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)
04/1998
04/28/1998US5745847 Automatic gain control circuit capable of compensating variation of reception level with wide range
04/28/1998US5745845 Receiver with automatic receiving-station switching function
04/28/1998US5745844 Receiver control in a communication device by antenna de-tuning in strong signal conditions, and method therefor
04/28/1998US5745521 Spread spectrum communication apparatus and signal intensity detection apparatus
04/28/1998US5745469 Signal-processing preamplifier for an optical disc system
04/28/1998US5745057 Adjustment operating apparatus
04/28/1998US5745016 Method for improving power measurement implemented with a directional coupler at low power levels
04/28/1998US5744993 Read channel for at least partially offsetting nonlinear signal effects associated with the use of magneto-resistive heads
04/28/1998CA2106761C Reduced noise interference during handoff
04/23/1998WO1998017008A1 Data transmission equipment
04/23/1998WO1998016999A1 Automatic volume control to compensate for ambient noise variations
04/23/1998WO1998016912A1 Pager with adaptable alarm
04/23/1998DE19642149A1 System zur Datenübertragung System for data transmission
04/22/1998EP0836766A2 Degenerated differential pair with controllable transconductance
04/22/1998CN1179688A Power control circuit of radio communication system and method thereof
04/22/1998CN1179648A Optical measuring device, and spectroscopic light equipment and photodetector suitable therefore
04/22/1998CN1179647A Power amplifier circuit
04/21/1998US5742899 Fast attack automatic gain control (AGC) loop for narrow band receivers
04/21/1998US5742203 Gain-controllable amplifier, receiver
04/21/1998US5742202 Method and apparatus for dynamic automatic gain control when pilot signal is lost
04/16/1998WO1998016041A1 Data comparison agc system for vsb receiver
04/16/1998DE19710769A1 Variable gain semiconductor amplifier circuit
04/15/1998EP0835552A1 Adaptive gain controller
04/15/1998EP0716783B1 Amplifier stage with a db-linear output voltage
04/15/1998EP0676100A4 Method and apparatus for controlling a peak envelope power of a power amplifier.
04/15/1998EP0651906B1 Semiconductor-emulation of vacuum tubes
04/15/1998EP0469101B1 Power amplifier
04/15/1998CN1179242A Filter with feed-forward AGC
04/15/1998CN1179241A Dual action automatic sound level control
04/15/1998CN1179042A Automatic gain controller and method in direct series broad spectrum communication system
04/15/1998CN1179038A Power control circuit of radio frequency transmitter
04/15/1998CN1179033A Gain control circuit and method
04/14/1998US5740524 Feed-forward RSSI assisted radio frequency amplifier power control
04/09/1998WO1998015055A1 Multiple preamplifier circuit for a television tuner
04/08/1998EP0834988A2 Method of automatic limiting of distortion in audio devices and circuit for carrying out the method
04/08/1998EP0834987A2 A diode detector
04/08/1998EP0834986A2 Gain control circuit and method
04/08/1998EP0834217A1 Process for controlling the power of the transmission amplifier of radio equipment
04/08/1998EP0706730B1 Method and apparatus for automatic gain control and dc offset cancellation in quadrature receiver
04/07/1998US5737697 Transmission power control circuit for a communication system
04/07/1998US5737033 AGC apparatus concurrently satisfying sufficient impedance matching characteristic and linear AGC characteristic
04/02/1998WO1998013943A1 Method and apparatus for detecting and cancelling unwanted transmitter modulation
04/02/1998DE19734969A1 Device for reproducing audio signals
04/02/1998DE19638129A1 Output controlling method esp. for time-division multiplex transmitter
04/01/1998EP0833444A2 Method and device for reproducing audio
03/1998
03/31/1998US5734987 Noise-controlled communication apparatus
03/31/1998US5734974 For receiving an input signal and generating an output signal
03/31/1998US5734971 Adaptive system for determining radio frequency at vehicle start-up
03/31/1998US5734729 Apparatus for eliminating audio noise when power is cycled to a computer
03/26/1998WO1998012821A1 Interference detection circuit having amplitude frequency domain defined discrimination
03/25/1998EP0831584A1 Amplifier system
03/25/1998EP0831480A1 Data processing apparatus and methods
03/25/1998EP0831479A1 Data processing apparatus and methods
03/25/1998EP0831478A1 Data processing apparatus and methods
03/25/1998EP0667994B1 Method and arrangement for controlling the operation of a high-frequency power amplifier
03/24/1998US5732341 Method and apparatus for increasing receiver immunity to interference
03/24/1998US5732340 For instantaneous muting during reception of a broadcast
03/24/1998US5732334 Radio transmitter and method of controlling transmission by radio transmitter
03/18/1998EP0829956A2 Electronic device having an AGC loop
03/18/1998EP0829954A1 Amplifier system
03/18/1998EP0829134A1 Selective call receivers with stepwise variable gain control with hysteresis
03/18/1998EP0829133A1 Agc circuit arrangement for a tuner
03/18/1998CN1176712A Out-of-band compensation for non-linear device
03/18/1998CN1176552A Method and apparatus for automatic gain control in quadrature phase shift keying demodulator
03/18/1998CN1176540A Wireless telecommunication equipment
03/18/1998CN1176529A AGC voltage correction circuit
03/13/1998CA2212950A1 Power control circuit for a radio frequency transmitter
03/12/1998WO1998010514A1 Gain controlling method and receiver
03/12/1998CA2232754A1 Gain control method and receiver
03/11/1998EP0827642A1 A cartesian loop transmitter
03/11/1998CN1175875A Mobile telephone with automatic level control means of sound signal
03/11/1998CN1175872A Transmission device with low power consumption and with small circuit scale
03/11/1998CN1037734C RF amplifier bias control method and apparatus
03/10/1998US5727031 Adaptive gain controller
03/10/1998US5726604 Differential transconductor stage dynamically controlled by the input signal's amplitude
03/05/1998WO1998009374A1 Muting a microphone in radiocommunication systems
03/04/1998EP0827281A2 Circuit arrangement with at least two signal paths
03/04/1998CN1175329A Method and apparatus for increasing receiver immunity to interference
03/04/1998CN1175136A Comprehensive diversity circuit for radio communication
03/03/1998US5724652 Method for acquiring a rapid automatic gain control (AGC) response in a narrow band receiver
03/03/1998US5724519 For displaying an input video signal
03/03/1998US5724312 Ultrasound transducer head with integrated variable-gain amplifier devices
03/03/1998US5724005 Linear power amplifier with automatic gate/base bias control for optimum efficiency
03/03/1998US5724003 Methods and apparatus for signal amplitude control systems
02/1998
02/26/1998WO1998008324A2 Microprocessor-controlled full-duplex speakerphone using automatic gain control
02/25/1998EP0825711A2 Method for automatically matching a receiver to differennt signal levels and receiver perfoming this method
02/25/1998EP0825709A1 Grounded-emitter amplifier circuit with an attenuator
02/25/1998EP0824794A2 Improvements in or relating to radio receivers
02/25/1998EP0824793A1 Spurious signal reduction in rf transmitter integrated circuits
02/25/1998EP0824785A1 Secondary surveillance radar
02/25/1998EP0824784A1 Temperature compensated automatic gain control
02/24/1998US5722063 Method and apparatus for increasing receiver immunity to interference
02/24/1998US5722062 Linear receiver having dual automatic gain control loops
02/24/1998US5722061 Method and apparatus for increasing receiver immunity to interference
02/24/1998US5722060 Radio receiver
02/24/1998US5722056 Radio transmitter with power amplifier linearizer
02/24/1998US5721757 In a wireless telecommunications system
02/24/1998US5721552 Transponder with AGC regulator
02/24/1998US5721513 Gain controlled amplification circuit having differential amplifier
02/24/1998CA2149050C Method and apparatus for controlling a peak envelope power of a power amplifier
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