A new class of compact dual-mode dielectric resonator filters

Abstract

This paper presents a new cross-shaped TM010 dual-mode dielectric resonator which provides 28.8% and 78% volume reduction in comparison with two single-mode TM and one dual-mode TE dielectric resonator, respectively. Based on a design method which is improved to avoid the tuning efforts, three filters are designed. A comparison between simulation and measurement results verifies practically the concept of dual-mode operation and its application for filter design.