| Patents for H03D 1 - Demodulation of amplitude-modulated oscillations (4,890) |
|---|
| 02/28/1990 | EP0355956A2 Signal processing for cancelling perturbations |
| 02/27/1990 | US4905307 Synchronous receiver with direct mixing |
| 02/27/1990 | US4905085 Synchronous sampling system |
| 02/26/1990 | EP0235264A4 Digital radio frequency receiver. |
| 02/20/1990 | US4903331 Quadrature detection receiver with separate amplitude and phase control |
| 01/24/1990 | EP0351601A1 Detection circuit for small amplitude high-frequency signals |
| 01/17/1990 | EP0350663A2 Circuit arrangement for the demodulation of a subcarrier |
| 01/10/1990 | CN1038737A Correction circuit for digital quadrature-signal pair |
| 01/09/1990 | US4893341 Digital receiver operating at sub-nyquist sampling rate |
| 01/09/1990 | US4893316 Digital radio frequency receiver |
| 01/03/1990 | EP0349237A2 A stereo multiplex demodulator |
| 01/03/1990 | EP0348416A1 Zener diode detector circuit. |
| 12/27/1989 | EP0347807A1 Detecting circuit |
| 12/26/1989 | US4890066 Envelope detector |
| 12/20/1989 | EP0346986A2 A zero IF receiver |
| 12/20/1989 | EP0346435A1 High-speed analog multiplier - absolute value detector |
| 12/14/1989 | DE3819461A1 Demodulation arrangement |
| 12/14/1989 | DE3819460A1 Passive, synchronous demodulator |
| 12/13/1989 | EP0345881A2 Synchronous demodulator |
| 12/06/1989 | EP0344467A1 Quadrature receiver |
| 12/05/1989 | US4885546 Digital demodulator for AM or FM |
| 11/29/1989 | EP0343273A1 Correction circuit for a pair of digital quadrature signals |
| 11/23/1989 | EP0342740A2 Circuit arrangement for the synchronisation of a frequency controlled oscillator |
| 11/07/1989 | US4879694 Difar demultiplexer circuit |
| 10/04/1989 | EP0335037A1 Direct conversion radio |
| 10/03/1989 | US4872207 Automatic IF tangent lock control circuit |
| 09/26/1989 | US4870684 PLL circuit for generating output signal synchronized with input signal by switching frequency dividing ratio |
| 09/26/1989 | US4870511 Device for demodulating a frequency-modulated signal |
| 09/20/1989 | CN1035746A Tv signal frequency transforming circuit |
| 09/13/1989 | EP0332250A1 Synchronous demodulation circuit for a carrier-modulated television |
| 09/13/1989 | CN1035594A Circuit arrangement for linearly amplifying and demodulating am-modulated signal, and integrated semiconductor element for said circuit arrangement |
| 09/12/1989 | US4866396 Temperature stabilized RF detector |
| 09/06/1989 | EP0331246A1 Logarithmic amplifier |
| 09/06/1989 | EP0331234A1 Circuit arrangement for linearly amplifying and demodulating an AM-modulated signal, and integrated semiconductor element for said circuit arrangement |
| 09/05/1989 | US4864640 Directly mixing synchronous receiver |
| 08/29/1989 | US4862098 Continuous-wave-modulation detectors using prediction methods |
| 08/22/1989 | US4860354 Arrangement for decoding a stereo multiplex signal |
| 08/22/1989 | US4859960 Digital signal demodulation |
| 08/15/1989 | US4857859 AM digital demodulator |
| 08/01/1989 | US4853643 High signal to noise ratio amplitude detector |
| 08/01/1989 | US4853641 Differential phase reduction circuit for a video demodulating system and method |
| 07/25/1989 | US4852123 Nearly DC IF phase locked transceiver |
| 07/19/1989 | EP0323996A1 Oscillator network and quadrature network for radio receiver |
| 07/13/1989 | WO1989006403A1 High-speed analog multiplier - absolute value detector |
| 06/22/1989 | DE3741610A1 Arrangement for demodulating single-sideband signals |
| 05/24/1989 | EP0316952A2 Stereo demodulator and a demodulating method thereof |
| 05/24/1989 | EP0316878A2 PLL circuit for generating output signal synchronized with input signal by switching frequency dividing ratio |
| 05/23/1989 | US4833639 High-speed analog multiplier--absolute value detector |
| 05/23/1989 | US4833417 Synchronous demodulation system with digital output |
| 05/02/1989 | US4827515 Digital demodulator |
| 04/27/1989 | DE3733967A1 Quadrature superposition method for demodulating the carrier-frequency received signal in radio clock receivers |
| 04/12/1989 | EP0310960A2 Digital lock-in amplifier |
| 04/11/1989 | US4821322 FM multiplex decoding |
| 04/11/1989 | US4820995 Temperature stabilized RF detector |
| 04/11/1989 | US4819600 Knock detection system for an internal combustion engine |
| 04/05/1989 | CN1003834B Directly mixing synchronous am-receiver |
| 03/29/1989 | EP0309032A1 Envelope detector |
| 03/29/1989 | EP0308520A1 Digital-Demodulator |
| 03/28/1989 | US4817167 Method of receiving frequency-modulated stereo multiplex signals |
| 03/28/1989 | US4817150 Oscillator frequency control arrangement for a stereo decoder |
| 03/28/1989 | US4816769 BPSK demodulator and FM receiver for digital data pagers |
| 03/15/1989 | CN1031786A Oscillator frequency control arrangement for stereo decoder |
| 03/15/1989 | CN1031784A Controlled oscillator |
| 03/09/1989 | WO1989002193A1 A controlled oscillator |
| 03/08/1989 | EP0305974A2 An oscillator frequency control arrangement for a stereo decoder |
| 03/08/1989 | EP0305604A1 Receiver comprising parallel signal paths |
| 03/08/1989 | EP0305603A1 Gain and phase correction in a dual branch receiver |
| 03/07/1989 | US4811096 Video detector employing PLL system |
| 02/21/1989 | US4807146 Digital lock-in amplifier |
| 02/14/1989 | US4804924 Digital double demodulator |
| 02/07/1989 | US4803700 Method of, and demodulator for, digitally demodulating an SSB signal |
| 01/26/1989 | WO1989000791A1 Oscillator network for radio receiver |
| 01/10/1989 | US4797634 Controlled oscillator |
| 01/04/1989 | EP0297848A2 Temperature stabilized RF detector |
| 01/03/1989 | US4795922 Signal coupling network |
| 12/13/1988 | US4791380 Detector circuit with dual-diode compensation |
| 12/07/1988 | EP0293828A2 Circuit device for demodulating DSB modulated signals and method therefor |
| 12/06/1988 | US4789897 Frequency converting apparatus for converting an RF television signal to a video signal employing low IF techniques |
| 12/06/1988 | US4789837 Switched capacitor mixer/multiplier |
| 12/06/1988 | CA1246253A1 Fsk or fm burst signal generating apparatus |
| 11/23/1988 | EP0291826A1 Digital demodulator |
| 11/17/1988 | EP0291345A2 A temperature stabilized RF detector |
| 11/17/1988 | EP0290830A2 Demodulator for the demodulation of input signals |
| 11/15/1988 | US4785352 Sampled data amplitude detector as for an AGC multiplier |
| 11/02/1988 | EP0216803A4 Digital zero-if selectivity section. |
| 11/01/1988 | US4782532 Automatic IF tangent lock control circuit |
| 11/01/1988 | CA1244101A1 Am stereo demodulator |
| 10/26/1988 | CN88101130A Automatic if tangent lock control circuit |
| 10/18/1988 | US4779054 Digital inphase/quadrature product detector |
| 10/05/1988 | EP0285252A2 Digital signal demodulation |
| 09/28/1988 | CN87101494A Direct hybrid synchrodyne receiver |
| 09/22/1988 | WO1988007286A1 Zener diode detector circuit |
| 09/21/1988 | EP0282607A1 Frequency-converter for television signal |
| 08/30/1988 | US4768187 In a radio communication system |
| 08/03/1988 | EP0276632A1 Non-linear function generating arrangement in an integrated circuit |
| 08/03/1988 | EP0276507A1 Arrangement for decoding a stereo multiplex signal |
| 07/20/1988 | CN86108783A 饱和检波器 Saturation detector |
| 07/19/1988 | CA1239449A1 Radio receiver |
| 07/05/1988 | CA1238952A1 Demodulation circuit |
| 06/29/1988 | EP0272726A1 Device for demodulating a frequencymodulated signal |