Precise digitally programmed frequency source

Details Precise digitally programmed frequency source Precise digitally programmed frequency source

1980-08-22

1982-09-14

Malzahn, David H.

Boots, shoes, and leggings

364721, 328 14, H03B 1900

Patent

active

043498876

ABSTRACT:
A digitally controlled oscillator for generating a plurality of signals spaced apart by very small frequency increments. The system comprises first means for generating a source signal of frequency f.sub.c, second means responsive to said first signal to produce a first binary output signal of frequency Nf.sub.c /2.sup.n, where n is a variable integer. Also provided are first frequency divider means responsive to said first binary output signal to produce a second binary output signal of frequency Nf.sub.c /2.sup.n+m, where m is another integer and second frequency divider means also responsive to said first signal f.sub.c to produce a third binary output signal of frequency f.sub.c /2.sup.T. Further provided are logic means responsive to said second and third binary output signals to produce a fourth binary output signal of average frequency f.sub.c /2.sup.T +Nf.sub.c /2.sup.n+m.

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