| Patents for H03C 1 - Amplitude modulation (2,214) |
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| 03/31/2005 | US20050068096 Apparatus for continuous phase quadrature amplitude modulation and demodulation |
| 03/29/2005 | CA2369227C Digital transmitter system and method |
| 03/24/2005 | WO2005027337A1 Power oscillator for control of waveshape and amplitude |
| 03/24/2005 | US20050064827 Amplifier power control in frequency hopping applications and methods |
| 03/24/2005 | CA2538479A1 Power oscillator for control of waveshape and amplitude |
| 03/23/2005 | CN1194312C Method for switching grouped signal in different frequency system and its switching circuit |
| 03/17/2005 | US20050059362 Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| 03/17/2005 | DE10337084A1 Generator of norm-conform signals, e.g. pulsed signals in network transmission system, for generating and material, or predistortion of certain specified signals, with generator unit |
| 03/15/2005 | US6867646 Demodulation apparatus for digital audio amplifier |
| 03/10/2005 | WO2005022740A2 Method and apparatus providing integrated load matching using adaptive power amplifier compensation |
| 03/09/2005 | EP1055283B1 Phase modulating transmitter |
| 03/09/2005 | CN1593004A Alternate timing signal for a vestigial sideband modulator |
| 03/09/2005 | CN1592286A Apparatus and method for frequency generation in mobile communication system |
| 03/09/2005 | CN1192478C Method for modulating amplitude of antenna signal |
| 03/08/2005 | US6864755 Switched reactance modulated E-class oscillator design |
| 03/03/2005 | WO2005020482A2 Thermal-mechanical signal processing |
| 03/03/2005 | WO2005020434A2 Shell type actuator |
| 03/02/2005 | EP1509998A2 Apparatus for detecting the envelope of rf power signals |
| 02/24/2005 | US20050041805 Miniaturized holographic communications apparatus and methods |
| 02/24/2005 | US20050041758 Holographic ranging apparatus and methods |
| 02/24/2005 | US20050041757 Frequency-hopped holographic communications apparatus and methods |
| 02/24/2005 | US20050041756 Real domain holographic communications apparatus and methods |
| 02/24/2005 | US20050041752 Pulse-shaped holographic communications apparatus and methods |
| 02/16/2005 | CN1581878A Device for producing signal in accordance with standard |
| 02/15/2005 | US6856200 Protection circuit and method for RF power amplifiers in WLAN tranceivers |
| 02/10/2005 | WO2005013410A2 Enhanced holographic communications apparatus and method |
| 02/10/2005 | CA2534741A1 Enhanced holographic communications apparatus and method |
| 02/02/2005 | EP1502355A2 Improved method and apparatus for tracking a resonant frequency |
| 02/02/2005 | EP1502350A2 Frequency modulator using switched capacitors |
| 02/02/2005 | CN1575589A RF system integrated with RF switch and RF modulation |
| 02/01/2005 | US6850575 Single side band modulator |
| 01/25/2005 | CA2347078C Method and system for down-converting an electromagnetic signal |
| 01/20/2005 | US20050014479 Apparatus and method for frequency generation in mobile communication system |
| 01/20/2005 | US20050013385 Carrier suppression type modulator with encoded modulating signals |
| 01/20/2005 | US20050012489 High frequency pulse width modulation |
| 01/19/2005 | EP1499010A2 Frequency translator, and method |
| 01/13/2005 | US20050009494 Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same |
| 01/12/2005 | EP1495540A2 Return to zero and sampling pulse generating circuits and method for direct digital up conversion |
| 12/28/2004 | US6836650 Methods and systems for down-converting electromagnetic signals, and applications thereof |
| 12/28/2004 | US6836183 Chireix architecture using low impedance amplifiers |
| 12/22/2004 | EP1488587A1 Resonant power converter for radio frequency transmission and method |
| 12/14/2004 | US6829924 Tire pressure monitoring system with low frequency initiation approach |
| 12/09/2004 | US20040247047 Electromagnetic wave transmitter systems, methods and articles of manufacture |
| 11/30/2004 | US6826389 Transmitter and method of generating a transmission signal |
| 11/18/2004 | WO2003090353A3 Improved method and apparatus for tracking a resonant frequency |
| 11/18/2004 | US20040227559 Low-noise, high-linearity analog multiplier |
| 11/18/2004 | DE10319636A1 Verfahren zur Modulation eines Trägersignals sowie Verfahren zur Demodulation eines modulierten Trägersignals A method for modulating a carrier signal as well as methods for demodulating a modulated carrier signal |
| 11/17/2004 | EP1478145A1 Method for detecting quadrature modulator carrier leak adjusting point by geometrical analysis/calculation method, carrier leak adjusting method, and quadrature modulation apparatus |
| 11/16/2004 | US6819913 Low-noise frequency converter with strong rejection of image frequency |
| 11/11/2004 | WO2004098041A1 Method for modulating a carrier signal, and method for demodulating a modulated carrier signal |
| 11/11/2004 | US20040224658 UP converter mixer linearization improvement |
| 11/02/2004 | US6813485 Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same |
| 10/28/2004 | WO2004093309A1 Modulator and correction method thereof |
| 10/26/2004 | US6810090 Direct digital vestigial sideband (VSB) modulator |
| 10/26/2004 | US6810027 Multi-carrier transmitting apparatus and method |
| 10/20/2004 | EP1469591A1 Up convertor mixer linearisation improvement |
| 10/20/2004 | EP1469590A1 Up convertor mixer linearisation |
| 10/14/2004 | US20040203546 RF system integrated with RF switch and RF modulation |
| 09/30/2004 | WO2004084514A1 Quadrature modulator which employs four 90-degrees-shifted carriers |
| 09/23/2004 | US20040184559 Quadra-polar modulator |
| 09/14/2004 | US6792050 Ask modulation apparatus and method |
| 09/07/2004 | US6788193 System and method for tire pressure monitoring providing automatic tire location recognition |
| 09/01/2004 | EP1451648A2 Envelope modulator for haptic feedback devices |
| 08/25/2004 | EP1450480A1 Low-noise, high-linearity analog multiplier |
| 08/19/2004 | US20040162038 Method for detecting quadrature modulator carrier leak adjusting point by geometrical analysis/calculation method, carrier leak adjusting method, and quadrature modulation apparatus |
| 08/03/2004 | US6771139 Microwave pulse generator |
| 07/29/2004 | US20040146118 Method and apparatus for RF carrier suppression in a multi-modulator transmitter |
| 07/15/2004 | US20040136438 Method and apparatus for generating RF waveforms having aggregate energy with desired spectral characteristics |
| 07/15/2004 | US20040135700 Switching modulator |
| 07/08/2004 | WO2003103149A3 Apparatus for detecting the envelope of rf power signals |
| 07/08/2004 | US20040132417 Electronic circuit, modulation method, information processing device, and information processing method |
| 07/07/2004 | CN1156963C Stepped adjustable notch filter |
| 06/24/2004 | DE10256944A1 Abgleichfreier HF-Oszillator Balance Free RF oscillator |
| 06/17/2004 | WO2004051842A1 Binary transmitting station with direct modulation of the oscillator |
| 06/17/2004 | DE10255864A1 Circuit with frequency generator and radio sender receivers comprising this has LC oscillator to suppress high harmonics and a frequency divider unit |
| 06/15/2004 | US6751265 Method and system of amplitude modulation using dual/split channel unequal amplification |
| 05/19/2004 | CN1497836A Electronic circuit, modulating method, information processing devcie and information processing method |
| 05/13/2004 | WO2003047088A3 Frequency modulator using switched capacitors |
| 05/12/2004 | CN1496012A Digital radio-frequency emitter and method |
| 05/04/2004 | US6731757 Multichannel digital signal generation method and apparatus |
| 04/29/2004 | WO2004036810A2 Method and apparatus for generating rf waveforms having aggregate energy with desired spectral characteristics |
| 04/29/2004 | WO2004036736A1 Chireix architecture using low impedance amplifiers |
| 04/27/2004 | US6728527 Double up-conversion modulator |
| 04/27/2004 | US6725712 System and method for tire pressure monitoring with automatic tire location recognition |
| 04/22/2004 | US20040075492 Chireix architecture using low impedance amplifiers |
| 04/22/2004 | US20040075490 Demodulation apparatus for digital audio amplifier |
| 04/21/2004 | EP1411694A2 Amplitude modulation with wave shaping |
| 04/21/2004 | EP1125359B1 Method and system for down-converting an electromagnetic signal |
| 04/20/2004 | US6724832 Vestigial sideband generator particularly for digital television |
| 04/14/2004 | CN1489312A Carvier-modulation method and apparatus with amplitude and phase error compensation |
| 04/13/2004 | US6720833 Modulator and oscillator for microwave and milliwave use |
| 04/06/2004 | US6717961 Format converting apparatus and digital broadcasting receiver |
| 03/18/2004 | US20040053594 Siingle sideband mixer and method of extracting single sideband signal |
| 03/18/2004 | US20040052370 Multichannel quadrature modulation |
| 03/18/2004 | US20040051594 Power oscillator for control of waveshape and amplitude |
| 03/11/2004 | US20040047431 Process and device for modulating a carrier with amplitude and phase error compensation |
| 03/11/2004 | US20040047429 RF digital transmitter |
| 03/10/2004 | EP1396973A1 Process and device for modulation of a carrier with amplitude and phase error compensation |
| 03/10/2004 | EP1396931A1 Modulator and transmitter for IR codes and method |
| 03/04/2004 | DE10238711A1 Verfahren und Vorrichtung zum Erzeugen und diskontinuierlichen Senden einer Grundschwingung in einer vorbestimmten Trägerfrequenz Method and apparatus for producing discontinuous and sending a fundamental wave in a predetermined carrier frequency |