Pulse or digital communications – Equalizers – Automatic
Patent
1997-01-30
1998-10-27
Pham, Chi H.
Pulse or digital communications
Equalizers
Automatic
375 229, 375257, 375347, 455303, 4552761, 333 28R, 333142, H03H 730, H03H 500, H04B 110, H04B 106
Patent
active
058286993
ABSTRACT:
A circuit and method for automatically reducing an electrical path length difference between two electromagnetic signal paths. A counter converts the electrical path length difference to a multi-bit digital signal, and each bit in the signal operates a different one of plural switches which selectively inserts a time delay into one of the two electromagnetic signal paths to reduce the electrical path length difference. A comparator determines whether the electrical path length difference exceeds a threshold. The rectified AC component of a phase detector output is fed to the comparator which activates the counter when the threshold is exceeded. The counter drives the switched time delays in a sweeping fashion until the detected error falls below the threshold, whereupon the sweeping action is terminated.
REFERENCES:
patent: 4052670 (1977-10-01), Watanabe et al.
patent: 4354276 (1982-10-01), Karabinis
patent: 4616364 (1986-10-01), Lee
patent: 4969207 (1990-11-01), Sakamoto et al.
patent: 5038403 (1991-08-01), Leitch
patent: 5263189 (1993-11-01), Kultgen et al.
patent: 5506586 (1996-04-01), Bull
patent: 5530925 (1996-06-01), Garner
patent: 5663735 (1997-09-01), Eshenbach
Harris Corporation
Pham Chi H.
Tran Khai
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