Patent ID: 6606008
Filing Date: 2003-08-12
Classification: H03B

Abstract:
An oscillator circuit, comprising:an oscillator core having at least one inductance, a first capacitance connected to said inductance, and a second capacitance connected to said first capacitance, said first capacitance and said second capacitance having capacitance values adjustable by a control voltage; a reference-ground potential terminal; and a deattenuation amplifier coupled to said oscillator core and having a first transistor and a second transistor cross-coupled to said first transistor in a non-direct-electrical coupling manner, said first transistor and said second transistor each having a first load terminal directly connected to said reference-ground potential terminal, a second load terminal, and a control terminal; said at least one inductance including a first transformer inductively coupling said second load terminal of said first transistor to said control terminal of said second transistor, and a second transformer inductively coupling said second load terminal of said second transistor to said control terminal of said first transistor.