Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input
Patent
1995-12-21
1997-07-22
Callahan, Timothy P.
Miscellaneous active electrical nonlinear devices, circuits, and
Signal converting, shaping, or generating
Phase shift by less than period of input
327231, 327115, 327117, 377 48, H03K 2342
Patent
active
056507380
ABSTRACT:
A precision digital phase shift element for achieving precise phase shift of an input pulse train signal. The output is a pulse train at a frequency equal to the input signal frequency divided by N, and having N equally spaced phase states. The relative phase state of the output signal is reliably controlled by selective deletion of pulses from the input signal pulse train. The selective deletion can be achieved by selectively gating the input pulse train, or by use of a dual modulus frequency divider circuit.
REFERENCES:
patent: 3721904 (1973-03-01), Verhoeven
patent: 4870366 (1989-09-01), Pelletier
patent: 5020079 (1991-05-01), Vancraeynest
Hsu Steve I.
Nussbaum Howard S.
Posey William P.
Taylor Stephen D.
Alkov Leonard A.
Callahan Timothy P.
Denson-Low Wanda K.
Hughes Aircraft Company
Le Dinh T.
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