Patents for H03D 3 - Demodulation of angle-modulated oscillations (6,449) |
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01/29/1991 | US4988960 FM demodulation device and FM modulation device employing a CMOS signal delay device |
01/22/1991 | US4987374 FSK demodulator |
01/15/1991 | US4985684 Fully integrated digital FM discriminator |
01/02/1991 | EP0405676A2 Direct-conversion FSK receiver having a DC output independent of frequency drift |
01/01/1991 | US4982193 Analogue to digital conversion: method and apparatus therefor |
12/27/1990 | WO1990016115A1 Fm detector with deviation manipulation |
12/18/1990 | CA1278043C Fm communication device with avoidance of interference by substantially same channel fm signal |
12/06/1990 | DE3917740A1 Counter discriminator circuit for frequency modulation - has pulse generator with quartz controlled clock pulse generator(s), and counter |
12/04/1990 | US4975653 FM detector using switched capacitor circuits |
11/28/1990 | EP0399758A2 FM-demodulating apparatus |
11/27/1990 | US4974086 Frequency conversion circuit for a color television channel |
11/22/1990 | EP0398351A2 Apparatus for detecting broadcast FM satellite waves |
11/22/1990 | EP0398254A2 FM demodulator |
11/13/1990 | US4970469 Phase detector and frequency demodulator including such a phase detector |
11/07/1990 | EP0395860A2 FM demodulator |
11/02/1990 | CA2013929A1 Demodulator for sampled data fm signals |
10/23/1990 | US4965853 Radio receiver circuit with tuning feedback control for a tunable bandpass filter |
10/16/1990 | US4963831 Self adjusting frequency demodulating integrated circuit |
10/02/1990 | US4961184 Integrate and hold amplifier |
09/26/1990 | EP0222863B1 Fm feedback demodulator using injection-locked oscillator |
09/25/1990 | US4959620 Frequency demodulation circuit |
09/12/1990 | CN1009610B Home unit for wireless digital telephone system |
09/05/1990 | EP0315686A4 Dual port fm demodulation in phase locked receivers |
09/04/1990 | US4955078 Frequency difference detector (FDD) having automatic gain control and a carrier modulated receiver including the FDD |
08/28/1990 | US4953010 FM demodulator including injection locked oscillator/divider |
08/28/1990 | US4952891 Filter circuit with automatic tuning |
08/21/1990 | US4951001 Method for converting a logic gate pack |
08/16/1990 | EP0382675A1 FM receiver and communication systems including same |
08/09/1990 | WO1990009060A1 Integrate and hold amplifier |
08/07/1990 | US4947408 Digital carrier demodulator employing components working beyond normal limits |
07/31/1990 | CA1272317A1 Subscriber unit for wireless digital telephone system |
07/31/1990 | CA1272248A1 Fm receivers using three-terminal negative admittance networks of two and three-terminal negative admittance networks |
07/31/1990 | CA1272247A1 Fm receivers using two-terminal negative admittance networks |
07/25/1990 | EP0378719A1 Digital distortion generator |
07/24/1990 | US4943983 Subscriber unit for wireless digital telephone system |
07/17/1990 | US4942365 Synchronous phase and/or frequency detection system |
07/11/1990 | EP0377509A2 Efficient digital frequency division multiplexed signal receiver |
06/06/1990 | EP0371193A1 Process and device for the conversion of voltage into frequency |
05/30/1990 | EP0370539A1 Phase detector and frequency demodulator including such a phase detector |
05/23/1990 | DE3938671A1 Correcting amplitude and phase faults in direct conversion receiver - multiplying two IF signals with each other and doubling result for obtaining prod. signal |
05/23/1990 | DE3938643A1 Reconstructing lost DC components of IF signals - applying correction signal to each fault-laden IF signal and generating corrected signal |
05/22/1990 | US4928068 FM demodulator |
05/22/1990 | CA1269423A1 Demodulating an angle-modulated signal |
05/15/1990 | US4926443 Correction circuit for a digital quadrature-signal pair |
05/15/1990 | US4926133 For converting the frequency of an input signal to a corresponding voltage |
05/15/1990 | US4926132 FM detector with reduced distortion |
04/25/1990 | EP0365330A2 Magnetic reproducing apparatus |
04/25/1990 | EP0365091A2 Filter circuit arrangement |
04/25/1990 | CN1041679A Digital fm demodulator with reduced sampling rate |
04/19/1990 | WO1990004292A1 A digital fm demodulator with a reduced sampling rate |
04/19/1990 | DE3836281C1 Frequency demodulator |
04/18/1990 | EP0364035A2 Radio receiver circuit arrangement |
04/11/1990 | EP0363205A2 FM tuner having phase locked loop FM demodulation circuit |
04/11/1990 | EP0362949A2 Circuit arrangement for the demodulation of frequency-modulated signals |
04/03/1990 | CA1267453A1 Frequency modulation detectors |
03/28/1990 | EP0360537A2 Frequency demodulation circuit |
03/28/1990 | EP0256076B1 Analogue to digital conversion: method and apparatus therefor |
03/21/1990 | EP0358649A1 Arrangement for filtering an incoming fm signal. |
03/20/1990 | US4910469 Demodulator for sampled data FM signals |
03/14/1990 | CN1040467A Multiple use of fm band |
03/14/1990 | CN1007196B Tone detector with pseudo locked loop |
03/08/1990 | WO1990002445A1 Multiple use of an fm band |
03/07/1990 | EP0356556A1 Multi-input four quadrant multiplier |
03/06/1990 | US4906942 Frequency demodulator with reversal phenomenon compensation |
02/28/1990 | EP0356096A2 Multiple reuse of an FM band |
02/28/1990 | EP0356055A1 Interference suppression for transmitted signals and demodulation of vestigial sideband signals |
02/26/1990 | EP0235264A4 Digital radio frequency receiver. |
02/22/1990 | WO1990001830A1 Interference suppression for transmitted signals and demodulation of vestigial sideband signals |
02/20/1990 | US4903332 Filter and demodulation circuit for filtering an intermediate frequency modulated signal carrying a modulation signal |
02/20/1990 | US4903331 Quadrature detection receiver with separate amplitude and phase control |
02/20/1990 | US4902979 Homodyne down-converter with digital Hilbert transform filtering |
01/24/1990 | CN1039165A Frequency conversion circuit for color tv channel |
01/17/1990 | EP0350766A2 Frequency discriminator for integrated circuits |
01/10/1990 | EP0349660A1 Frequency conversion circuit for a television channel |
01/10/1990 | CN1038737A Correction circuit for digital quadrature-signal pair |
01/09/1990 | US4893317 Digital signals and frequency correction in a digital wireless system |
01/09/1990 | US4893316 Digital radio frequency receiver |
12/21/1989 | DE3818749A1 Fm-empfangsteil FM receiver unit |
12/21/1989 | DE3818748A1 Fm-empfangsteil FM receiver unit |
12/20/1989 | EP0346986A2 A zero IF receiver |
12/19/1989 | US4888557 Digital subharmonic sampling down-converter |
12/14/1989 | WO1989012357A1 Fm reception unit |
12/14/1989 | WO1989012356A1 Fm reception unit |
12/14/1989 | WO1989012355A1 Fm receptor unit |
12/14/1989 | WO1989012354A1 Fm receptor unit |
12/14/1989 | WO1989012353A1 Fm receptor unit |
12/14/1989 | WO1989012352A1 Fm reception unit |
12/12/1989 | CA1263900A1 Subscriber unit for wireless digital telephone system |
12/05/1989 | US4885801 Method and circuit for converting frequency-modulated signals through at least one intermediate frequency into low frequency signals |
11/29/1989 | EP0343892A1 Digital FM demodulating apparatus |
11/29/1989 | EP0343569A2 An FM intermediate-frequency circuit |
11/29/1989 | EP0343273A1 Correction circuit for a pair of digital quadrature signals |
11/28/1989 | US4884037 FM demodulation circuit |
11/21/1989 | US4882768 FM communication device with avoidance of interference by substantially same channel FM signal |
11/14/1989 | US4881240 AM equalizer circuit for digital systems |
11/14/1989 | US4881042 Automatically tunable phase locked loop FM detection system |
11/08/1989 | EP0340846A1 Frequency demodulation circuit |
10/31/1989 | US4878251 Interference signal suppressor for a radio receiver |
10/31/1989 | US4878029 Complex digital sampling converter for demodulator |
10/17/1989 | US4875017 Digital FM demodulating apparatus |