Patent ID: 6580331
Filing Date: 2003-06-17
Classification: H03B

Abstract:
A voltage controlled oscillator comprising:a capacitor coupled to a ground; an oscillating transistor comprising a base and a collector, the collector being coupled to the capacitor; a microstrip having a first end and a second end; a first varactor diode coupled to the base of the oscillating transistor; a cathode of the first varactor diode coupled to the first end of the microstrip; and a second varactor diode coupled to the second end of the microstrip; wherein the length of the microstrip is about Â½ to Â¾ of a wave length of an oscillation frequency of an output of the oscillating transistor and one end of a first inductor is coupled to the second end of the microstrip and a control voltage is applied to the second end of the microstrip.