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)
11/2003
11/12/2003CN1127807C Improvements in or relating to radio receivers
11/12/2003CN1127806C Burst transmission output power controller capable of lowering phase error
11/11/2003US6646511 Power amplifier with provisions for varying operating voltage based upon power amplifier output power
11/11/2003US6646510 Method of adjusting gain and current consumption of a power amplifier circuit while maintaining linearity
11/11/2003CA2319325C Vhf/uhf self-tuning planar antenna system
11/06/2003WO2003092249A2 Controlling output power in cellular telephones
11/06/2003WO2003091870A1 Apparatus and method for adapting audio signal
11/06/2003WO2003005601A3 Device and method for maintaining the transmitting power of a radio at a constant level
11/06/2003WO2003005600A3 Optimisation of the operating point of transmitter power amplifiers in mobile stations
11/06/2003US20030207676 Method and apparatus in a wireless communication device for mitigating a received power overload
11/06/2003US20030207675 Automatic gain control system having a wide range of continuous gain control
11/06/2003US20030207674 Method and apparatus for reducing intermodulation distortion in a low current drain automatic gain control system
11/06/2003US20030206744 Bottom level detection device for burst mode optical receiver
11/06/2003US20030206576 Apparatus for improving intermodulation distortion characteristics in a CDMA mobile terminal
11/06/2003US20030206064 Output power control system
11/06/2003US20030206063 Method and system for producing a drive signal for a current steering amplifier
11/06/2003US20030206062 Variable gain amplifier
11/06/2003US20030206057 Power amplifier driver and method of using
11/06/2003US20030206055 Signal processing stage and radio frequency tuner
11/05/2003EP1359673A1 Radio frequency tuner front end with adaptive supply current
11/05/2003EP1359666A2 Signal processing stage and radio frequency tuner
11/05/2003CN1454001A Shock sound prevention circuit
11/05/2003CN1454000A Shock Sound prevention circuit
11/04/2003US6643498 Wireless receiver, wireless receiving method, and recording medium
11/04/2003US6642784 Calibrated power amplifier module
10/2003
10/30/2003WO2003036896A3 Multi-mode communications transmitter
10/30/2003US20030203727 Digital automatic gain controlling in direct-conversion receivers
10/30/2003US20030203726 Digital automatic gain control for transceiver devices
10/30/2003US20030203725 Circuit stage for radio frequency tuner and radio frequency tuner
10/30/2003US20030202496 Automatic gain control in a WLAN receiver having improved settling speed
10/30/2003US20030202495 Power normalization in WLAN receivers
10/30/2003US20030201827 High frequency power amplifier module
10/30/2003US20030201382 Automatic gain control device for a burst-mode optical receiver
10/29/2003EP1357665A2 Automatic gain control device for a burst-mode optical receiver
10/29/2003EP1357664A2 Variable gain amplifer
10/29/2003EP1356591A1 Feedback loop with slew rate limiter
10/29/2003CN1452808A Receiver circuit for mobile radio receivers with automatic amplification control
10/29/2003CN1452324A HF signal receiving device
10/29/2003CN1126244C Gain changeable amplifier circuit
10/28/2003US6639470 Constant current biasing circuit for linear power amplifiers
10/28/2003US6639469 Variable-gain amplifier circuit
10/28/2003US6639466 Amplifier bias adjustment circuit to maintain high-output third-order intermodulation distortion performance
10/23/2003WO2003088684A2 Device and method for cdma-signal power estimation
10/23/2003WO2002069485A3 Gain compensation circuit using a variable offset voltage
10/23/2003US20030199258 Received-signal gain control apparatus and radio communication apparatus
10/23/2003US20030199256 Memory-based amplifier load adjust system
10/23/2003US20030199153 Method of producing SI-GE base semiconductor devices
10/23/2003US20030197563 Amplification circuit and optical communication apparatus provided with the amplification circuit
10/23/2003US20030197560 Dual gain amplification low noise amplifier
10/22/2003EP1355464A2 DC removal in an optical receiver
10/22/2003EP1355437A1 Bottom level detection device for burst mode optical receiver
10/22/2003EP1355436A1 Burst mode optical receiver generating a reset signal for an automatic threshold control device during inter-burst periods
10/22/2003EP1355419A2 High-frequency signal receiver
10/22/2003EP1355418A1 Audio superpositioning
10/22/2003EP1354401A1 Circuits and methods for controlling transients during audio device power-up and power-down, and systems using the same
10/22/2003EP1354400A2 Method for optimizing the level of rf signals by comparing quality of the rf signals under different operation modes
10/22/2003EP1210766B1 Automatic gain control loop for frequency conversion of quadrature signals
10/22/2003CN1451218A Device and method for adjusting input gain for multiple signal formats in a data network
10/22/2003CN1125552C Frequency-shift key-control signal receiver
10/22/2003CN1125534C Anti-pop of power off electronic apparatus
10/21/2003US6636609 Method and apparatus for automatically compensating sound volume
10/21/2003US6636114 High frequency power amplifier module and wireless communication apparatus
10/21/2003US6636112 High-efficiency modulating RF amplifier
10/16/2003WO2003085849A1 Communication apparatus
10/16/2003WO2003085547A1 Computer audio system
10/16/2003WO2003073660A3 3g radio
10/16/2003WO2003063338A3 Direct conversion of low power high linearity receiver
10/16/2003WO2002069489A3 An automatic gain control circuit with high linearity and monotonically correlated offset voltage
10/16/2003US20030194981 Device and method for CDMA-signal power estimation
10/16/2003US20030194244 Burst-mode optical receiver of differential output structure
10/16/2003US20030194243 Burst mode optical receiver
10/16/2003US20030194101 Audio superpositioning
10/16/2003US20030194029 Automatic gain control methods and apparatus suitable for use in OFDM receivers
10/16/2003US20030194028 Constant-phase, gain-controlled amplification circuit
10/16/2003US20030193370 System and method of amplifier gain control by variable bias and degeneration
10/15/2003EP1352469A2 Apparatus and method for optimizing the level of rf signals
10/15/2003EP1352466A2 A fully differential, variable-gain amplifier and a multidimensional amplifier arrangement
10/15/2003EP1210768B1 Adaptive rf amplifier prelimiter
10/15/2003CN1124681C Predistorter of amplifier and amplifier unit
10/15/2003CN1124680C High dynamic range variable gain amplifier
10/14/2003US6633751 System for a dual feedback translation loop for power amplifier feedback control
10/14/2003US6633750 Methods and apparatus for adjusting DC power consumption in mobile handset
10/09/2003WO2003084060A1 Gain control for communications device
10/09/2003WO2002093759A3 Device and method for regulating the output power of mobile radio telephone stations
10/09/2003WO2002067418A3 Device for the noise-dependent adjustment of sound volumes
10/09/2003WO2002033821A3 Mobile telephone comprising an improved transmitter
10/09/2003US20030190899 Receiving section of a telephone
10/09/2003US20030189450 Power on reset circuit
10/08/2003EP1351403A2 Transceiver with front end reconfiguration
10/08/2003EP1351400A2 Quad switched gain circuit
10/08/2003EP1351399A1 Combined multiplexer and switched gain circuit
10/08/2003EP1351383A2 Analog multiplexer and variable gain amplifier for intermediate frequency applications
10/08/2003EP1350317A2 Apparatus and method for optimizing the level of rf signals based upon the information stored on a memory
10/08/2003EP1230738B1 Complex filtering/agc radio receiver architecture for low-if or zero-if
10/08/2003EP1147621B1 Communication station with automatic cable loss compensation
10/08/2003EP0979553B1 Signal processing device
10/07/2003US6631171 QPSK modulation signal receiving unit
10/07/2003US6630903 Programmable power regulator for medium to high power RF amplifiers with variable frequency applications
10/07/2003US6630867 Power amplifier with provisions for varying operating voltage based upon power amplifier output power
10/07/2003US6630861 Variable gain amplifier
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