Precision digital phase shift element

Miscellaneous active electrical nonlinear devices – circuits – and – Signal converting – shaping – or generating – Phase shift by less than period of input

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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

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