Efficient fractional divider

Details Efficient fractional divider Efficient fractional divider

1999-03-31

2000-10-03

Wambach, Margaret R.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Frequency or repetition rate conversion or control

377 48, H03K 2100

Patent

active

061278637

ABSTRACT:
In accordance with the invention, a method and structure are provided for obtaining a ratio of M/(2.sup.N +K) by feeding various carry-out (and/or complemented carry-out) signals from full-adders back to various frequency control inputs of the full-adders to modify the denominator of the division ratio. By doing this, K additional or fewer counts are accumulated during each cycle. Thus, the denominator can be changed from 2.sup.N to 2.sup.N +K, where K can be either positive or negative to obtain the desired M/(2.sup.N +K) ratio.

REFERENCES:
patent: 4965531 (1990-10-01), Riley
patent: 5088057 (1992-02-01), Amrany et al.

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