Amplitude and periodic phase modulation transmission system

Details Amplitude and periodic phase modulation transmission system Amplitude and periodic phase modulation transmission system

1979-04-12

1980-08-12

Caldwell, Sr., John W.

Telegraphy

Systems

Alternating or pulsating current

178 661, 332 17, 332 41, H04C 2724

Patent

active

042174678

ABSTRACT:
A carrier is amplitude modulated in an amplitude modulator by a train of unipolar signals which alternately assume a definite voltage level and an arbitrary amplitude of one polarity. Either the carrier before it is modulated or the modulated carrier is phase modulated by the train of unipolar signals. The phase modulation takes place cyclically in that modulated carrier assumes one of predetermined N discrete phases for each occurrence of the unipolar signals. On the receiving side, the received signal is subjected to an envelope detection to extract envelope information.

REFERENCES:
patent: 3341776 (1967-09-01), Doelz et al.
patent: 3412206 (1968-11-01), Bizet et al.
patent: 3486117 (1969-12-01), Groves et al.
patent: 3497618 (1970-02-01), Thayer
patent: 3524023 (1970-08-01), Whang
patent: 3564412 (1971-02-01), Whang et al.
patent: 3619503 (1971-11-01), Ragsdale
patent: 3643023 (1972-02-01), Ragsdale et al.
patent: 3706945 (1972-12-01), Yanagidaira et al.
patent: 3715474 (1973-02-01), Calfee et al.
patent: 3943285 (1976-03-01), Ragsdale et al.

Affiliated with

Also associated with

Rating

Amplitude and periodic phase modulation transmission system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Amplitude and periodic phase modulation transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplitude and periodic phase modulation transmission system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2183633