Patents
Sitemap › H03 - Basic electronic circuitry › H03D - Demodulation or transference of modulation from one carrier to another › H03D 3 - Demodulation of angle-modulated oscillations
Patents for H03D 3 - Demodulation of angle-modulated oscillations (6,449)
01/1991
01/29/1991US4988960 FM demodulation device and FM modulation device employing a CMOS signal delay device
01/22/1991US4987374 FSK demodulator
01/15/1991US4985684 Fully integrated digital FM discriminator
01/02/1991EP0405676A2 Direct-conversion FSK receiver having a DC output independent of frequency drift
01/01/1991US4982193 Analogue to digital conversion: method and apparatus therefor
12/1990
12/27/1990WO1990016115A1 Fm detector with deviation manipulation
12/18/1990CA1278043C Fm communication device with avoidance of interference by substantially same channel fm signal
12/06/1990DE3917740A1 Counter discriminator circuit for frequency modulation - has pulse generator with quartz controlled clock pulse generator(s), and counter
12/04/1990US4975653 FM detector using switched capacitor circuits
11/1990
11/28/1990EP0399758A2 FM-demodulating apparatus
11/27/1990US4974086 Frequency conversion circuit for a color television channel
11/22/1990EP0398351A2 Apparatus for detecting broadcast FM satellite waves
11/22/1990EP0398254A2 FM demodulator
11/13/1990US4970469 Phase detector and frequency demodulator including such a phase detector
11/07/1990EP0395860A2 FM demodulator
11/02/1990CA2013929A1 Demodulator for sampled data fm signals
10/1990
10/23/1990US4965853 Radio receiver circuit with tuning feedback control for a tunable bandpass filter
10/16/1990US4963831 Self adjusting frequency demodulating integrated circuit
10/02/1990US4961184 Integrate and hold amplifier
09/1990
09/26/1990EP0222863B1 Fm feedback demodulator using injection-locked oscillator
09/25/1990US4959620 Frequency demodulation circuit
09/12/1990CN1009610B Home unit for wireless digital telephone system
09/05/1990EP0315686A4 Dual port fm demodulation in phase locked receivers
09/04/1990US4955078 Frequency difference detector (FDD) having automatic gain control and a carrier modulated receiver including the FDD
08/1990
08/28/1990US4953010 FM demodulator including injection locked oscillator/divider
08/28/1990US4952891 Filter circuit with automatic tuning
08/21/1990US4951001 Method for converting a logic gate pack
08/16/1990EP0382675A1 FM receiver and communication systems including same
08/09/1990WO1990009060A1 Integrate and hold amplifier
08/07/1990US4947408 Digital carrier demodulator employing components working beyond normal limits
07/1990
07/31/1990CA1272317A1 Subscriber unit for wireless digital telephone system
07/31/1990CA1272248A1 Fm receivers using three-terminal negative admittance networks of two and three-terminal negative admittance networks
07/31/1990CA1272247A1 Fm receivers using two-terminal negative admittance networks
07/25/1990EP0378719A1 Digital distortion generator
07/24/1990US4943983 Subscriber unit for wireless digital telephone system
07/17/1990US4942365 Synchronous phase and/or frequency detection system
07/11/1990EP0377509A2 Efficient digital frequency division multiplexed signal receiver
06/1990
06/06/1990EP0371193A1 Process and device for the conversion of voltage into frequency
05/1990
05/30/1990EP0370539A1 Phase detector and frequency demodulator including such a phase detector
05/23/1990DE3938671A1 Correcting amplitude and phase faults in direct conversion receiver - multiplying two IF signals with each other and doubling result for obtaining prod. signal
05/23/1990DE3938643A1 Reconstructing lost DC components of IF signals - applying correction signal to each fault-laden IF signal and generating corrected signal
05/22/1990US4928068 FM demodulator
05/22/1990CA1269423A1 Demodulating an angle-modulated signal
05/15/1990US4926443 Correction circuit for a digital quadrature-signal pair
05/15/1990US4926133 For converting the frequency of an input signal to a corresponding voltage
05/15/1990US4926132 FM detector with reduced distortion
04/1990
04/25/1990EP0365330A2 Magnetic reproducing apparatus
04/25/1990EP0365091A2 Filter circuit arrangement
04/25/1990CN1041679A Digital fm demodulator with reduced sampling rate
04/19/1990WO1990004292A1 A digital fm demodulator with a reduced sampling rate
04/19/1990DE3836281C1 Frequency demodulator
04/18/1990EP0364035A2 Radio receiver circuit arrangement
04/11/1990EP0363205A2 FM tuner having phase locked loop FM demodulation circuit
04/11/1990EP0362949A2 Circuit arrangement for the demodulation of frequency-modulated signals
04/03/1990CA1267453A1 Frequency modulation detectors
03/1990
03/28/1990EP0360537A2 Frequency demodulation circuit
03/28/1990EP0256076B1 Analogue to digital conversion: method and apparatus therefor
03/21/1990EP0358649A1 Arrangement for filtering an incoming fm signal.
03/20/1990US4910469 Demodulator for sampled data FM signals
03/14/1990CN1040467A Multiple use of fm band
03/14/1990CN1007196B Tone detector with pseudo locked loop
03/08/1990WO1990002445A1 Multiple use of an fm band
03/07/1990EP0356556A1 Multi-input four quadrant multiplier
03/06/1990US4906942 Frequency demodulator with reversal phenomenon compensation
02/1990
02/28/1990EP0356096A2 Multiple reuse of an FM band
02/28/1990EP0356055A1 Interference suppression for transmitted signals and demodulation of vestigial sideband signals
02/26/1990EP0235264A4 Digital radio frequency receiver.
02/22/1990WO1990001830A1 Interference suppression for transmitted signals and demodulation of vestigial sideband signals
02/20/1990US4903332 Filter and demodulation circuit for filtering an intermediate frequency modulated signal carrying a modulation signal
02/20/1990US4903331 Quadrature detection receiver with separate amplitude and phase control
02/20/1990US4902979 Homodyne down-converter with digital Hilbert transform filtering
01/1990
01/24/1990CN1039165A Frequency conversion circuit for color tv channel
01/17/1990EP0350766A2 Frequency discriminator for integrated circuits
01/10/1990EP0349660A1 Frequency conversion circuit for a television channel
01/10/1990CN1038737A Correction circuit for digital quadrature-signal pair
01/09/1990US4893317 Digital signals and frequency correction in a digital wireless system
01/09/1990US4893316 Digital radio frequency receiver
12/1989
12/21/1989DE3818749A1 Fm-empfangsteil FM receiver unit
12/21/1989DE3818748A1 Fm-empfangsteil FM receiver unit
12/20/1989EP0346986A2 A zero IF receiver
12/19/1989US4888557 Digital subharmonic sampling down-converter
12/14/1989WO1989012357A1 Fm reception unit
12/14/1989WO1989012356A1 Fm reception unit
12/14/1989WO1989012355A1 Fm receptor unit
12/14/1989WO1989012354A1 Fm receptor unit
12/14/1989WO1989012353A1 Fm receptor unit
12/14/1989WO1989012352A1 Fm reception unit
12/12/1989CA1263900A1 Subscriber unit for wireless digital telephone system
12/05/1989US4885801 Method and circuit for converting frequency-modulated signals through at least one intermediate frequency into low frequency signals
11/1989
11/29/1989EP0343892A1 Digital FM demodulating apparatus
11/29/1989EP0343569A2 An FM intermediate-frequency circuit
11/29/1989EP0343273A1 Correction circuit for a pair of digital quadrature signals
11/28/1989US4884037 FM demodulation circuit
11/21/1989US4882768 FM communication device with avoidance of interference by substantially same channel FM signal
11/14/1989US4881240 AM equalizer circuit for digital systems
11/14/1989US4881042 Automatically tunable phase locked loop FM detection system
11/08/1989EP0340846A1 Frequency demodulation circuit
10/1989
10/31/1989US4878251 Interference signal suppressor for a radio receiver
10/31/1989US4878029 Complex digital sampling converter for demodulator
10/17/1989US4875017 Digital FM demodulating apparatus
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