OSCILLATION DEVICE AND COMMUNICATION SYSTEM
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United States of America Patent
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Issued Date -
Nov 27, 2014
app pub date -
May 19, 2014
filing date -
May 21, 2013
priority date (Note) -
Abandoned
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Abstract
An oscillation device includes a voltage control oscillation unit, a dividing unit, an output phase comparison unit, and a control voltage supply unit. The voltage control oscillation unit is configured to oscillate an oscillation frequency signal with a frequency f1 according to a control voltage. The dividing unit is configured to divide the frequency of the oscillation frequency signal into 1/N (N is a natural number) to match with a frequency f2 of a reference frequency signal input from outside. The output phase comparison unit is configured to compare a phase of the divided oscillation frequency signal with a phase of the reference frequency signal and output a signal according to a phase difference. The control voltage supply unit is configured to generate a control voltage according to the signal according to the phase difference and supply the control voltage to the voltage control oscillation unit.
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