Resonant Characteristics of Triple-Mode Dielectric Resonators

Myung, Jae-Yoon; Yun, Sang-Won; Park, Namshin; Lee, Donyong; Kim, Byungchul; Won, Jeonghee; Na, Inho; Jang, Geonho; Wang, Xu-Guang

doi:2014.14.1.9

J. Electromagn. Eng. Sci > Volume 14(1); 2014 > Article

Journal of Electromagnetic Engineering and Science 2014;14(1):9-14.
DOI: https://doi.org/10.5515/JKIEES.2014.14.1.9

Resonant Characteristics of Triple-Mode Dielectric Resonators

Jae-Yoon Myung¹, Sang-Won Yun¹, Namshin Park², Donyong Lee², Byungchul Kim², Jeonghee Won², Inho Na², Geonho Jang², Xu-Guang Wang²

¹Department of Electronic Engineering, Sogang University
²KMW Inc.

Abstract

This paper discusses the resonant characteristics, such as the resonant frequencies and Q factors, as well as tuning methods of the resonant frequency of the triple-mode dielectric resonators, for their possible application to compact bandpass filters for mobile communication systems. The resonators include spheres and cylindrical rods that can be applied to compact bandpass filters. These high Q ceramic resonators can replace the conventional coaxial type resonators, which are large sized and also have relatively low Q values. Both simulated and measured results show that the Q values of the sphere and rod reach 27,000 and 24,000, respectively. Decoupling of degenerate modes is also briefly discussed.

Key words: Dielectric Resonator, Dielectric Rod, Dielectric Sphere, High Q, Triple-Mode