Patent ID: 7211933
Filing Date: 2007-05-01
Classification: H03B,H03H,Y10T

Abstract:
1. A voltage controlled oscillator, comprising a thin film BAW resonator and a variable capacitor element, the thin film BAW resonator including: a first substrate section; a first support section formed on the first substrate section; a lower electrode supported on the first support section and arranged to face the first substrate section; a first piezoelectric film formed on the lower electrode; and an upper electrode formed on the first piezoelectric film; and the variable capacitor element including: a second substrate section; a stationary electrode formed on the second substrate section; a second support section formed on the second substrate section; an actuator including a first electrode supported on the second support section, a second piezoelectric film formed on the first electrode, and a second electrode formed on the second piezoelectric film; and p