Frequency synthesizer

Details Frequency synthesizer Frequency synthesizer

1975-09-05

1976-08-24

Heyman, John S.

328 48, 328155, H03B 1900

Patent

active

039769453

ABSTRACT:
A frequency synthesizer employs a reference oscillator, a cycle swallower, a modulo-N counter, a programmable delay generator, and an accumulator to generate pulses at a precise, selected frequency which is any rational fraction of the reference oscillator frequency. The period between pulses is kept constant by use of the programmable delay generator to substantially reduce cycle-to-cycle phase variations, and to thus assure an output signal of the selected frequency that has high spectral purity.

REFERENCES:
patent: 3464018 (1969-08-01), Cliff
patent: 3689914 (1972-09-01), Butler
patent: 3882403 (1975-05-01), Gerken

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