Voltage control oscillator capable of adjusting a frequency and method thereof
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United States of America Patent
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Issued Date -
Jul 1, 2004
app pub date -
Dec 15, 2003
filing date -
Dec 31, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A voltage control oscillating apparatus capable of automatically adjusting a oscillating frequency, comprising: a plurality of serial-coupled voltage control delay lines (VCDL) for outputting a plurality of oscillating signals respectively according to a voltage control signal, each of the oscillating signals is corresponding to a oscillating frequency; a multiplexer coupled to the VCDL for selecting one of the oscillating signals to be an output oscillating signal according to a control signal; a frequency detector coupled to the multiplexer for outputting a detecting signal according to the output oscillating signal; and a controller coupled to the frequency detector for outputting the control signal to the multiplexer according to the detecting signal.
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