1A1-X04 Research of Tunable Superconducting Filter with Dielectric Drive Mechanism using Piezoelectric-Element Displacement Magnifying Mechanism

Abstract

We propose a new tunable mechanism of a superconducting filter. The basic operation of the tunable method is realized by changing the gap length of the dielectric rod on the maximum electric field point at the edges of the resonator pattern. Thus, this tunable mechanism is composed of a substrate of High-Tc superconducting filter, piezoelectric actuators using piezoelectric element displacement magnifying mechanism, dielectric rods of sapphire in the vacuum chamber. The tuning range is 2.17MHz at 1GHz band with a maximum dielectric displacement of 101μm.