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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

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