Wideband oscillation circuit
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United States of America Patent
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Aug 21, 2012
Grant Date -
Aug 4, 2011
app pub date -
Feb 1, 2011
filing date -
Feb 2, 2010
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A wideband oscillation circuit outputting oscillation signals (divided signals) of continuous frequencies is disclosed and the wideband oscillation circuit includes an oscillator that outputs an oscillation signal, a filter that filters the oscillation signal output from the oscillator and outputs an injection locked signal, and an injection locked frequency divider that performs a free-run operation and outputs a divided signal of the oscillation signal while its oscillating operation is regulated by the injection locked signal, the division ratio of which varies in accordance with a control signal, wherein the filter generates the injection locked signal by controlling the passing characteristic that caused the oscillation signal to pass with respect to time in accordance with a filter control signal locked with the divided signal.
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