| Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162) |
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| 09/07/2005 | CN1664921A Sound reproducing method and apparatus |
| 09/07/2005 | CN1218476C Method and circuit for distortion compensation and output control |
| 09/06/2005 | US6941118 Negative feedback amplifier and method of controlling loop gain thereof |
| 09/06/2005 | US6941112 Gain control amplification circuit and terminal equipment having the same |
| 09/06/2005 | US6940986 Apparatus and method for remotely and automatically controlling the volume of audio signals produced by a remotely controlled audio device |
| 09/06/2005 | US6940985 Shock sound prevention circuit |
| 09/06/2005 | US6940345 Supplying a ramp voltage to an amplifier |
| 09/01/2005 | WO2005081413A1 Radio transmitter with reduced power consumption |
| 09/01/2005 | WO2005081400A1 Audio amplification device with antipop circuitry |
| 09/01/2005 | WO2005067156A3 Microwave frequency converter |
| 09/01/2005 | US20050191981 Method and device for amplifying a reception signal |
| 09/01/2005 | US20050190932 Streophonic apparatus having multiple switching function and an apparatus for controlling sound signal |
| 09/01/2005 | US20050190927 Speaker systems and methods having amplitude and frequency response compensation |
| 09/01/2005 | US20050190866 Digital automatic gain control |
| 09/01/2005 | US20050190846 Frequency transposition method and device, in particular for the control of the transmission power of a cellular mobile telephone |
| 09/01/2005 | US20050190087 AGC circuit, AGC circuit gain control method, and program for the AGC circuit gain control method |
| 09/01/2005 | US20050189993 Gigabit ethernet transceiver with analog front end |
| 09/01/2005 | DE102004006552A1 Verfahren zur Kontrolle eines Hochfrequenz-Leistungsverstärkers, Hochfrequenzeinrichtung, Hochfrequenzkontrolleinrichtung und Magnetresonanztomographiesystem A method for controlling a high-frequency power amplifier, high frequency device, high frequency control device and magnetic resonance imaging system |
| 09/01/2005 | DE102004006550A1 Control process for a high frequency power amplifier for a magnetic resonance tomography system samples pulses from sender coil to obtain measuring error and limiting value |
| 08/31/2005 | EP1569360A1 Spread-spectrum system and method |
| 08/31/2005 | EP1569359A1 Method and apparatus for optimizing transmitter power efficiency |
| 08/31/2005 | EP1569350A1 Power limit device and digital radio transmitter using the same |
| 08/31/2005 | EP1569330A1 Method and apparatus for improving power amplifier efficience in wireless communication systems having high peak to average power ratios |
| 08/31/2005 | EP1568236A2 Continuously variable gain radio frequency driver amplifier having linear in decibel gain control characteristics |
| 08/31/2005 | EP1568192A1 Compensating for analog radio component impairments to relax specifications |
| 08/31/2005 | EP1568151A2 Method and apparatus for optimizing transmitter power efficiency |
| 08/31/2005 | EP1568127A2 Amplifier assembly, receiver comprising said assembly and method for operating a programmable amplifier |
| 08/31/2005 | EP1303910B1 Agc circuit |
| 08/31/2005 | EP0847620B1 Circuit arrangement comprising a feedback loop |
| 08/31/2005 | CN1662100A Bass boost circuit and bass boost processing program |
| 08/31/2005 | CN1661927A Method and apparatus for optimizing transmitter power efficiency |
| 08/31/2005 | CN1661910A Gain control circuit and relevant amplifier |
| 08/31/2005 | CN1661909A AGC circuit and gain control method, and program |
| 08/31/2005 | CN1661908A System and method for adjusting power amplifier output power |
| 08/31/2005 | CN1661907A Single trunbutton controlled system of sound volume and method |
| 08/31/2005 | CN1217536C Shock sound prevention circuit |
| 08/30/2005 | US6937847 Integrated RF signal level detector usable for automatic power level control |
| 08/30/2005 | US6937675 Apparatus for improving intermodulation distortion characteristics in a CDMA mobile terminal |
| 08/30/2005 | US6937094 Systems and methods of dynamic bias switching for radio frequency power amplifiers |
| 08/25/2005 | WO2005078969A1 Automatic bit rate control circuit |
| 08/25/2005 | WO2005078939A1 Transmission power control device |
| 08/25/2005 | WO2005078919A1 Methods and systems for signal amplification through envelope removal and restoration |
| 08/25/2005 | WO2005078916A1 Programmable radio transceiver |
| 08/25/2005 | WO2005033880A3 Method and apparatus for performing multimedia operations |
| 08/25/2005 | US20050186928 Automatic gain control circuit and receiver device having the automatic gain control circuit, and automatic gain control method |
| 08/25/2005 | US20050186922 Mobile-communication equipment and transmission power control method |
| 08/25/2005 | US20050185802 Bass boost circuit and bass boost processing program |
| 08/25/2005 | US20050185433 Device for amplitude adjustment and rectification made with MOS technology |
| 08/24/2005 | EP1566887A2 Mobile-communication equipment and transmission power control method |
| 08/24/2005 | EP1512230A4 Digital video broadcast-terrestrial (dvb-t) receiver interoperable with a gsm transmitter in a non-interfering manner |
| 08/24/2005 | EP1415410B1 Power control for non-constant envelope modulation |
| 08/24/2005 | EP1256176B1 Method for masking interruptions during playback of received radio signals |
| 08/24/2005 | EP1103099B1 Systems and methods for management of current consumption and performance in a receiver down converter of a wireless device |
| 08/24/2005 | CN1659507A Apparatus and method for adapting audio signal |
| 08/24/2005 | CN1658516A Mobile-communication equipment and transmission power control method |
| 08/24/2005 | CN1658498A Transmission power controller of a mobile communication terminal |
| 08/24/2005 | CN1658497A Method and apparatus for improving power amplifier efficiency in wireless communication systems |
| 08/24/2005 | CN1216459C Oscillating device |
| 08/24/2005 | CN1216364C Equipment with acoustic output device and control method thereof |
| 08/23/2005 | US6934522 Automatic gain control apparatus |
| 08/23/2005 | US6934520 CMOS current mode RF detector and method |
| 08/23/2005 | US6934398 Method for switching audio signals and the device of the same |
| 08/23/2005 | US6934344 Digital automatic gain control |
| 08/18/2005 | WO2005076484A1 Radio receiver, radio reception integrated circuit, radio clock, and repeater |
| 08/18/2005 | WO2005076468A1 Amplifier and acoustic system |
| 08/18/2005 | WO2005076467A1 Power amplifier unit, communication terminal and control method of power amplifier unit |
| 08/18/2005 | WO2005034734A3 Hearing adjustment appliance for electronic audio equipment |
| 08/18/2005 | US20050181753 Logic low noise amplifier and amplification control method thereof |
| 08/18/2005 | US20050181751 Power amplifier arrangement having an antenna, and a method for amplification and emission of a signal |
| 08/18/2005 | US20050181746 Methods and systems for signal amplification through envelope removal and restoration |
| 08/18/2005 | US20050181740 Transmission power controller of a mobile communication terminal |
| 08/18/2005 | US20050180583 Advanced mute function |
| 08/18/2005 | US20050180578 Apparatus and method for adapting audio signal |
| 08/18/2005 | US20050179820 System and method for TV automatic gain control (AGC) |
| 08/18/2005 | US20050179498 High frequency power amplifier circuit and radio communication system |
| 08/18/2005 | US20050179493 Temperature controlled, log-linear gain control circuit for amplifiers |
| 08/17/2005 | EP1564910A2 Timing adjustment for wireless communication |
| 08/17/2005 | EP1564898A1 Radio transmitter with reduced power consumption |
| 08/17/2005 | EP1564883A1 Method and apparatus for frequency conversion, in particular for controlling the emitting power of a cellular mobile telephone |
| 08/17/2005 | EP1563600A1 Systems and methods of dynamic bias switching for radio frequency power amplifiers |
| 08/17/2005 | EP1518335A4 Method for tuning an envelope tracking amplification system |
| 08/17/2005 | CN2718896Y Sound volume controller |
| 08/17/2005 | CN1656672A Power amplifiers |
| 08/17/2005 | CN1655597A Sound volume adjusting apparatus and method |
| 08/17/2005 | CN1655447A Apparatus and method for automatically regulating microphone input level of portable terminal |
| 08/17/2005 | CN1655446A High frequency power amplifier circuit and radio communication system |
| 08/16/2005 | US6931242 Down converter using C/N ratio correcting circuit of base station for mobile communication network |
| 08/16/2005 | US6931124 Soft mute circuit |
| 08/16/2005 | US6930554 Variable gain low noise amplifier and method |
| 08/16/2005 | US6930553 Automatic gain control device and automatic gain control method |
| 08/16/2005 | US6930549 Variable gain amplifier for use in communications |
| 08/16/2005 | US6930532 Exponential conversion circuit and variable gain circuit |
| 08/11/2005 | WO2005074128A1 Variable gain circuit |
| 08/11/2005 | WO2005074125A1 Amplifier predistortion and autocalibration method and apparatus |
| 08/11/2005 | WO2005074123A1 Electronic circuit |
| 08/11/2005 | WO2005064790A3 Component and composite signal level controller |
| 08/11/2005 | US20050176388 Transmitter and wireless communication apparatus using the transmitter |
| 08/11/2005 | US20050175196 Method for switching audio signals and the device of the same |
| 08/11/2005 | US20050174177 High-frequency integrated circuit device having high efficiency at the time of low power output |
| 08/11/2005 | US20050174175 Amplifying circuit with adjustable amplification and transmitter system comprising such an amplifying circuit |