Voltage-controlled oscillating circuit
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United States of America Patent
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Mar 26, 1996
Grant Date -
N/A
app pub date -
Jan 30, 1995
filing date -
Apr 7, 1994
priority date (Note) -
Expired
status (Latency Note)
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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.
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