Patent ID: 6614322
Filing Date: 2003-09-02
Classification: H03B

Abstract:
A voltage controlled oscillator, comprising:a transistor having a first terminal, a second terminal, and a control terminal; a frequency variable resonant circuit with an input terminal for a tuning voltage, said resonant circuit connecting said first terminal of said transistor to a reference potential terminal; a series circuit including a first inductive element and a second inductive element connecting said second terminal of said transistor to said reference potential terminal; and a first circuit node located between said first and said second inductive elements; a second circuit node located between a first capacitive element and a second capacitive element; a frequency dependent feedback path connecting said first circuit node to said control terminal of said transistor, said feedback path including a series circuit of said first capacitive element and said second capacitive element and a resistor for connecting said first circuit node to said reference potential terminal, said feedback path including a third inductive element connecting said second circuit node to said control terminal of said transistor.