Wide frequency range agile voltage controlled oscillator
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United States of America Patent
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Aug 29, 2006
Grant Date -
Feb 16, 2006
app pub date -
Aug 16, 2004
filing date -
Aug 16, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A voltage controlled oscillator that can rapidly change frequencies over a wide range is disclosed. The voltage controlled oscillator has a transistor having a base, an emitter and a collector. An output port and a power supply port are connected to the collector. A high pass filter is connected between ground and the base of the transistor. A tuning element is connected between the high pass filter and ground. The tuning element includes a pair of varactor diodes. The varactor diodes have their cathodes connected together at a first node. A series combination of a resistor and inductor are connected between a tuning port and the first node. A capacitor is connected between the first node and the emitter.
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