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Class Information
Number: 329/356
Name: Demodulators > Amplitude modulation demodulator > Suppressed carrier double sideband type
Description: Subject matter where the input AM signal has had the carrier attenuated and both sidebands are present.










Patents under this class:

Patent Number Title Of Patent Date Issued
8102948 Carrier recovery apparatus and method thereof Jan. 24, 2012
7668263 Multi-frequency synthesizing apparatus and method for multi-band RF receiver Feb. 23, 2010
6950481 Digital television receiver converting vestigial-sideband signals to double-sideband AM signals before Sep. 27, 2005
6687313 Digital television receiver converting vestigial-sideband signals to double-sideband AM signals before demodulation Feb. 3, 2004
6426716 Modulated pulse doppler sensor Jul. 30, 2002
6081697 Multi-carrier radio system and radio transceiver implementation Jun. 27, 2000
5742645 Method of digital demodulation of a composite signal Apr. 21, 1998
5459432 Use of a chopper and a sigma-delta modulator for downconverting and digitizing an analog signal including information modulated by a carrier Oct. 17, 1995
5361036 Complex digital demodulator employing Chebychev-approximation derived synthetic sinusoid generation Nov. 1, 1994
5115201 Digital demodulator May. 19, 1992
5077542 Transmission system with suppressed carrier signal amplitude modulation preserving the polarity of the transmitted signal, and corresponding transmitter and receiver Dec. 31, 1991
4893341 Digital receiver operating at sub-nyquist sampling rate Jan. 9, 1990
4794623 Recovery of carrier signal from QAM double sideband suppressed carrier IF signal for use in synchronous demodulation Dec. 27, 1988
4510467 Switched capacitor DSB modulator/demodulator Apr. 9, 1985
4443769 Frequency search system for a phase locked loop Apr. 17, 1984
4430620 Demodulator system for double sideband suppressed carrier amplitude modulation Feb. 7, 1984
4419759 Concurrent carrier and clock synchronization for data transmission system Dec. 6, 1983
4412181 Process for the demodulation of an amplitude modulated signal and demodulator performing this process Oct. 25, 1983
4336616 Discriminator aided phase lock acquisition for suppressed carrier signals Jun. 22, 1982
4253189 Circuit for recovering the carrier of an amplitude modulated synchronous digital signal Feb. 24, 1981
4253066 Synchronous detection with sampling Feb. 24, 1981
4178553 Sampling modulated waves Dec. 11, 1979
4105981 Synchronous demodulation device Aug. 8, 1978
3940716 Double-balanced modulating and demodulating apparatus Feb. 24, 1976











 
 
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