Patent ID: 7005932
Filing Date: 2006-02-28
Classification: H03B,H05K

Abstract:
1. A phase noise fine tuning electronic device comprising: a plurality of circuit units of a voltage control oscillator, wherein the voltage control oscillator includes a resonance circuit, a coupling circuit, and an oscillating circuit; a first conductive layer for placing the plurality of circuit units, wherein a plurality of micro-strips of the conductive layer are patterned for connecting the plurality of circuit units; a second conductive layer; and a first insulation layer placed between the first conductive layer and the second conductive layer, the first insulation layer having a first opening filled with conductive material, wherein a first lower micro-strip patterned in the second conductive layer, a first upper micro-strip patterned in the first conductive layer and the insulation layer together form an adjustable capacitor of the coupling circuit, whereby phase noise of the voltage control oscillator is diminished by cutting the first upper micro-strip to change capacitance of the adjustable capacitor.