Divider with dual modulus prescaler for phase locked loop freque

Details Divider with dual modulus prescaler for phase locked loop freque Divider with dual modulus prescaler for phase locked loop freque

1980-02-13

1982-04-13

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

328 14, 328 42, 328 46, 328 48, 331 16, 331 25, H03K 2136, H03L 718

Patent

active

043250319

ABSTRACT:
A high frequency divider suitable for use in a frequency synthesizer using a dual modulus prescaler and two counters to achieve high speed and low current drain. The input signal is alternately divided by one of the two moduli in the prescaler and then alternately divided by one of the two counters. Each of the two counters is reset while the other is counting thereby reducing circuit complexity and increasing circuit speed.

REFERENCES:
patent: 3805192 (1974-04-01), Ocnaschek et al.
patent: 3811092 (1974-05-01), Charbonnier
patent: 3849635 (1974-11-01), Freedman
patent: 3959737 (1976-05-01), Tanis
patent: 3976946 (1976-08-01), Schroder
patent: 4033633 (1977-07-01), Miller et al.
patent: 4053739 (1977-10-01), Miller et al.
patent: 4121162 (1978-10-01), Alberkrack et al.
patent: 4184068 (1980-01-01), Washburn

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