Patent Number: 8,797,108

Title: Voltage control oscillator and quadrature modulator

Abstract: A voltage control oscillator includes: 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; and a second capacitor.

Inventors: Hirashiki; Kenichi (Yokohama, JP), Ishizuka; Shinichiro (Yokohama, JP), Itoh; Nobuyuki (Bunkyo-ku, JP)

Assignee: Kabushiki Kaisha Toshiba

International Classification: H03B 27/00 (20060101); H03B 5/12 (20060101)

Expiration Date: 8/05/12018