| Patents for H03D 3 - Demodulation of angle-modulated oscillations (6,449) |
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| 04/02/1981 | WO1981000941A1 Improved tracking filter for fm threshold extension |
| 03/10/1981 | US4255714 GaAs Dual-gate FET frequency discriminator |
| 03/03/1981 | US4254503 Radio receiver for tone modulated signals |
| 03/03/1981 | US4254378 Modified Foster-Seeley frequency discriminator |
| 03/03/1981 | US4254346 Monostable multivibrator |
| 02/24/1981 | CA1096484A1 Facsimile receiver with improved fm demodulator |
| 01/20/1981 | US4246541 System for removing interference distortion in the demodulated signal of a frequency-modulated signal |
| 01/13/1981 | CA1093687A1 Playback apparatus |
| 12/30/1980 | US4242602 Phase comparator circuit with gated isolation circuit |
| 12/02/1980 | US4236523 Frequency to voltage converter for cardiac communication system |
| 11/25/1980 | US4236117 FM Detector using a phase shift network and an analog multiplier |
| 11/04/1980 | CA1089028A1 Filter and demodulation arrangement |
| 10/28/1980 | CA1088638A1 Frequency selective detector circuit |
| 10/07/1980 | US4227158 Multifrequency control from a single crystal |
| 09/30/1980 | US4225975 Noise suppression circuit for use with FM receiver |
| 09/09/1980 | CA1085470A1 Angle-modulation detector, for example, a quadrature type phase detector |
| 09/02/1980 | US4220974 AFT circuit |
| 08/26/1980 | US4219778 Signal processing circuit for an FM signal receiver |
| 07/22/1980 | US4214299 Frequency-voltage converter |
| 07/08/1980 | US4211979 Circuit arrangement for eliminating waveform distortion of an angle-modulated signal transmitted over multipaths |
| 06/10/1980 | US4207535 Two-pole, fixed-tuned monolithic crystal frequency discriminator |
| 05/13/1980 | US4203134 FM Signal demodulator with defect detection |
| 05/13/1980 | CA1077579A1 Frequency discriminator |
| 05/06/1980 | CA1077144A1 Phase locked loop |
| 04/30/1980 | EP0010462A1 Frequency demodulation device and receiver comprising same |
| 04/15/1980 | US4198609 Phase tracked loop frequency demodulator |
| 03/11/1980 | US4193033 Quadrature transposition stage |
| 02/19/1980 | CA1072189A1 Side locked loop with circuit for preventing sidelock |
| 01/22/1980 | US4185243 Method and apparatus for providing a standby signal |
| 12/25/1979 | US4180777 Tuning meter for use with a pulse count FM demodulation circuit |
| 11/20/1979 | CA1066781A1 Universal automotive electronic radio |
| 11/06/1979 | CA1065972A1 Complementary field effect transistor signal multiplier |
| 10/30/1979 | CA1065420A1 Multiple electrode crystal frequency discriminator circuit |
| 10/30/1979 | CA1065410A1 Fm discriminator |
| 10/09/1979 | CA1064111A1 Digital click removal and squelch control circuit for an fm receiver |
| 09/25/1979 | CA1063186A1 Recursive detector-oscillator circuit |
| 09/18/1979 | CA1062779A1 Detector for am-fm signals |
| 08/28/1979 | US4166251 System for removing interference distortion in the demodulated signal of a frequency-modulated signal |
| 08/14/1979 | CA1060552A1 Frequency discriminating circuit |
| 08/07/1979 | US4163945 System for removing interference distortion in the demodulated signal of a frequency-modulated signal |
| 08/07/1979 | CA1060101A1 Fm demodulator having squelch circuit using bucket brigade delay line |
| 07/10/1979 | US4160955 Compatible AM-FM frequency discriminator |
| 06/26/1979 | CA1057367A1 Fm demodulator |
| 06/12/1979 | CA1056495A1 Phase compressor for phase modulated signal |
| 05/01/1979 | US4152733 Playback apparatus |
| 04/17/1979 | US4150338 Frequency discriminators |
| 03/27/1979 | US4146842 Noise muting circuit in fm receiver |
| 03/27/1979 | CA1051567A1 Tuning system for am/fm receivers |
| 03/20/1979 | US4145663 Digital synchronous detectors using time division for extracting carrier wave and demodulated signals |
| 03/13/1979 | US4144501 Quadrature FM detector including low reactance phase shifter |
| 03/13/1979 | US4144500 Noise elimination for FM demodulators |
| 03/06/1979 | CA1050125A1 Synchronous demodulator circuit |
| 03/06/1979 | CA1050119A1 Double quadrature fm receiver |
| 02/27/1979 | US4142241 Harmonic insensitive phase sensitive demodulator |
| 02/20/1979 | US4140928 Monostable multivibrator |
| 02/06/1979 | CA1048108A1 Fm receiver with detector for multi-path reception |
| 01/16/1979 | US4135191 Coherent demodulator |
| 01/16/1979 | US4135158 Universal automotive electronic radio |
| 01/02/1979 | CA1045689A1 Phase locked loop for use with local oscillator |
| 12/26/1978 | US4131852 Single dispersive delay line compressive receiver |
| 12/26/1978 | CA1045219A1 Phase demodulator |
| 12/19/1978 | US4130806 Filter and demodulation arrangement |
| 11/28/1978 | US4127825 Linear frequency discriminator |
| 11/28/1978 | US4127819 Frequency discriminator apparatus |
| 10/24/1978 | US4122394 Phase-shifting multiplication type FM signal demodulation circuit |
| 10/10/1978 | US4119919 Frequency discriminator circuit |
| 09/26/1978 | US4117410 Phase locked loop signal demodulator and squelch circuit |
| 09/26/1978 | CA1039365A1 Signal transfer circuit |
| 09/19/1978 | US4115744 Programable frequency acoustic wave discriminator |
| 09/05/1978 | CA1038076A1 Noise compensation in a t.v. receiver |
| 08/29/1978 | US4110700 Electronically tunable microwave frequency FET discriminator |
| 08/15/1978 | US4107624 Automatic frequency-tracking circuit |
| 08/15/1978 | US4107478 Angle modulated wave demodulation system |
| 07/18/1978 | US4101837 Threshold extension fm demodulator apparatus for wide band width fm signals |
| 07/11/1978 | US4100500 Angle-modulation detector having push-pull input applied through high-pass filters |
| 06/27/1978 | US4097812 Frequency selective detector circuit |
| 06/13/1978 | US4095187 Demodulation system for a multi-level multi-phase superposition-modulated carrier wave |
| 05/23/1978 | US4091330 Circuit and method for demodulating a frequency modulated signal |
| 05/16/1978 | US4090145 Digital quadrature demodulator |
| 05/02/1978 | US4087757 Constant delay resonant tank circuit combination for frequency discrimination |
| 05/02/1978 | US4087756 FM Feedback demodulator having threshold extension circuit with two-pole crystal filters |
| 03/14/1978 | US4079330 System for demodulating angle-modulated signals |
| 01/03/1978 | US4066972 System for demodulating angle-modulated signals |
| 12/13/1977 | US4063184 Signal transfer circuit |
| 11/01/1977 | US4056803 Method and apparatus for extracting derivatives from surface acoustic waves |
| 10/18/1977 | US4054840 FM demodulator using multiplier to which delayed and undelayed input signals are applied |
| 09/20/1977 | US4050026 Device for frequency discrimination of electrical signals |
| 08/16/1977 | US4042884 Phase demodulator with offset frequency reference oscillator |
| 08/09/1977 | US4041335 Piezoelectric ceramic resonator with vibration damping means |
| 07/19/1977 | US4037165 Synchronous signal generating system with phase-locked loop circuit |
| 07/12/1977 | US4035736 FM discriminator having low noise characteristics |
| 07/12/1977 | US4035730 FM noise threshold extension demodulator apparatus |
| 06/28/1977 | US4032967 Complementary field effect transistor signal multiplier |
| 05/31/1977 | US4027268 Demodulator for PM or FM signals |
| 05/31/1977 | US4027264 Phase lock loop multitone interference canceling system |
| 05/17/1977 | US4024461 FM discriminator |
| 05/10/1977 | US4022970 Facsimile receiver with improved FM demodulator |
| 05/03/1977 | US4021752 Phase locked loop for use with local oscillator |
| 05/03/1977 | US4021742 Phase compressor for phase modulated signal |
| 04/19/1977 | US4019145 Synchro rate generator |