Voltage-controlled oscillating circuit

Details Voltage-controlled oscillating circuit Voltage-controlled oscillating circuit

1995-01-30

1996-03-26

Mis, David

Oscillators

Ring oscillators

331 34, 331 45, 331 74, 331177R, 327152, H03B 524, H03K 3353, H03L 7099

Patent

active

055024181

ABSTRACT:
The present invention provides a voltage controlled oscillating circuit comprising a multi-staged phase inversion circuit composed of 4 or more even-number stages of phase inversion devices connected in series; and a switch circuit having a delay time characteristic similar to that of said phase inversion circuit, wherein the switch circuit satisfies oscillation conditions by converting an output phase of the even-numbered inverters connected in series into a phase that is the same as those of the outputs of odd-numbered inverters connected in series; thereby obtaining timing signals having a period equal to 1/N of the oscillation period.

REFERENCES:
patent: 3708757 (1973-01-01), Savarese et al.
patent: 4617529 (1986-10-01), Suzuki
patent: 4804929 (1989-02-01), Kato et al.

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