Patents
Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162)
06/2001
06/20/2001CN1300487A Base station device and method for suppressing peak current
06/20/2001CN1300470A Apparatus and method for power control
06/19/2001US6249158 Circuit arrangement for generating an output signal
06/14/2001WO2001043281A1 Arrangement for controlling the output power of an hf transmitter
06/14/2001WO2000079713A3 Digital broadcast transmission system comprising a power control system using a pilot signal
06/14/2001US20010003536 Reception power level calculating circuit and receiver using the same
06/14/2001US20010003434 Power amplifier system having amplifier failure compensation
06/14/2001US20010003433 Power amplifier system having frequency and amplifier failure compensation
06/13/2001DE19959403A1 Anordnung zum Regeln der Ausgangsleistung eines HF-Senders An arrangement for controlling the output power of an RF transmitter
06/13/2001DE19951942A1 Power amplifier with overdriving protection damps higher input signal amplitudes more than lower signal amplitudes if supply voltage reduces below defined threshold value
06/13/2001CN1299537A Transmission control device and transmission power control method
06/13/2001CN1299531A Amplifier with adjustable bias current
06/12/2001US6246285 AGC circuit based on a peak detection system
06/12/2001US6246284 Negative feedback amplifier with automatic gain control function
06/12/2001US6246282 First stage amplifier circuit
06/07/2001WO2001041302A1 Amplifier
06/07/2001WO2001010019A3 Device for amplifying a signal emitted by a ray detector
06/06/2001CN2433776Y Low-frequency compensation gain control circuit
06/05/2001US6243422 Waveform shaping method and equipment
06/05/2001US6242982 Amplifier with self setting automatic gain control circuit
06/05/2001US6242981 AGC circuit
06/05/2001US6242976 Low cost linearized channel amplifier for use with high power amplifiers
06/05/2001US6242732 Optical receiver with a control loop providing wide dynamic range
05/2001
05/31/2001WO2001039384A1 Signal level adjustment arrangement
05/31/2001WO2001039370A2 Signal processing system and method
05/30/2001EP1104119A2 Transmitter adjusting output power
05/30/2001EP1104109A1 Regulator for sine wave generator and sine wave generator unit including such a regulator
05/30/2001EP1104095A1 Amplifying Divice Providing Adjustable Bandwidth
05/30/2001EP1103099A1 Systems and methods for management of current consumption and performance in a receiver down converter of a wireless device
05/30/2001EP0659288B1 Low cost controller
05/30/2001CN1297609A 发送机及接收机 Transmitter and receiver
05/30/2001CN1297283A Current-type step gain controller circuit for digital technology
05/30/2001CN1066599C Muting circuit
05/29/2001US6240279 Transmission power control apparatus and a radio communication apparatus including the transmission power control apparatus
05/29/2001US6240191 Audio volume control circuit using pulse width modulation signal
05/29/2001US6240144 Apparatus and method of linearizing a power amplifier in a mobile radio communication system
05/29/2001US6240100 Cellular TDMA base station receiver with dynamic DC offset correction
05/29/2001US6239659 Low power gain controlled amplifier with high dynamic range
05/29/2001US6239658 Power consumption control for low noise amplifier
05/29/2001US6239655 Microphone amplifier with digital gain control
05/25/2001WO2001037436A2 Complex filtering/agc radio receiver architecture for low-if or zero-if
05/23/2001EP1102395A2 Noise reduction and range control radio system
05/23/2001EP1101281A1 Automatic gain control circuit for controlling multiple variable gain amplifier stages while estimating received signal power
05/23/2001CN1296711A Radio receiver and received power amplifying method
05/23/2001CN1296663A Hybrid chireix/doherty amplifiers power waveform synthesis
05/23/2001CN1066307C Output power controlling circuit and antenna shared device of mobile telecommunication apparatus
05/22/2001US6236863 Comprehensive transmitter power control system for radio telephones
05/22/2001US6236841 Transmission output power control circuit for controlling each of antennas to optimal states
05/22/2001US6236286 Integrated on-board automated alignment for a low distortion amplifier
05/22/2001US6236271 Multi-layer carrier module for power amplifier systems within a digital cellular telephone
05/17/2001WO2001035527A2 Gigabit ethernet transceiver with analog front end
05/17/2001DE19947048A1 Regelkreis für digitale Signale Loop for digital signals
05/16/2001EP1099303A1 Method and apparatus for controlling an audio signal level
05/15/2001US6232839 Voltage-controlled amplifier having compensation for gain control imbalance
05/15/2001US6232816 Signal level monitoring circuit
05/15/2001CA2257617C Wideband catv amplifier with microprocessor-based slope and gain control
05/10/2001WO2001033736A1 Method and apparatus for improving loop stability and speed of a power control loop
05/10/2001WO2001018979A3 Method for reducing reception interferences, especially multiway reception interferences, for receiving a radio signal and circuit for carrying out this method
05/09/2001EP1097521A1 Network amplifier monitoring circuit
05/09/2001CN1065675C Electromagnetic-noise protection circuit
05/08/2001US6230123 Noise reduction method and apparatus
05/08/2001US6229858 Phaselock threshold correction
05/08/2001US6229397 Automatic gain control circuit receiving apparatus incorporating said circuit automatic gain control method adaptable to receiving apparatus and recording medium
05/08/2001US6229393 High frequency power generator
05/03/2001WO2001031802A1 Apparatus and method for controlling transmission power of mobile station
05/02/2001EP1096697A2 Radio communication system and method for controlling a gain of a receiver portion of the system
05/02/2001EP1096673A1 A method and device for preventing saturation in a power amplifier control loop
05/02/2001EP1096672A2 Variable gain type amplifier
05/02/2001EP1095449A1 Amplifier with dynamically adaptable supply current
05/02/2001CN1293498A Code devision multiple access receiver autogain control circuit and code division multiple access demodulator
05/02/2001CN1293493A Autogain control circuit and receiver having said circuit
05/01/2001US6226504 Receiving apparatus
05/01/2001US6225855 Reference voltage generation circuit using source followers
04/2001
04/26/2001DE10037937A1 D/A-Wandlervorrichtung und D/A-Wandlerverfahren D / A converting device and D / A conversion process
04/25/2001EP1094600A1 Apparatus for amplifying signals
04/25/2001EP1093686A1 Improved exponential current generator and method
04/24/2001US6222472 Automatic gain controller for radio communication system
04/19/2001WO2001028125A1 Control of transmission power in a communication system
04/19/2001DE10034864A1 Amplifier and by-pass switch arrangement for communication systems, has first and second circuit inputs, and circuit output, in which circuit includes amplifying transistors, resistors and capacitors
04/18/2001EP1093240A2 CDMA receiver and CDMA demodulator with AGC circuit
04/18/2001EP1093233A1 Apparatus and method for power control
04/18/2001EP1093222A1 Transmitter and receiver
04/18/2001EP1092288A1 Data transmission in a tdma system
04/18/2001CN1064796C Level control circuit for receiver
04/17/2001US6218905 Common-gate transimpedance amplifier with dynamically controlled input impedance
04/12/2001WO2001026240A1 Apparatus and method for compensating rf gain based on measured rf noise
04/12/2001WO2001026222A1 Dynamic closed-loop audio amplifier system
04/12/2001WO2001026219A1 Artificial ramping of transmit power for burst transmissions
04/12/2001WO2000048307A8 High-efficiency modulating rf amplifier
04/12/2001DE10044416A1 Switching mode power converter has controller for motor speed control coupled to pair of switches, which activates each of the switches during respective switching cycles
04/12/2001DE10035060A1 Leistungsverstärkungsschaltung mit Lasteinstellung zur Steuerung der Leistung des benachbarten Kanals und des übernächsten Kanals Power amplifier circuit with load setting to control the power of the adjacent channel and of the next channel
04/11/2001EP1091516A1 Base station device and method of suppressing peak current
04/11/2001EP1091493A2 Method and circuit for determining signal amplitude
04/11/2001CN1291381A Decoder having a gain controller in a mobile communication system
04/10/2001US6216012 Dualband power amplifier control using a single power amplifier controller
04/10/2001US6215989 Variable gain circuit
04/10/2001US6215987 Mobile communication transmitter capable of selectively activating amplifiers
04/05/2001WO2001024360A1 Control loop for digital signals
04/04/2001EP1089430A2 A dB-linear variable gain amplifier
04/04/2001EP1089429A2 Automatic gain control circuit and receiver having the same