Method for adjusting characteristics of voltage control type oscillator

摘要

A method for adjusting a voltage control type oscillator (10) that can prevent characteristic changes occurring after adjustments and permits the oscillator (10) to be produced at a low cost. The voltage control type oscillator (10) includes a strip electrode (14) formed on a first surface of a dielectric substrate (12) and a ground electrode (16) formed on a second surface of the dielectric substrate (12). These electrodes constitute a microstrip line resonator. Besides the resonator, electric components (18) are mounted on the first surface of the dielectric substrate (12). A case (20) is attached to the dielectric substrate (12) in a manner that the case (20) covers the strip electrode (14) and the electronic components (18). After attaching the case (20), the strip electrode (14) is trimmed by irradiating a laser beam from the second surface side of the dielectric substrate (12).