| Patents for H03C 1 - Amplitude modulation (2,214) |
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| 11/28/1996 | CA2222091A1 Methods and apparatus for modulating, demodulating and amplifying |
| 11/26/1996 | US5579341 Multi-channel digital transceiver and method |
| 11/26/1996 | US5578971 Amplitude modulation circuit and method |
| 11/12/1996 | US5574755 I/Q quadraphase modulator circuit |
| 11/12/1996 | US5574409 Apparatus and method for adjusting microwave BPSK modulator and mixer |
| 10/30/1996 | EP0740422A2 Power control circuit for transmission apparatus |
| 10/23/1996 | EP0739082A1 Switched inverter-modulator |
| 10/10/1996 | WO1996031942A1 Multiple access up converter/modulator and method |
| 09/17/1996 | US5557228 Four-quadrant multiplier |
| 09/10/1996 | CA2024385C Predistorter for linearization of electronic and optical signals |
| 09/06/1996 | WO1996021279A3 Frequency synthesizer |
| 08/22/1996 | WO1996025809A1 Method and apparatus for reducing quantization noise |
| 08/22/1996 | CA2185026A1 Method and apparatus for reducing quantization noise |
| 08/21/1996 | EP0727108A1 Power supply modulator circuit for transmitter |
| 08/07/1996 | EP0725478A1 Amplitude modulation circuit and method |
| 08/07/1996 | EP0724654A1 Electric power distribution system for active cathodic protection of reinforced concrete constructions |
| 07/11/1996 | WO1996021291A1 Method and apparatus for improving am compatible digital broadcast analog fidelity |
| 07/11/1996 | WO1996021288A1 Multi-channel digital transceiver and method |
| 07/11/1996 | WO1996021279A2 Frequency synthesizer |
| 07/09/1996 | US5534827 Modulator |
| 06/25/1996 | US5530928 Balanced dual mode mixer apparatus |
| 06/25/1996 | US5530722 Quadrature modulator with integrated distributed RC filters |
| 06/12/1996 | CN1124554A I/Q quadraphase modulator circuit |
| 05/23/1996 | WO1996015584A1 Improved digital synthesizer |
| 05/07/1996 | US5515014 Interface between SAW filter and Gilbert cell mixer |
| 05/01/1996 | EP0709991A2 Apparatus and method for adjusting microwave BPSK modulator and mixer |
| 05/01/1996 | CN1121752A Power amplifier having nested amplitude modulation controller and phase modulation controller |
| 04/18/1996 | WO1996008865A3 Quadrature modulator with integrated distributed rc filters |
| 04/10/1996 | EP0705498A1 Method and device for signal amplitude modulation |
| 04/09/1996 | US5506548 SSB modulator for adjusting the carrier amplitude level of a modulated SSB signal |
| 04/03/1996 | EP0704117A1 Compensated digital frequency synthesizer |
| 03/28/1996 | WO1996009690A1 Circuit for compensating the effects of crosstalk at mixer inputs |
| 03/28/1996 | DE4433478A1 Schaltung zur Neutralisation der Wirkungen des Übersprechens zwischen den Eingangssignalen an Mischern Circuit for the neutralization of the effects of crosstalk between the input signals of mixers |
| 03/21/1996 | WO1996008865A2 Quadrature modulator with integrated distributed rc filters |
| 03/21/1996 | CA2199935A1 Quadrature modulator with integrated distributed rc filters |
| 03/14/1996 | WO1996008079A1 Power supply modulator circuit for transmitter |
| 03/07/1996 | WO1996007242A1 Stacked double balanced mixer circuit |
| 02/27/1996 | US5495209 Switched-inverter modulator for producing modulated high voltage pulses |
| 02/27/1996 | US5495194 High frequency multiplier |
| 02/21/1996 | EP0697765A2 Circuit for phase shift keying |
| 02/07/1996 | CN1116375A Quadrature modulator with adaptive suppression of carrier leakage |
| 01/31/1996 | EP0695066A2 Digital modulator for video signals |
| 01/24/1996 | EP0693843A1 Digital AM transmitter |
| 01/24/1996 | CN1115591A Apparatus for and method of speech digitizing |
| 01/10/1996 | EP0691057A1 I/q quadraphase modulator circuit |
| 01/09/1996 | US5483696 Method and apparatus for using a balanced mixer as a switch |
| 12/13/1995 | EP0431201B1 Linear transmitter |
| 11/30/1995 | WO1995032546A1 Modulator with harmonic mixers |
| 11/30/1995 | DE4434240C1 Dynamic modulation arrangement for transponder with compact structure |
| 11/28/1995 | CA2068425C Fast phase shift adjusting method and device for linear transmitter |
| 11/21/1995 | US5469127 For providing a high power level signal |
| 11/21/1995 | US5469126 I/Q-modulator and I/Q-demodulator |
| 11/14/1995 | US5466353 Electric power distribution system for active cathodic protection of reinforced concrete constructions |
| 11/07/1995 | US5465416 Balanced output high-frequency transducers and mixers using the same with symmetrically located components |
| 11/07/1995 | US5465415 Even order term mixer |
| 10/31/1995 | US5463357 Wide-band microwave modulator arrangements |
| 09/27/1995 | EP0673576A1 Apparatus for and method of speech digitizing |
| 09/26/1995 | US5454013 Amplitude modulation method and broadcasting apparatus for carrying out the method |
| 09/12/1995 | US5450444 For generating an amplitude modulation wave by converting a audio signal |
| 09/07/1995 | DE4425336C1 IF sampling circuit for mobile communications receiver |
| 09/05/1995 | US5448772 Stacked double balanced mixer circuit |
| 08/31/1995 | WO1995023453A1 Power amplifier having nested amplitude modulation controller and phase modulation controller |
| 08/29/1995 | US5446423 Digital single sideband modulator and method |
| 08/22/1995 | CA2035455C Linear transmitter |
| 08/01/1995 | US5438686 Amplitude-modulated broadcast transmitter for various types of modulation, in particular DSB, SSB and ISB |
| 07/27/1995 | WO1995020284A1 I/q quadraphase modulator circuit |
| 07/18/1995 | US5434546 Circuit for simultaneous amplitude modulation of a number of signals |
| 07/05/1995 | EP0661801A1 Quadrature modulator with adaptive suppression of carrier leakage |
| 07/04/1995 | US5430799 Multichannel television signal scrambling and descrambling system and method |
| 07/04/1995 | US5430416 Power amplifier having nested amplitude modulation controller and phase modulation controller |
| 06/27/1995 | US5428840 Monolithic double balanced microstrip mixer with flat conversion loss |
| 06/27/1995 | US5428320 Biphase modulator and method without matching elements |
| 06/15/1995 | WO1995016303A1 Improved quadrature modulator |
| 06/08/1995 | WO1995015500A1 Modulating reflector circuit |
| 05/23/1995 | US5418818 Digital signal processor exciter |
| 05/16/1995 | US5416449 Modulator with harmonic mixers |
| 04/27/1995 | DE4340722C1 Device for suppressing a residual carrier produced during modulation at the transmitting end |
| 04/25/1995 | US5410280 Process and device for amplitude modulation of a radiofrequency signal |
| 04/13/1995 | WO1995008241A3 Apparatus for and method of speech digitizing |
| 03/23/1995 | WO1995008241A2 Apparatus for and method of speech digitizing |
| 03/23/1995 | DE4420376A1 Modulator Modulator |
| 03/23/1995 | CA2149214A1 Apparatus for and method of speech digitizing |
| 03/07/1995 | US5396196 Quadrature modular with adaptive suppression of carrier leakage |
| 03/01/1995 | EP0457872B1 Impedance-matching coupler |
| 02/28/1995 | US5394118 Digital circuit for the extraction of the phase and envelope signals of a single sideband signal |
| 02/21/1995 | US5392009 Low current vector modulator |
| 02/21/1995 | US5392007 Modulator having improved encoding |
| 02/14/1995 | US5389886 Quadrature signals frequency doubler |
| 01/11/1995 | EP0633696A1 Wide-band microwave modulator arrangements |
| 01/11/1995 | EP0633655A1 Variable if transmitter arrangement |
| 01/07/1995 | CA2126821A1 Wide band microwave modulator arrangements |
| 01/05/1995 | WO1995001005A1 Method and device for signal amplitude modulation |
| 01/05/1995 | CA2165795A1 Method and device for signal amplitude modulation |
| 12/28/1994 | EP0630538A1 Binary phase shift keying modulation system or frequency multiplier |
| 12/13/1994 | US5373265 Modulator having oscillator for generating IF and RF signals by division and up-conversion |
| 11/30/1994 | EP0626754A1 Method and arrangement for amplitude modulating of a radio frequency signal |
| 11/29/1994 | CA2124411A1 Process and device for amplitude modulation of a radiofrequency signal |
| 11/22/1994 | US5367272 Digital amplitude modulators involving (1) modification of amplitude during synchronization pulse, (2) automatic gain control of signal components, and/or (3) analog representation of less significant signal components |
| 11/15/1994 | US5365187 Power amplifier utilizing the vector addition of two constant envelope carriers |
| 11/02/1994 | EP0622003A1 Multichannel television signal scrambling and descrambling system and method |