Frequency-encoding circuit for reducing distortion

Details Frequency-encoding circuit for reducing distortion Frequency-encoding circuit for reducing distortion

1982-05-03

1984-04-03

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375 49, 360 43, 340347DD, H04L 2710

Patent

active

044411936

ABSTRACT:
An electronic circuit produces a composite signal in which a low frequency component signal is followed by a high frequency component signal such that the composite signal resists transmission line distortion. To that end, the circuit generates the half-cycle of the high frequency component signal that immediately follows the low frequency component signal with a time duration that is longer than one-half the period of the high frequency by a predetermined amount of time; and then it generates the next half-cycle of the high frequency component signal with a time duration that is less than one-half the period of the high frequency by a like amount of time.

REFERENCES:
patent: 3108261 (1960-04-01), Miller
patent: 3750108 (1973-07-01), Jensen
patent: 3980826 (1976-09-01), Widmer
patent: 4007335 (1977-02-01), Hetherington et al.
patent: 4167760 (1979-09-01), Decker
patent: 4234897 (1980-11-01), Miller
patent: 4287596 (1981-09-01), Chari
patent: 4376958 (1983-03-01), Pettigrew

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