| Patents for H03D 1 - Demodulation of amplitude-modulated oscillations (4,890) |
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| 07/16/1997 | EP0783794A1 Amplitude demodulator |
| 07/01/1997 | US5644368 Composite signal detecting apparatus having associated filter |
| 07/01/1997 | US5644260 RC/CR automatic quadrature network |
| 06/12/1997 | DE19545280A1 Demodulating simultaneously amplitude and phase modulated functions for technical diagnosis |
| 06/11/1997 | EP0778667A1 Demodulator circuit using gyrator circuit |
| 06/10/1997 | US5638406 Carrier detector |
| 06/10/1997 | US5638140 FPLL having AFC filter with limited phase shift |
| 06/10/1997 | CA2110149C High frequency signal detecting circuit |
| 06/03/1997 | US5636252 Automatic gain control of radio receiver for receiving digital high-definition television signals |
| 06/03/1997 | US5635876 Phase difference and amplitude correction circuit |
| 05/29/1997 | WO1997019521A1 Method and device for removing signal residues in quadrature signal modulator-demodulators |
| 05/27/1997 | US5633896 AM compatible digital waveform demodulation using a dual FFT |
| 05/22/1997 | DE19648057A1 Amplitude fault correction for quadrature detector |
| 05/21/1997 | EP0774832A1 Quadrature demodulator |
| 05/20/1997 | US5631610 Single side-band modulation system for use in digitally implemented multicarrier transmission systems |
| 05/15/1997 | WO1997017696A1 Method and apparatus for the coherent demodulation of an amplified modulated carrier using a dual track and hold amplifier and the application of said method and apparatus to measurement of magnetic media performance |
| 05/13/1997 | US5629959 Wideband square-law detector having a triangular frequency characteristic as well as a transmission system and a receiver including such a detector |
| 04/30/1997 | DE19538935A1 Digital AM demodulator |
| 04/29/1997 | US5625327 Modified Colpitts oscillator for driving an antenna coil and generating a clock signal |
| 04/09/1997 | CN1147318A Synchronous detector and method for synchronous detection |
| 03/26/1997 | CN1146267A Carrier recovery system for vestigial sideband signal |
| 03/25/1997 | US5614851 High-accuracy, low-power peak-to-peak voltage detector |
| 03/18/1997 | CA2076935C Demodulating device |
| 03/12/1997 | EP0701746B1 Terrestrial and satellite television reception tuner |
| 03/06/1997 | WO1997008877A1 Am compatible digital waveform demodulation using a dual fft |
| 03/06/1997 | CA2233063A1 Am compatible digital waveform demodulation using a dual fft |
| 03/05/1997 | CN1144589A Phase detector in carrier recovery network for vestigial sideband signal |
| 03/05/1997 | CN1144580A Blind equalizer for vestigial sideband signal |
| 03/05/1997 | CN1144579A Carrier independent timing recovery system for vestigial sideband modulated signal |
| 02/25/1997 | US5606581 Method and apparatus for the cancellation of interference in electrical systems |
| 02/25/1997 | US5606579 Digital VSB detector with final IF carrier at submultiple of symbol rate, as for HDTV receiver |
| 02/18/1997 | US5604929 System for correcting quadrature gain and phase errors in a direct conversion single sideband receiver independent of the character of the modulated signal |
| 02/12/1997 | CN1142709A Carrier amplituding method controlled by keys and models therefor |
| 02/11/1997 | US5603111 Synchronous tracking AM receiver |
| 02/04/1997 | US5600680 High frequency receiving apparatus |
| 01/22/1997 | EP0755125A2 Method for the reduction of secondary receiving positions in homodyne receivers with time variable carrier frequency |
| 01/22/1997 | EP0755124A2 Procedure for increasing the sensitivity of a homodyn receiver |
| 01/22/1997 | CN1140929A Full-wave rectifying circuit having only one differential pair circuit with function for combining pair of half-wave rectified currents into full-wave rectified current |
| 01/21/1997 | US5596606 Synchronous detector and methods for synchronous detection |
| 01/14/1997 | US5594384 Enhanced peak detector |
| 01/08/1997 | EP0752185A1 Carrier recovery system for a vestigial sideband signal |
| 01/08/1997 | EP0752173A1 Blind equalizer for a vestigial sideband signal |
| 01/08/1997 | EP0752172A1 Carrier independent timing recovery system for a vestigial sideband modulated signal |
| 01/08/1997 | CN1139998A 接收电路 Receiving circuit |
| 01/07/1997 | US5592513 Synchronous modulator and methods for synchronous modulation |
| 01/02/1997 | EP0648391B1 Synchronous tracking am receiver |
| 01/01/1997 | CN1139507A Circuit for the acquisition of a carrier signal by applying a substitute pilot to a synchronous demodulator |
| 01/01/1997 | CN1139320A Transmitter having temperature-compensated detector |
| 12/17/1996 | US5586148 Coherent detection system |
| 12/04/1996 | EP0745863A1 Electronic discharge detector for electrical apparatus |
| 11/13/1996 | EP0742647A1 Receiving circuit |
| 11/12/1996 | US5574755 I/Q quadraphase modulator circuit |
| 11/06/1996 | EP0741478A2 Circuit for performing arithmetic operations in a demodulator |
| 10/29/1996 | US5570395 Method and apparatus for the cancellation of interference in electrical systems |
| 10/29/1996 | US5570055 Demodulating logarithmic amplifier |
| 10/17/1996 | DE19535356C1 Method of demodulating amplitude modulated high frequency signals |
| 10/08/1996 | US5563914 Carrier detector |
| 10/08/1996 | US5563550 Recovery of data from amplitude modulated signals with self-coherent demodulation |
| 10/02/1996 | EP0734631A1 Chrominance demodulation with sampling of the input signal at three times the colour subcarrier frequency |
| 10/01/1996 | US5561716 Demodulator |
| 09/18/1996 | EP0673565B1 Generation of a coherent signal using an adaptive filter for cancelling and synchronous detection in a digital radio receiver |
| 09/17/1996 | US5557632 Demodulation and roll-off filter apparatus |
| 09/11/1996 | CN1130838A Digital VSB detector with final 1-F carrier at submultiple of symbol rate for dhtV receiver |
| 08/27/1996 | US5550507 Demodulator employing cyclic switching of the gain factor of an operational amplifier between different predetermined values |
| 08/20/1996 | US5548243 Demodulator for demodulating a single side band signal, a real zero single side band signal and a frequency modulated signal, and a carrier signal reproducing circuit for the demodulator |
| 08/20/1996 | CA2110301C Detector |
| 07/30/1996 | US5541959 Method and apparatus for the cancellation of interference in electrical systems |
| 07/23/1996 | US5539779 Automatic offset control circuit for digital receiver |
| 07/23/1996 | US5539356 Apparatus for detecting a signal |
| 07/02/1996 | US5533057 High frequency signal detecting circuit |
| 06/25/1996 | US5530929 Homodyne receiver minimizing oscillator leakage |
| 06/19/1996 | EP0717493A2 Demodulator for a complex vestigial sideband signal |
| 06/19/1996 | CN1125017A Terrestrial and satellite television reception tuner |
| 06/12/1996 | CN1124554A I/Q quadraphase modulator circuit |
| 06/06/1996 | WO1996017441A1 Receiving circuit |
| 06/05/1996 | EP0715457A2 Signal detecting apparatus |
| 05/22/1996 | EP0713288A2 Radio frequency detector circuit |
| 05/15/1996 | DE4440113A1 Amplitude-keyed VHF or UHF signal receiver |
| 05/02/1996 | WO1996013127A1 Chrominance demodulation with sampling of the input signal at three times the colour subcarrier frequency |
| 05/01/1996 | CN1121658A Oscillation keying modulation OSK mode for digital signal |
| 04/23/1996 | US5510737 Method and apparatus for sampling of electrical signals |
| 04/23/1996 | CA2061772C Synchronous detector |
| 04/18/1996 | WO1996011527A1 Quadrature sampling system and hybrid equalizer |
| 04/18/1996 | WO1996011526A1 Digital qam and vsb modulator and demodulator |
| 04/04/1996 | WO1996010290A1 Amplitude demodulator |
| 03/31/1996 | CA2133371A1 Circuit arrangement for demodulating a signal |
| 03/28/1996 | DE4434451A1 Amplitudendemodulator Amplitude demodulator |
| 03/27/1996 | EP0702867A1 Heterodyne receiver having low intermediate frequency |
| 03/20/1996 | EP0701746A1 Terrestrial and satellite television reception tuner |
| 03/12/1996 | US5499300 Stereo and dual audio signal identifying circuit |
| 03/06/1996 | EP0700190A1 Method and circuit for demodulating a digitally amplitude-modulated carrier signal |
| 03/06/1996 | EP0699362A1 Wideband square-law detector having a triangular frequency characteristic as well as a transmission system and a receiver including such a detector |
| 02/29/1996 | DE4430029A1 Direct conversion radiotelephone |
| 02/27/1996 | US5495194 High frequency multiplier |
| 02/21/1996 | EP0697114A1 Data recording system incorporating flaw detection circuitry |
| 02/21/1996 | CN1117231A 相位差和幅度校正电路 Phase and amplitude correction circuit |
| 02/14/1996 | EP0696862A1 Phasedetector for control of carrier recovery |
| 02/13/1996 | US5491434 Circuit and method of differential amplitude detection |
| 02/08/1996 | DE4423259A1 Wide band limited signal receiver |
| 02/07/1996 | CN1116464A Method and apparatus for detecting an input signal level |