| Patents for H03C 1 - Amplitude modulation (2,214) |
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| 06/03/2008 | US7382208 Operating method for the resonant operation of high-pressure lamps in longitudinal mode, and an associated system and electronic ballast |
| 05/29/2008 | US20080123774 Polar modulator arrangement, polar modulation method, filter arrangement and filtering method |
| 05/27/2008 | US7379714 Method and apparatus for dynamically adjusting a transmitter's impedance |
| 05/22/2008 | US20080116987 Method and system for spur supression in modulators |
| 05/20/2008 | US7376410 Methods and systems for down-converting a signal using a complementary transistor structure |
| 05/20/2008 | US7376396 Ratiometric transmit path architecture for communication systems |
| 05/20/2008 | US7376118 System and method for optimizing contiguous channel operation with cellular reuse |
| 05/13/2008 | US7372332 Optimizing power consumption in amplifiers |
| 05/07/2008 | EP1665519A4 Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| 05/06/2008 | US7369819 Digital amplitude modulation transmitter with pulse width modulating RF drive |
| 05/06/2008 | US7369624 Carrier suppression type modulator with encoded modulating signals |
| 05/01/2008 | US20080099706 Variable frequency and amplitude dither for electronically controlled valves |
| 04/30/2008 | CN100385801C Intermodulation distortion improving device and method for wide area communication terminal |
| 04/23/2008 | EP1914882A1 Cancelling distortion |
| 04/03/2008 | WO2008039594A1 Signal processing method and power amplifier device |
| 04/03/2008 | US20080080622 Multichannel Quadrature Modulation |
| 03/26/2008 | EP1902525A2 Polar loop radio frequency (rf) transmitter having increased dynamic range amplitude control |
| 03/18/2008 | US7346124 Wideband quadrature generation technique requiring only narrowband components and method thereof |
| 03/12/2008 | EP1898630A2 Digital radio frequency (RF) modulator |
| 03/12/2008 | EP1897309A2 Method and apparatus for generating m-ary cpm waveforms from a superposition of pam waveforms |
| 03/06/2008 | US20080057882 Model network of a nonlinear circuitry |
| 03/04/2008 | US7340012 Single and multiple sinewave modulation and demodulation techniques employing carrier-zero and carrier-peak data-word start and stop |
| 03/04/2008 | US7340010 Forward error correction coding for hybrid AM in-band on-channel digital audio broadcasting systems |
| 02/26/2008 | US7336934 Transmission modulation apparatus |
| 02/19/2008 | US7333780 Polar modulation transmission apparatus and radio communication apparatus |
| 02/14/2008 | WO2008019287A2 Replica linearized power amplifier |
| 02/14/2008 | WO2008019285A2 Low distortion radio frequency (rf) limiter |
| 02/12/2008 | CA2126850C Multi-mode signal processing |
| 02/07/2008 | US20080031384 Transmission circuit and communication device |
| 02/07/2008 | US20080031383 Replica Linearized Power Amplifier |
| 02/07/2008 | US20080031382 Low Distortion Radio Frequency (RF) Limiter |
| 02/05/2008 | CA2347162C System and method for frequency up-conversion |
| 01/31/2008 | US20080026706 Polar Modulating Circuit, Polar Coordinate Modulating Method, Integrated Circuit and Radio Transmission Device |
| 01/17/2008 | US20080014872 Method and device for reducing exposure to undesirable electromagnetic radiation |
| 01/16/2008 | EP1878121A2 A digital amplitude modulation transmitter with pulse width modulating rf drive |
| 01/15/2008 | US7319368 Method and circuit arrangement for load modulation in a combination comprised of a transmitting and a receiving oscillator circuit |
| 01/10/2008 | US20080007334 Tuneable Circuit for Canceling Third Order Modulation |
| 01/09/2008 | CN101103522A Separation of AM cochannel signals in an overloaded signal environment |
| 01/03/2008 | US20080003958 Carrier state judging device and transmitting device |
| 01/03/2008 | US20080001757 System And Method For Measuring RFID Signal Strength Within Shielded Locations |
| 01/02/2008 | EP1872349A2 Low power transmission provisioning for wireless network devices |
| 12/25/2007 | US7313175 Method for avoiding interference radiation of AM transmitters used in digital transmission |
| 12/21/2007 | WO2006113884A3 Low power transmission provisioning for wireless network devices |
| 12/18/2007 | US7310069 Antenna for tire pressure monitoring wheel electronic device |
| 12/13/2007 | WO2007142035A1 Differential oscillation device, and modulator |
| 12/13/2007 | WO2007121112A3 Systems, methods and devices for dual closed loop modulation controller for nonlinear rf amplifier |
| 12/11/2007 | US7308242 Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same |
| 12/06/2007 | US20070281631 Arrangement for transmitting signals via an antenna feed line in a mobile radio subscriber station |
| 12/06/2007 | US20070280378 Method and system for communication spectral backward compatibility |
| 11/29/2007 | US20070274415 Single and multiple sinewave modulation and demodulation techniques employing carrier-zero and carrier-peak data-word start and stop |
| 11/29/2007 | US20070273449 Power Amplifier with Stabilising Network |
| 11/28/2007 | EP1860457A2 Transmission signal generating unit and radar transmission device using the same |
| 11/20/2007 | US7298396 Apparatus and method for monitoring transmission systems using embedded test signals |
| 11/15/2007 | US20070262827 Error Calculation Circuit For Mixer |
| 11/15/2007 | CA2644657A1 Spread spectrum ask/ook transmitter |
| 11/14/2007 | EP1694285A4 A transmitter circuit and method for modulation distortion compensation |
| 11/13/2007 | US7295817 Wireless data communication unit |
| 11/13/2007 | US7295628 Stereo multiplex encoder (MPX) for FM transmission |
| 11/08/2007 | WO2007125255A1 Device and method for generating a pulsed output signal, in particular an ultra wide band signal, from a pulsed origin signal |
| 11/08/2007 | US20070259627 Method and system for frequency up-conversion with modulation embodiments |
| 11/06/2007 | US7292829 Power amplifier efficiency |
| 11/06/2007 | US7292286 Multichannel quadrature modulation |
| 11/01/2007 | WO2007122562A2 A modulator for amplitude-modulating a signal |
| 10/30/2007 | US7288992 Bias circuit for a bipolar transistor |
| 10/25/2007 | WO2007121112A2 Systems, methods and devices for dual closed loop modulation controller for nonlinear rf amplifier |
| 10/25/2007 | US20070248187 Vsb transmission system |
| 10/23/2007 | US7286613 Process and device for modulating a carrier with amplitude and phase error compensation |
| 10/10/2007 | CN101053160A A transmitter circuit and method for modulation distortion compensation |
| 10/09/2007 | US7280809 Method for adjusting transmission parameters from a transmitter for digital radio signals |
| 10/09/2007 | US7280805 LO leakage and sideband image calibration system and method |
| 10/03/2007 | EP1841058A1 Method and system to improve local oscillator signal rejection in single-sideband radiofrequency up-converters |
| 10/02/2007 | US7277681 Interrogator of moving body identification device |
| 09/25/2007 | US7274266 Radio frequency excitation arrangement |
| 09/19/2007 | EP1495540B1 Return to zero and sampling pulse generating circuits and method for direct digital up conversion |
| 09/19/2007 | CN101039101A Noise suppression techniques for fixed frequency pulse-width modulation circuit |
| 09/13/2007 | WO2006113030A3 A digital amplitude modulation transmitter with pulse width modulating rf drive |
| 09/11/2007 | US7269232 Device for producing a phase and amplitude modulated radio frequency signal |
| 09/06/2007 | US20070207748 Antenna interface unit |
| 09/06/2007 | DE102006008790A1 Modulationseinrichtung für einen Sendepfad, Verfahren zur Signalverarbeitung in einem Sendepfad und Sendepfad mit der Modulationseinrichtung Modulation means for a transmission path, A method of signal processing in a transmission path and transmit path to the modulating means |
| 09/05/2007 | CN101032076A Method for estimating signal magnitude, noise power, and signal-to-noise ratio of received signals |
| 08/28/2007 | US7263135 Transmitting method and transmitter apparatus |
| 08/14/2007 | US7257384 Methods and apparatus for detecting the envelope of RF power signals |
| 08/08/2007 | CN101015120A Thermal-mechanical signal processing |
| 08/08/2007 | CN101015119A System and method for current-mode amplitude modulation |
| 07/26/2007 | WO2006130343A3 Method and apparatus for adaptive polling in a wireless communication device |
| 07/26/2007 | DE102006042503A1 Transpondersystem mit Signalübertragungsverfahren Transponder system with signal transmission method |
| 07/24/2007 | US7248843 Antenna selection system and method |
| 07/24/2007 | US7248639 Method for reducing the out-of-band emission in AM transmitters for digital transmission |
| 07/18/2007 | CN101001077A Timing adjusting method and timing adjusting apparatus |
| 07/17/2007 | US7245886 Method and system for frequency up-conversion with modulation embodiments |
| 07/12/2007 | US20070161363 Single sideband mixer and method of extracting single sideband signal |
| 07/05/2007 | WO2007040515A3 Training signals for selecting antennas and beams in mimo wireless lans |
| 07/05/2007 | US20070155347 Matching network |
| 07/04/2007 | CN1993886A Low current direct conversion transmitter architecture |
| 07/03/2007 | US7239889 Antenna system for GSM/WLAN radio operation |
| 07/03/2007 | US7239228 Apparatus for mediating communication between controller and transponders of many moving objects and method for controlling the same |
| 06/28/2007 | US20070149149 Mobile terminal apparatus and channel compensation method of the same |
| 06/26/2007 | US7236746 Method and apparatus for measurement and identification of co-channel interfering transmitters |
| 06/20/2007 | CN1983800A 变频器和调谐器 Drive and tuner |
| 06/19/2007 | US7233777 Separation of AM cochannel signals in an overloaded signal environment |