METHOD OF ADJUSTING CAPACITY OF VARACTOR, METHOD OF ADJUSTING RESONANCE FREQUENCY OF RESONANCE CIRCUIT, AND METHOD OF ADJUSTING BAND OF FILTER

摘要

PROBLEM TO BE SOLVED: To provide a method of adjusting the capacity of a varactor with improved waveform distortion and cross-modulation distortion, a method of adjusting the resonance frequency of a resonance circuit, and a method of adjusting the band of a filter. SOLUTION: The varactor comprising, on a base substrate, a 1st capacity electrode, a 2nd capacity electrode, and a thin-film dielectric layer with dielectric constant varied depending on a voltage, is characterised in that a bias voltage and a control voltage are superposed one over the other to be applied to the 1st capacity electrode. COPYRIGHT: (C)2004,JPO&NCIPI