| Patents for H03C 1 - Amplitude modulation (2,214) |
|---|
| 03/29/1999 | CA2248480A1 Digital signal processing apparatus |
| 03/24/1999 | EP0903846A2 Double-balanced modulator and quadri-phase shift keying device |
| 03/18/1999 | WO1999013568A1 Low noise gilbert multiplier cells and quadrature modulators, and related methods |
| 03/18/1999 | CA2301734A1 Low noise gilbert multiplier cells and quadrature modulators, and related methods |
| 03/17/1999 | EP0902532A1 Circuit arrangement |
| 03/02/1999 | US5878335 Composite direct digital synthesizer |
| 02/24/1999 | CN1209010A Double balance modulator and four phase phase-shift modulator |
| 02/10/1999 | EP0896426A1 Method for simulating a nonlinear amplifier with envelope memory |
| 01/28/1999 | WO1999004558A1 Method and device for vestigial sideband modulation of a television transmitter |
| 01/26/1999 | US5864586 Radio apparatus with offset compensating circuit |
| 01/21/1999 | DE19731012A1 Verfahren und Anordnung zur Restseitenbandmodulation eines Fernsehsenders Method and arrangement for vestigial sideband modulation of a TV channel |
| 01/12/1999 | US5859876 Method and apparatus for improving AM compatible digital broadcast analog fidelity |
| 01/12/1999 | CA2161352C Apparatus and method for adjusting microwave bpsk modulator and mixer |
| 12/23/1998 | EP0885510A1 Method and apparatus for routing a digitized rf signal to a plurality of paths |
| 12/08/1998 | US5848100 Frequency conversion and modulation circuits |
| 12/08/1998 | US5847623 Low noise Gilbert Multiplier Cells and quadrature modulators |
| 11/26/1998 | WO1998053552A1 Single side-band modulation system for use in digitally implemented multicarrier transmission systems |
| 11/26/1998 | CA2289537A1 Single side-band modulation system for use in digitally implemented multicarrier transmission systems |
| 11/17/1998 | US5838210 Method and apparatus for generating a modulated signal |
| 10/15/1998 | WO1998045936A1 Frequency doubling of a quadrature-amplitude modulated signal using a frequency multiplier |
| 10/13/1998 | US5822685 Modulating reflector circuit |
| 10/06/1998 | US5818883 Multi-channel digital transceiver and method |
| 09/22/1998 | US5812605 Multi-channel digital transceiver and method |
| 09/17/1998 | WO1998040966A1 System and method for high speed digital data casting concurrent with amplitude modulated broadcasts |
| 09/09/1998 | EP0862816A1 Method and device for removing signal residues in quadrature signal modulator-demodulators |
| 09/01/1998 | US5801595 Device and method for digital vestigial sideband modulation |
| 08/25/1998 | US5798674 Band Limited AM modulator using linear power amplification |
| 08/12/1998 | EP0858156A1 Video signal transmission equipment |
| 08/11/1998 | US5793817 DC offset reduction in a transmitter |
| 07/29/1998 | CN1189024A Device and method for digital vestigial sideband modulation |
| 07/15/1998 | EP0853409A2 Device and method for digital vestigial sideband modulation |
| 07/10/1998 | CA2225709A1 Device and method for digital vestigial sideband modulation |
| 06/23/1998 | USRE35829 Binary phase shift keying modulation system and/or frequency multiplier |
| 06/16/1998 | US5767750 Modulator |
| 06/02/1998 | US5760622 Frequency converting circuit |
| 05/27/1998 | CN1182976A Full wave type amplitude modulation method and circuit thereof |
| 05/19/1998 | US5754650 Simultaneous multichannel television access control system and method |
| 05/19/1998 | US5754597 Method and apparatus for routing a digitized RF signal to a plurality of paths |
| 05/06/1998 | CN1181164A Radio apparatus |
| 05/05/1998 | US5748683 Multi-channel transceiver having an adaptive antenna array and method |
| 04/28/1998 | US5745523 Multi-mode signal processing |
| 04/22/1998 | EP0673576A4 Apparatus for and method of speech digitizing. |
| 04/21/1998 | US5742901 Balanced modulator |
| 04/15/1998 | EP0835549A1 Methods and apparatus for modulating, demodulating and amplifying |
| 04/08/1998 | EP0834989A2 A device incorporating a tunable thin film bulk acoustic resonator for performing amplitude and phase modulation |
| 04/07/1998 | US5736906 Power supply modulator circuit for transmitter |
| 04/02/1998 | WO1998013943A1 Method and apparatus for detecting and cancelling unwanted transmitter modulation |
| 03/12/1998 | DE19635330A1 Verfahren und Anordnung zur modulatorindividuellen Kompensation von Gleichspannungs-Abweichungen eines Modulators Method and apparatus for modulator individual compensation of DC deviations of a modulator |
| 03/12/1998 | DE19634486A1 Amplitude modulated wave generating circuit for anti-theft car alarm |
| 03/11/1998 | EP0828385A2 Digital amplitude modulation amplifier and television broadcasting machine |
| 03/11/1998 | CN1175801A Balanced modulator |
| 03/10/1998 | US5727023 Apparatus for and method of speech digitizing |
| 03/05/1998 | WO1998009371A1 Process and system for modulator-individual compensation of direct current deviations of a modulator |
| 02/17/1998 | US5719527 Method and apparatus for amplifying, modulating and demodulating |
| 02/03/1998 | US5715532 Frequency converter apparatus with distortion compensating circuit |
| 02/03/1998 | US5714917 Device incorporating a tunable thin film bulk acoustic resonator for performing amplitude and phase modulation |
| 02/03/1998 | US5714916 Modulator |
| 01/07/1998 | EP0817368A1 Balanced modulator |
| 12/17/1997 | EP0724654B1 Electric power distribution system for active cathodic protection of reinforced concrete constructions |
| 12/03/1997 | EP0810729A1 Frequency conversion & modulation circuits |
| 12/03/1997 | EP0809890A2 Radio apparatus |
| 12/02/1997 | US5694093 Wideband IQ modulator with RC/CR automatic quadrature network |
| 11/26/1997 | EP0809195A2 Analog waveform communications reduced instruction set processor |
| 11/11/1997 | US5686870 Mixer |
| 11/04/1997 | US5684435 Analog waveform communications reduced instruction set processor |
| 10/29/1997 | EP0803147A1 Transmitter comprising carrier suppression and dc offset reduction means |
| 10/22/1997 | EP0801848A2 Frequency synthesizer |
| 10/21/1997 | US5680078 Mixer |
| 10/16/1997 | WO1997038490A1 Interrupt modulation method and appratus |
| 10/15/1997 | CN1162373A Quadrature modulator with integrated distributed RC filters |
| 10/14/1997 | US5678224 Mixer circuit |
| 09/25/1997 | WO1997035412A1 Method and apparatus for routing a digitized rf signal to a plurality of paths |
| 08/21/1997 | WO1997023051A3 Radio apparatus |
| 08/19/1997 | US5659272 Amplitude modulation method and apparatus using two phase-modulated signals |
| 07/02/1997 | EP0781467A2 Quadrature modulator with integrated distributed rc filters |
| 07/01/1997 | US5644260 RC/CR automatic quadrature network |
| 06/26/1997 | WO1997023051A2 Radio apparatus |
| 06/11/1997 | CN1151632A Balanced modulator |
| 05/29/1997 | WO1997019521A1 Method and device for removing signal residues in quadrature signal modulator-demodulators |
| 05/20/1997 | US5631610 Single side-band modulation system for use in digitally implemented multicarrier transmission systems |
| 05/14/1997 | CN1149941A Multiple access up converter/modulator and method |
| 05/13/1997 | US5629655 Integrated distributed RC low-pass filters |
| 05/01/1997 | WO1997015980A1 Transmitter comprising carrier suppression and dc offset reduction means |
| 04/23/1997 | EP0769875A2 Video modulator arrangements |
| 04/23/1997 | EP0769847A1 Balanced modulator |
| 04/22/1997 | US5623219 Maximal voltage three-phase PWM without third harmonic injection |
| 04/16/1997 | EP0639306B1 Method and apparatus for amplifying, modulating and demodulating |
| 04/09/1997 | EP0767536A2 An ECL clock phase shifter with CMOS digital control |
| 04/02/1997 | CN1146669A Power control circuit or transmission equipment |
| 03/19/1997 | CN1145707A Method and appts. for reducing quantization noise |
| 02/13/1997 | WO1997005704A1 Multi-channel transceiver having an adaptive antenna array and method |
| 02/11/1997 | US5602874 Method and apparatus for reducing quantization noise |
| 02/05/1997 | EP0630538A4 Binary phase shift keying modulation system or frequency multiplier. |
| 02/05/1997 | CN1142293A Multi-channel digital transceiver and method thereof |
| 02/05/1997 | CN1142147A Device for regulating control-modulation device of microwave doble-phase phase shifting key and frequency mixing device, and method thereof |
| 01/28/1997 | CA2134903C Quadrature signals frequency doubler |
| 12/18/1996 | EP0749204A1 Amplitude modulator |
| 12/11/1996 | EP0746901A1 Digital signal processor exciter |
| 12/10/1996 | US5584059 DC offset reduction in a zero-if transmitter |
| 11/28/1996 | WO1996037948A1 Methods and apparatus for modulating, demodulating and amplifying |