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)
10/2003
10/02/2003WO2003081891A1 Automatic adjustments of audio alert characteristics of an alert device using ambient noise levels
10/02/2003WO2003081791A1 Transmission power control apparatus and method thereof
10/02/2003WO2003081768A2 Improving the efficiency of power amplifiers in devices using transmit beamforming
10/02/2003US20030187529 Computer audio system
10/02/2003US20030186665 Gain control for communications device
10/02/2003US20030185409 Noise reduction method
10/02/2003US20030185408 Fast wavelet estimation of weak bio-signals using novel algorithms for generating multiple additional data frames
10/02/2003US20030185321 Combined multiplexer and switched gain circuit
10/02/2003US20030185250 Analog multiplexer and variable gain amplifier for intermediate frequency applications
10/02/2003US20030184382 High frequency amplifier
10/02/2003US20030184377 Quad switched gain circuit
10/01/2003EP1349269A1 Rf output power control for mobile phones with a variable dc/dc converter
10/01/2003CN1446400A Method and device for automatic gain control
10/01/2003CN1446399A 信号调制 Modulation
10/01/2003CN1123118C Muting microphone in silent radiocommunication systems
09/2003
09/30/2003US6628932 Radio receiver automatic gain control techniques
09/30/2003US6628788 Apparatus and method for noise-dependent adaptation of an acoustic useful signal
09/30/2003US6628731 Method and apparatus for controlling signal level in digital receiver
09/30/2003US6628165 Power controllers for amplitude modulation
09/25/2003WO2003079541A1 R.f. output power control
09/25/2003WO2002103375A3 Integrated power detector with temperature compensation
09/25/2003WO2002031996A3 Adjustment of bias current in a first integrated circuit based on a signal gain of a second integrated circuit
09/25/2003WO2002031973A3 Gain linearizer for variable gain amplifiers
09/25/2003US20030182109 Digital audio system and method therefor
09/25/2003US20030181188 Method and apparatus for DC offset cancellation
09/25/2003US20030181184 High speed operational amplifier design
09/25/2003US20030181181 Low noise amplifier (LNA) gain switch circuitry
09/25/2003US20030181180 LNA gain adjustment for intermodulation interference reduction
09/25/2003US20030181179 Analog power detection for gain control operations
09/25/2003US20030181178 RF AGC amplifier system for satellite/ terrestrial radio receiver
09/25/2003US20030181176 Programmable gain amplifier (PGA) with AGC in receiver section
09/25/2003US20030181175 Analog peak detection circuitry for radio receivers
09/25/2003US20030181173 Improving the Efficiency of Power Amplifiers in Devices Using Transmit Beamforming
09/25/2003US20030179887 Automatic adjustments of audio alert characteristics of an alert device using ambient noise levels
09/25/2003US20030179046 Automatic gain control circuit and control method
09/25/2003US20030179040 Single-detector automatic gain control circuit
09/24/2003EP1346474A1 Amplifier circuit
09/24/2003CN1444344A Combined open-loop and closed-loop power control measured by using difference
09/24/2003CN1122372C Method and equipment for driving receiver
09/24/2003CN1122359C Automatic gain control circuit, method and receiver
09/24/2003CN1122255C Karaoke amplifier with variable settable range of parameter to control audio signal
09/23/2003US6625475 Portable electronic device
09/23/2003US6625433 Constant compression automatic gain control circuit
09/23/2003US6625429 Mobile radio communication apparatus
09/23/2003US6625227 Artificial ramping of transmit power for burst transmissions
09/18/2003WO2003077417A1 Methods and apparatus for automatic gain control
09/18/2003WO2003077416A2 Adjustable gain control system and method thereof
09/18/2003WO2002091568A3 Method for regulating the amplification of a high-frequency signal
09/18/2003US20030176202 Combined open and closed loop power control with differential measurement
09/18/2003US20030174023 Analog summing and differencing circuit, optical receiving circuit, optical transmitting circuit, automatic gain control amplifier, automatic frequency compensation amplifier, and limiting amplifier
09/17/2003CN1442959A Power servo ring, radio frequency signal amplifying circuit and radio frequency signal emitter
09/17/2003CN1121766C Portable terminal equipment for controlling receiving/transmitting phonetic electric level
09/16/2003US6621368 Dynamic range extension for an electronic circuit
09/16/2003US6621348 Variable gain amplifier with autobiasing supply regulation
09/16/2003US6621345 Gain control device for packet signal receiver
09/16/2003US6621339 Methods and apparatus for facilitating negative feedback, providing loop stability, and improving amplifier efficiency
09/12/2003WO2003075485A1 Power control device and method for calibrating the power of a transmitter or receiver in a mobile communication network
09/12/2003WO2003075484A1 Power control device and method for controlling the transmission power of a transmitter in a mobile communication network
09/12/2003WO2003075469A2 System and method for antenna diversity using equal power joint maximal ratio combining
09/12/2003WO2003075452A2 Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity
09/12/2003WO2003075396A2 System and method for antenna diversity using joint maximal ratio combining
09/11/2003US20030171882 Methods and apparatus for automatic gain control
09/11/2003US20030171104 Receiver
09/11/2003US20030169120 Modulation circuit for wireless installation
09/11/2003US20030169119 Signal modulation
09/11/2003US20030169114 Adjustable gain control system and method thereof
09/11/2003US20030169112 Variable gain amplifier with low power consumption
09/10/2003EP1343254A2 Combined open and closed loop power control with differential measurement
09/10/2003EP1342313A2 Method and device for regulating the power of millimeter waves for a v-band tr module
09/10/2003EP1264395B1 Improved method and apparatus for improving the efficiency of power amplifiers, operating under a large peak-to-average ratio
09/10/2003CN1441546A 光接收电路 Light receiving circuit
09/10/2003CN1121096C Decoder having gain controller in mobile communication system and its gain controlling method
09/04/2003WO2003073660A2 3g radio
09/04/2003WO2003073627A1 High-frequency power amplifier circuit and electronic part for communication
09/04/2003WO2003073603A2 Current modulator with dynamic amplifier impedance compensation
09/04/2003WO2002082641A3 Linear amplitude modulation in a polar loop control circuit
09/04/2003WO2002071604A3 Receiver with agc controlled resonance amplifier
09/04/2003WO2002015387A3 Amplification systems and methods using fixed and modulated power supply voltages and buck-boost control
09/04/2003WO2002011281A3 Protection circuit for extending headroom with off-chip inductors
09/04/2003US20030164735 Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity
09/03/2003EP1340224A1 Method for control of a unit comprising an acoustic output device
09/03/2003CN1440589A RF power amplifier having high power added efficiency
09/03/2003CN1120578C Device and method for regulating transmitting/receiving signal gains
09/03/2003CN1120546C VHF/UHF self-tuning planar antenna system
09/02/2003US6614304 Variable gain circuit having external controls and a low supply voltage
09/02/2003US6614300 Dual current mirror power amplifier bias control
09/02/2003US6614298 Apparatus and method for controlling adaptive circuits
08/2003
08/28/2003WO2003071695A1 Point-to-multipoint burst modem automatic gain control
08/28/2003WO2003071694A1 Transmission output circuit and mobile communication terminal
08/28/2003WO2003071674A1 Circuit and method for switching gains of preamplifier
08/28/2003US20030162520 Improved multi-carrier receiver for a radio telecommunication network
08/28/2003US20030161640 Optical receiving circuit
08/28/2003US20030161489 Digital attenuator
08/28/2003US20030161488 Audio circuit having noise cancelling function
08/28/2003US20030161417 Gain control in wireless LAN devices
08/27/2003EP1338088A2 Signal level control
08/27/2003EP1131885B1 Circuit and method for linearizing amplitude modulation in a power amplifier
08/27/2003EP0829133B1 Agc circuit arrangement for a tuner
08/27/2003CN1119858C Radio communication apparatus and its transmitted power controlling method
08/27/2003CN1119856C Stable power amplifier and transceiver terminal with it
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