| Patents for H03D 1 - Demodulation of amplitude-modulated oscillations (4,890) |
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| 06/22/1988 | EP0271601A1 Synchronous demodulator with digital output |
| 06/15/1988 | EP0271294A1 Knock detection circuit |
| 06/15/1988 | EP0271190A2 Superregenerative detector |
| 06/15/1988 | EP0271121A1 Directly mixing synchronous receiver |
| 06/07/1988 | US4749964 Superregenerative detector having a saw device in the feedback circuit |
| 05/03/1988 | US4742566 AM receiver |
| 04/20/1988 | CN86106426A New type identifier |
| 04/12/1988 | US4737730 Peak detector circuit for FM measuring apparatus |
| 04/07/1988 | DE3733096A1 Data demodulating circuit for an FM multiplex radio receiver |
| 04/05/1988 | US4736390 Zero IF radio receiver apparatus |
| 03/31/1988 | DE3733082A1 Fm-multiplex-rundfunkempfaenger FM multiplex rundfunkempfaenger |
| 03/29/1988 | US4734648 Quadrature detection circuit for nuclear magnetic resonance apparatus |
| 03/17/1988 | DE3629597A1 Rectifier |
| 03/16/1988 | EP0259419A1 Double digital demodulator. |
| 03/15/1988 | US4731844 Apparatus for cancelling a pilot signal from a composite signal |
| 03/15/1988 | US4731796 Multi-mode radio transceiver |
| 03/01/1988 | US4729110 Correction of offset and gain errors in RF receivers |
| 02/24/1988 | EP0256287A2 Demodulator for the demodulation of input signals |
| 02/24/1988 | EP0256076A1 Analogue to digital conversion: method and apparatus therefor. |
| 02/23/1988 | US4727333 Circuitry for multiplying a PCM signal by a sinusoid |
| 02/16/1988 | US4726042 A/D converters |
| 02/10/1988 | EP0255553A1 Method for receiving frequency-modulated stereo-multiplex signals |
| 02/02/1988 | US4723318 Active polyphase filters |
| 02/02/1988 | US4723288 Stereo decoding by direct time sampling |
| 01/07/1988 | EP0251703A2 Circuitry for multiplying a signal by a periodic waveform |
| 12/29/1987 | US4716375 Switched-capacitor multiplier circuit |
| 12/08/1987 | US4712222 Adaptive recursive phase offset tracking system |
| 12/01/1987 | US4710723 Receiver having a modulation amplifier for enhancing reception of a desired signal in the presence of interference |
| 11/10/1987 | US4706262 FSK or FM burst signal generating apparatus |
| 11/03/1987 | US4704545 Switched capacitor rectifier circuit |
| 10/13/1987 | CA1228116A1 Half wave demodulation circuit |
| 10/06/1987 | US4698597 Suppressed-fundamental frequency three-way predistorter |
| 10/01/1987 | DE3609917A1 Method for operating a synchronous rectifier and use of the same |
| 09/24/1987 | WO1987005758A1 Double digital demodulator |
| 09/22/1987 | US4696055 RF tuning circuit which provides image frequency rejection |
| 09/09/1987 | EP0235264A1 Digital radio frequency receiver |
| 09/02/1987 | EP0234761A1 Detector-integrator |
| 09/01/1987 | US4691356 AM/FM synchronizing circuit |
| 08/13/1987 | WO1987004880A1 Analogue to digital conversion: method and apparatus therefor |
| 08/11/1987 | US4686389 Logic for a peak value store |
| 08/04/1987 | US4685048 AC-DC transformation circuit |
| 07/28/1987 | US4683444 Generator circuit for generating two sinusoidal signals with a phase difference of 90 degrees |
| 07/21/1987 | US4682060 Noise suppression in an I-F substitution loop |
| 07/14/1987 | US4680793 Noise eliminating circuit |
| 07/14/1987 | US4680792 Demodulator comprising an indicator circuit for use in common to cancellation of a pilot signal and an indication of a reception state |
| 07/07/1987 | US4678947 Simulated transistor/diode |
| 06/23/1987 | US4675613 Noise compensated synchronous detector system |
| 06/16/1987 | CA1223063A1 Receiver for rf-signals comprising a pair of parallel signal paths |
| 05/19/1987 | US4667200 Pulse radar apparatus |
| 04/14/1987 | US4658423 FM-stereo receiver |
| 04/08/1987 | EP0216803A1 Digital zero-if selectivity section. |
| 03/17/1987 | US4651106 Multiplex stereo demodulator |
| 03/12/1987 | WO1987001531A1 Digital radio frequency receiver |
| 03/03/1987 | US4648114 AM stereo demodulator |
| 02/10/1987 | US4642573 Phase locked loop circuit for demodulating suppressed carrier signals |
| 02/04/1987 | EP0210688A2 Signal transmission system and a transmitter and a receiver for use in the system |
| 02/04/1987 | CN85204505U Small-signal linear wave detector for oscillograph |
| 01/28/1987 | EP0209948A1 Switched-capacitor multiplier circuit |
| 01/27/1987 | US4639623 High sensitivity signal detector |
| 01/20/1987 | US4638349 Method of and circuit for digitally demodulating an amplitude-modulated signal produced by suppressed-carrier amplitude modulation of two carriers of the same frequencies in a phase-quadrature relationship |
| 01/17/1987 | CN85102170A Repeated wave demodulation receive |
| 01/13/1987 | US4637003 Amplitude modulated high frequency signal detection device |
| 01/07/1987 | EP0207858A1 Synchronous detector circuit |
| 01/06/1987 | US4634988 Detection of unstable narrowband signals |
| 12/30/1986 | US4633315 Receiver for RF-signals comprising a pair of parallel signal paths |
| 12/30/1986 | EP0206402A2 Method of, and demodulator for, digitally demodulating an SSB signal |
| 12/23/1986 | US4631499 Phase-locked loop for a directly mixing synchronous AM-receiver |
| 12/23/1986 | US4631485 Synchronous demodulator for amplitude modulated signals |
| 12/09/1986 | US4628270 Frequency-agile synchronous demodulator |
| 12/02/1986 | US4626790 Demodulator for amplitude-modulated carrier frequency oscillations |
| 11/12/1986 | EP0201061A2 Receiver for amplitude-modulated time signals |
| 11/12/1986 | EP0200977A2 Digital demodulator |
| 10/28/1986 | US4620314 Method of generating an approximately sinusoidal signal and circuit arrangement for implementing this method, particularly in a stereo demodulator |
| 10/21/1986 | US4618967 Radio receiver |
| 10/14/1986 | US4617521 Sample and hold demodulator with feedback for reduced riffle |
| 10/14/1986 | US4617474 Signal detector |
| 10/09/1986 | WO1986005936A1 Digital zero-if selectivity section |
| 10/08/1986 | EP0196697A1 AM receiver |
| 10/07/1986 | US4616185 Multiplying circuit comprising switched-capacitor circuits |
| 10/01/1986 | CN86101766A Digital zero-if selectivity section |
| 09/30/1986 | US4614911 Balanced modulator circuit |
| 09/24/1986 | EP0195502A2 A/D converter |
| 09/23/1986 | US4613776 Voltage to current conversion circuit |
| 09/17/1986 | CN85107755A Generator circuit for generating two sinusoidal signals with a phase difference of 90 deg. |
| 09/09/1986 | US4611177 Signal demodulator using a multiplying digital-to-analog converter |
| 09/09/1986 | CA1211237A1 Fm stereo multiplex demodulator |
| 09/02/1986 | CA1210838A1 Pulse radar apparatus |
| 08/26/1986 | US4608567 Fast envelope detector with bias compensation |
| 08/19/1986 | US4607393 Receiver circuit comprising two phase control loops |
| 08/12/1986 | US4605867 Peak detector |
| 07/23/1986 | CN85109405A Phase-locked loop particularly for use in a directly mixing synchronous am-receiver |
| 06/25/1986 | EP0185417A2 Active polyphase filters |
| 06/25/1986 | EP0185416A2 Radio receiver/transmitter filters |
| 06/18/1986 | EP0184873A1 Phase-locked loop, particularly for use in a directly mixing synchronous AM receiver |
| 06/18/1986 | EP0184593A1 Generator circuit for producing two quadrature sinusoidal signals |
| 06/10/1986 | US4594557 Traveling wave video detector |
| 05/21/1986 | EP0181458A2 Suppressed-fundamental frequency three-way predistorter |
| 05/14/1986 | EP0181017A1 Simulated transistor/diode |
| 05/10/1986 | CN85107828A Precompensator with three terminal and a fondamental depressor |
| 05/07/1986 | EP0180339A2 A multi-mode radio transceiver |