Patent ID: 8797108
Filing Date: 2014-08-05
Classification: H03B

Abstract:
1. A voltage control oscillator comprising: first and second field effect transistors, a drain of one of which is connected to a gate of the other and a drain of the other of which is connected to a gate of the one; third and fourth field effect transistors, a drain of one of which is connected to a gate of the other and a drain of the other of which is connected to a gate of the one; a first inductor connected between the drain of the first field effect transistor and the drain of the second field effect transistor; a second inductor connected between the drain of the third field effect transistor and the drain of the fourth field effect transistor; a third inductor magnetically coupled to the first inductor; a fourth inductor magnetically coupled to the second inductor; a first capacitor that capacitively couples one end of the third inductor and one end of the fourth inductor; and a second capacitor that capacitively couples the other end of the third inductor and the other end of the fourth inductor; wherein a first wire forms the first inductor and is formed in a loop shape; a second wire forms the second inductor and is formed in a loop shape in parallel to the first wire; first and second gaps respectively separate the first and second wires; third and fourth wires respectively form the third inductor and the fourth inductor and are formed in a loop shape to respectively overlap the first and second wires; and third and fourth gaps respectively form the first capacitor and the second capacitor and separate the third and fourth wires.