mobile radio channels that considerably vary with time
07/30/2003EP1330872A1 Adjustment of transmitter bias current based on transmitter gain
07/30/2003EP1330870A1 Method and apparatus for controlling an amplifier
07/30/2003CN1433242A High-frequency power amplifier
07/30/2003CN1116735C Hybrid Chireix/Doherty amplifiers power waveform synthesis
07/29/2003US6600377 Gain control amplifier
07/29/2003US6600374 Collective automatic gain control
07/29/2003CA2298928C Linear power control loop
07/29/2003CA2155432C Circuit for removing random fm noise
07/24/2003WO2003017506A8 Device and method for offset calibration of the power control signal of radio devices
07/24/2003WO2002054606A3 Zero intermediate frequency receiver using packet acquisition and channel tracking
07/24/2003WO2002027925A3 Apparatus and method for optimizing the level of rf signals
07/24/2003US20030139166 Direct conversion receiver architecture
07/24/2003US20030139161 Direct conversion of low power high linearity receiver
07/24/2003US20030139160 Method and apparatus of a fast digital automatic gain control circuit
07/24/2003US20030139157 AGC circuit of an FM receiver that reduces interference while maintaining high reception sensitivity
07/24/2003US20030139153 Edge power detector/controller
07/24/2003US20030138118 Method for control of a unit comprising an acoustic output device
07/24/2003US20030138117 System and method for the automated detection, identification and reduction of multi-channel acoustical feedback
07/24/2003US20030138034 Direct conversion RF transceiver with automatic frequency control
07/24/2003US20030138032 Direct conversion RF transceiver for wireless communications
07/24/2003US20030137352 Variable gain amplifier circuitry in automatic gain control
07/24/2003US20030137347 High frequency power amplifier and wireless communication module
07/23/2003EP1330063A1 Signal multiplexer
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