Demodulators – Amplitude modulation demodulator – Having specific distortion – noise or other interference...
Patent
1983-02-09
1985-05-07
Grimm, Siegfried H.
Demodulators
Amplitude modulation demodulator
Having specific distortion, noise or other interference...
329110, 329122, 329126, 375 82, 375 94, H04L 2722
Patent
active
045160791
ABSTRACT:
A coherent phase shift keyed demodulator provides demodulation of a baseband data message through the use of a reference vector signal generator which employs an intermediate reference vector generated from the phase of an incoming carrier signal which, under certain conditions, is reversed in phase prior to being combined with a previous value of the reference vector to generate an updated reference vector signal. The demodulator incorporates a polarity sampler, an image signal generator and a zero crossing detector associated with a phase angle vector generator. A summation vector generator receives a signal from the phase angle vector generator and, in turn, provides signals to a phase detector and a reference vector generator. The demodulator also includes apparatus to perform concurrent carrier detection and bit synchronization operations.
REFERENCES:
patent: 3739277 (1973-06-01), Schneider et al.
patent: 3745250 (1973-07-01), Gerst
patent: 3815029 (1974-06-01), Wilson
patent: 4164036 (1979-08-01), Wax
patent: 4186348 (1980-01-01), Lautier et al.
patent: 4190802 (1980-02-01), Levine
patent: 4246653 (1981-01-01), Malm
patent: 4246654 (1981-01-01), Malm
patent: 4298986 (1981-11-01), Hughes
patent: 4308503 (1981-12-01), Scott
patent: 4311964 (1982-01-01), Boykin
patent: 4318049 (1982-03-01), Mogensen
patent: 4320345 (1982-03-01), Waggener
patent: 4336500 (1982-06-01), Attwood
patent: 4339725 (1982-07-01), Ichiyoshi
Grimm Siegfried H.
Lanyi William D.
Westinghouse Electric Corp.
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