Array oscillator and polyphase clock generator
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United States of America Patent
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Issued Date -
Jan 5, 2006
app pub date -
Jul 2, 2004
filing date -
Jul 2, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates generally to array oscillator circuits for use as phase delay generators. More particularly, the present invention relates to a novel array oscillator for providing a plurality of phases which have stable phase relationships. The present invention is particularly applicable to the generation of poly-phase clocks for receivers of very high speed interfaces which employ an over-sampling technique, or multiplexing, and for high speed logic. The array oscillator according to the invention comprises at least one ring oscillator having a plurality of at least two interconnected buffer stages including at least one, or any integer odd number of inverting stages and a series of non-inverting stages, wherein the buffer stages are formed of N-type MOSFET transistors.
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