Digital frequency multiplier

Details Digital frequency multiplier Digital frequency multiplier

1985-10-15

1987-05-26

Heyman, John S.

Electrical pulse counters, pulse dividers, or shift registers: c

Systems

Pulse multiplication or division

307265, 307271, 364703, 328 20, H03B 1900

Patent

active

046690999

ABSTRACT:
A square wave with a 50% duty cycle which has frequency twice that of an input square wave also having a 50% duty cycle is obtained by generating from the incoming square wave two waveforms having 75% duty cycles with the two waveforms 180.degree. out of phase with each other. The two waveforms are combined in an ANDing operation to obtain an output waveform which is a square wave with twice the frequency of the incoming square wave. In similar fashion, using additional similar circuits and gating, tripling is possible.

REFERENCES:
patent: 4077010 (1978-02-01), Ryon
patent: 4563741 (1986-01-01), Matsumura
RCA Technical Notes No. 736, Jan., 1968 "Digital Multiplier" by Merson.

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