| Patents for H03G 3 - Gain control in amplifiers or frequency changers (20,162) |
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| 02/12/2009 | WO2008139032A8 Transmitter emission control |
| 02/12/2009 | WO2008130693A3 Apparatus and method for computing maximum power reduction for a umts signal |
| 02/12/2009 | US20090041267 Headset capable of being used as external speaker and method for adjusting output an thereof |
| 02/12/2009 | US20090041111 spectral translation/folding in the subband domain |
| 02/12/2009 | US20090040059 Apparatus to Monitor Process-Based Parameters of an Integrated Circuit (IC) Substrate |
| 02/12/2009 | US20090039961 Low quiescent current output stage and method with improved output drive |
| 02/12/2009 | US20090039960 Low power consuming mixed mode power amplifier |
| 02/12/2009 | US20090039957 Power amplifier and method for reducing common noise of power amplifier |
| 02/12/2009 | US20090039955 Variable resistor, filter, variable gain amplifier and integrated circuit using the variable resistor |
| 02/12/2009 | DE10028460B4 Integrierter Signalverarbeitungsschaltkreis Integrated signal processing circuit |
| 02/11/2009 | EP2023484A1 Automatic gain control device |
| 02/11/2009 | EP2022170A2 Modulation dependent automatic gain control |
| 02/11/2009 | EP2022138A2 System and method for saturation detection, correction and recovery in a polar transmitter |
| 02/11/2009 | EP1867121B1 Demodulation and amplification regulation concept, in particular for IR receivers |
| 02/11/2009 | CN101366177A Audio dosage control |
| 02/11/2009 | CN101364796A DC drift eliminator applied to variable gain amplifier |
| 02/11/2009 | CN100461624C Method for optimizing radio-frequency power amplifier and radio-frequency power amplifier system |
| 02/10/2009 | US7489909 Method and apparatus for controlling a TX power amplifier |
| 02/10/2009 | US7489908 Method and apparatus for controlling a TX power amplifier |
| 02/10/2009 | US7489790 Digital automatic gain control |
| 02/10/2009 | US7489663 CDMA wireless transmission apparatus, CDMA wireless transmitter-receiver system and transmission power control method of the CDMA wireless transmission apparatus |
| 02/10/2009 | US7489198 Linear regulating switch |
| 02/10/2009 | US7489196 Output power control of an RF amplifier |
| 02/05/2009 | US20090033535 Variable gain amplifier and D/A converter |
| 02/05/2009 | US20090033413 Gain controlled amplifier and cascoded gain controlled amplifier based on the same |
| 02/05/2009 | DE202007018517U1 Vorrichtung zur Anpassung der Tonlautstärke von elektronischen Geräten an die Umgebungslautstärke Device for adjusting the sound volume of electronic devices to the ambient noise |
| 02/04/2009 | EP2020747A2 Receiver system and method that detects and attenuates noise in a predetermined frequency range |
| 02/04/2009 | EP2020090A1 Antenna matching measurement and amplification control |
| 02/04/2009 | CN101361264A System and method for providing a transmitter for polar modulation and power amplifier linearization |
| 02/04/2009 | CN101359901A Variable gain amplifier |
| 02/04/2009 | CN101359900A Volume regulating method, apparatus and mobile terminal thereof |
| 02/04/2009 | CN100459452C Method and apparatus for increasing receiver immunity to interference |
| 02/04/2009 | CN100459427C Variable gain amplifier |
| 02/04/2009 | CN100459423C 音频放大器 Audio Amplifiers |
| 02/04/2009 | CN100459420C High frequency variable gain amplification device, control device, frequency-conversion device, and communication device |
| 02/03/2009 | US7486938 Method and apparatus for controlling a TX power amplifier |
| 02/03/2009 | US7486797 Audio correcting apparatus |
| 02/03/2009 | US7486142 Radio frequency power amplifying module with hetero junction bipolar transistor |
| 02/03/2009 | US7486138 Bipolar audio signal switch |
| 02/03/2009 | US7486137 System and method for power amplifier output power control |
| 02/03/2009 | US7486136 Power amplifier |
| 02/03/2009 | US7486132 Variable capacitor circuit and integrated circuit containing the same |
| 01/29/2009 | WO2009015128A1 Amplifier with a quadrature amplitude modulation (qam) modulated and a continuous wave automatic gain control (agc) circuit |
| 01/29/2009 | WO2009012537A1 Equalizer filter with mismatch tolerant detection mechanism for lower and higher frequency gain loops |
| 01/29/2009 | WO2008146189A3 Audio signal amplification |
| 01/29/2009 | US20090029661 Amplifier with a Quadrature Amplitude Modulation (QAM) Modulated and a Continuous Wave Automatic Gain Control (AGC) Circuit |
| 01/29/2009 | US20090028353 Active sound effect generating apparatus |
| 01/29/2009 | US20090028352 Signal process for the derivation of improved dtm dynamic tinnitus mitigation sound |
| 01/29/2009 | US20090028271 Wireless transmitting and receiving device and method |
| 01/29/2009 | US20090027563 Low noise amplifier |
| 01/29/2009 | US20090027524 Variable gain stage having same input capacitance regardless of the stage gain |
| 01/29/2009 | US20090027128 Variable gain amplifier |
| 01/29/2009 | US20090027127 System and Method for Amplifier Gain Measurement and Compensation |
| 01/29/2009 | US20090027118 Digital PWM Amplifier Having a Low Delay Corrector |
| 01/29/2009 | US20090027041 Buffer circuit, amplifier circuit, and test apparatus |
| 01/29/2009 | DE102008023384A1 Strom-Rückkopplungs-Instrumentenverstärker mit selbsttätiger Nullpunkt-Einstellung Current-feedback instrumentation amplifier with automatic zero-setting |
| 01/29/2009 | DE102007036555A1 Verfahren und elektrischer Schaltkreis zur Kalibrierung und Offset-Kompensation eines Verstärkers Procedures and electrical circuit for calibration and offset compensation of an amplifier |
| 01/29/2009 | CA2693411A1 Amplifier with a quadrature amplitude modulation (qam) modulated and a continuous wave automatic gain control (agc) circuit |
| 01/28/2009 | EP1758244B1 Acoustic device |
| 01/28/2009 | EP1504526B1 Improved variable gain amplifier |
| 01/28/2009 | CN201188653Y Digital camera capable of automatically playing sound |
| 01/28/2009 | CN201188602Y Audio amplifying circuit |
| 01/28/2009 | CN101355347A Gain amplifier for linear programmable switch capacitance |
| 01/28/2009 | CN100456641C Method and apparatus for optimizing transmitter power efficiency |
| 01/28/2009 | CN100456198C Current switch circuit, amplifier, and mobile terminal |
| 01/27/2009 | US7483681 Power saving in a transmitter |
| 01/27/2009 | US7483500 Narrowband gain control of receiver with digital post filtering |
| 01/27/2009 | US7482887 Multi-band tunable resonant circuit |
| 01/27/2009 | US7482873 Preserving linearity of a rf power amplifier |
| 01/22/2009 | WO2009011827A1 Audio processing using auditory scene analysis and spectral skewness |
| 01/22/2009 | WO2009011826A2 Time-varying audio-signal level using a time-varying estimated probability density of the level |
| 01/22/2009 | WO2009011143A1 Automatic gain control circuit |
| 01/22/2009 | WO2006019785A3 Programmable low noise amplifier and method |
| 01/22/2009 | WO2004112261A9 Control system with selective open-loop operation |
| 01/22/2009 | US20090022338 Apparatus capable of switching volume adjustment mode automatically and volume adjustment method thereof |
| 01/22/2009 | US20090022337 Signal amplifier circuit |
| 01/22/2009 | US20090022331 Systems and Methods for Inducing Effects In A Signal |
| 01/22/2009 | US20090022330 System for processing sound signals in a vehicle multimedia system |
| 01/22/2009 | US20090022329 Method and apparatus for using a sound sensor to adjust the audio output for a device |
| 01/22/2009 | US20090021650 Common receiver for terrestrial TV and CATV |
| 01/22/2009 | US20090021303 Distortion-Driven Power Amplifier Power Supply Controller |
| 01/22/2009 | US20090021293 Low-Power Integrated-Circuit Signal Processor With Wide Dynamic Range |
| 01/21/2009 | EP1820268A4 Voltage clamp for improved transient performance of a collector voltage controlled power amplifier |
| 01/21/2009 | CN101350900A Signal processing apparatus for applying AVC to delayed signals and a method thereof |
| 01/21/2009 | CN101350894A Common receiver for terrestrial TV and CATV |
| 01/21/2009 | CN101350856A Mobile phone capable of automatically regulating earpiece sound volume based on movement velocity and method thereof |
| 01/21/2009 | CN101350605A Improved bipolar type variable gain amplifier with minimum gain control |
| 01/21/2009 | CN101350604A Apparatus and method for automatically switching volume control mode |
| 01/21/2009 | CN101350603A Volume control apparatus and method thereof |
| 01/21/2009 | CN101350602A Signal amplifier circuit and audio system using the same |
| 01/21/2009 | CN100454989C Analog/digital-compatible front-end module |
| 01/21/2009 | CN100454936C Voice emplifying device of mobile communication terminal and its method |
| 01/20/2009 | US7480345 Semiconductor integrated circuit for communication, radio-communication apparatus, and transmission starting method |
| 01/20/2009 | US7479832 Differential amplifying system |
| 01/15/2009 | WO2009009647A1 Power amprifier amplitude modulator system and method |
| 01/15/2009 | US20090016547 Sound volume controller |
| 01/15/2009 | US20090016543 Acoustic signal processing apparatus and acoustic signal processing method |
| 01/15/2009 | US20090016542 Method and Device for Acoustic Management Control of Multiple Microphones |
| 01/15/2009 | US20090016541 Method and Device for Acoustic Management Control of Multiple Microphones |
| 01/15/2009 | US20090015336 Segmented power amplifier |