Method and apparatus for generating two phase-coherent signals w

Details Method and apparatus for generating two phase-coherent signals w Method and apparatus for generating two phase-coherent signals w

1993-03-29

1995-01-17

Sikes, William L.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327105, H03K 500, H03K 600

Patent

active

053829131

ABSTRACT:
A method and apparatus for generating two phase-coherent first and second signals with arbitrary frequency ratio includes programming a first numerically controlled oscillator (NCO) with a first frequency word to produce a first NCO output. The first NCO output is processed to produce the first signal. The first frequency word is multiplied in a multiplier to produce a second frequency word which is corrected in phase relative to the first frequency word. A second NCO is programmed with the corrected second frequency word to produce a second NCO output. The second NCO output is processed to produce the second signal.

REFERENCES:
patent: 4213094 (1980-07-01), Wood
patent: 4305041 (1981-12-01), Frerking
patent: 4443767 (1984-04-01), Reichert et al.
patent: 5164677 (1992-11-01), Hawkins et al.

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