NOISE FILTER
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United States of America Patent
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N/A
Issued Date -
Dec 18, 2008
app pub date -
Apr 30, 2008
filing date -
Jun 13, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A noise filter connected to an LC oscillator is provided. The noise filter comprises a transmission line, a DC bias circuit, and a capacitor. The transmission line is connected to the LC oscillator. The DC bias circuit is connected to the transmission line and provides a bias current. The capacitor has one end connected between the transmission line and the DC bias circuit and the other end AC grounded and provides a path to AC ground to the transmission line. A length of the transmission line is odd times that of a quarter-wavelength of a secondary harmonic wave of the LC oscillator.
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