Miniaturized Microwave Filter Using Circular Spiral Resonators in a Single Metal Cavity

Chen, RS; Wong, SW; Lin, JY; He, Y

Miniaturized Microwave Filter Using Circular Spiral Resonators in a Single Metal Cavity

Chen, RS Wong, SW Lin, JY He, Y

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Publication Type:: Conference Proceeding
Citation:: IEEE MTT-S International Microwave Symposium Digest, 2019, 2019-June, pp. 1347-1350
Issue Date:: 2019-06-01

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Field	Value	Language
dc.contributor.author	Chen, RS
dc.contributor.author	Wong, SW
dc.contributor.author	Lin, JY
dc.contributor.author	He, Y
dc.date.accessioned	2020-06-17T07:17:59Z
dc.date.available	2020-06-17T07:17:59Z
dc.date.issued	2019-06-01
dc.identifier.citation	IEEE MTT-S International Microwave Symposium Digest, 2019, 2019-June, pp. 1347-1350
dc.identifier.isbn	9781728113098
dc.identifier.issn	0149-645X
dc.identifier.uri	http://hdl.handle.net/10453/141484
dc.description.abstract	© 2019 IEEE. This paper proposes a novel miniaturized microwave filter based on circular spiral resonators (CSRs) embedded in a single metal cavity. The spiral structure is used to design filters in planar circuits with compact size, but not applied in cavity filters. The proposed CSR is firstly presented and analyzed, which has obvious size reduction compared to traditional cavity resonators, and still remain high filtering performance. Then, a second order filter using two CSRs sharing a metal cavity is designed, and it has two transmission zeroes (TZs) produced by the source-load coupling without additional coupling structure, which can improve the nearby stopband-rejection. The circuit size is 0.049λ0∗0.026λ0∗0.047λ0. Finally, the proposed second order filter is fabricated and measured, the measured results are in good agreement with the simulated results.
dc.language	en
dc.relation.ispartof	IEEE MTT-S International Microwave Symposium Digest
dc.rights	info:eu-repo/semantics/restrictedAccess
dc.title	Miniaturized Microwave Filter Using Circular Spiral Resonators in a Single Metal Cavity
dc.type	Conference Proceeding
utslib.citation.volume	2019-June
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
dc.date.updated	2020-06-17T07:17:53Z
pubs.publication-status	Published
pubs.volume	2019-June

Abstract:

© 2019 IEEE. This paper proposes a novel miniaturized microwave filter based on circular spiral resonators (CSRs) embedded in a single metal cavity. The spiral structure is used to design filters in planar circuits with compact size, but not applied in cavity filters. The proposed CSR is firstly presented and analyzed, which has obvious size reduction compared to traditional cavity resonators, and still remain high filtering performance. Then, a second order filter using two CSRs sharing a metal cavity is designed, and it has two transmission zeroes (TZs) produced by the source-load coupling without additional coupling structure, which can improve the nearby stopband-rejection. The circuit size is 0.049λ0∗0.026λ0∗0.047λ0. Finally, the proposed second order filter is fabricated and measured, the measured results are in good agreement with the simulated results.

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http://hdl.handle.net/10453/141484