A Novel Dual-Mode Dielectric Resonator Filter Based on Half-Mode Resonance

This paper presents a novel dual-mode dielectric resonator filter with simple structure and wide suppression based on half-mode resonator. The filter is mainly composed of a rectangular metal cavity with a coupling window and two dielectric resonators. The dielectric resonators are on the bottom of...

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Bibliographic Details
Main Authors: Zhao, Bingxiong, Wong, Sai-Wai, Wang, Diji
Format: Conference Proceeding
Language:English
Subjects:
Analytical models
bandpass filter
Couplings
Dielectric filter
Dielectrics
dual-mode resonator
half-mode
Metals
Probes
Resonator filters
Wireless communication
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Summary:This paper presents a novel dual-mode dielectric resonator filter with simple structure and wide suppression based on half-mode resonator. The filter is mainly composed of a rectangular metal cavity with a coupling window and two dielectric resonators. The dielectric resonators are on the bottom of the cavity and excited by a probe placed on the top of the dielectric block. Since the dielectric resonator is short-circuited at its bottom, it is equivalent to using the half-mode resonance of the dielectric resonator to design the filter. The dual-mode characteristics is realized by properly placing the feeding probe. The window is used for the coupling between the two dielectric resonators. In order to verify the design concept, a four-order filter based on the dual-mode dielectric resonator is designed. The final simulation shows that the proposed filter has high selectivity and wide suppression.
ISSN:2377-8512
DOI:10.1109/CSRSWTC52801.2021.9631595