Multi-Mode Bandpass Cavity Filters and Duplexer With Slot Mixed-Coupling Structure

Zheng, BL; Wong, SW; Feng, SF; Zhu, L; Yang, Y

Multi-Mode Bandpass Cavity Filters and Duplexer With Slot Mixed-Coupling Structure

Zheng, BL Wong, SW Feng, SF Zhu, L Yang, Y

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Publication Type:: Journal Article
Citation:: IEEE Access, 2018, 6 pp. 16353 - 16362
Issue Date:: 2018-01-01

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Field	Value	Language
dc.contributor.author	Zheng, BL	en_US
dc.contributor.author	Wong, SW	en_US
dc.contributor.author	Feng, SF	en_US
dc.contributor.author	Zhu, L	en_US
dc.contributor.author	Yang, Y https://orcid.org/0000-0001-7439-2156	en_US
dc.date.issued	2018-01-01	en_US
dc.identifier.citation	IEEE Access, 2018, 6 pp. 16353 - 16362	en_US
dc.identifier.uri	http://hdl.handle.net/10453/123992
dc.description.abstract	© 2018 IEEE. The quasi-elliptic multi-mode bandpass cavity filters and duplexer with slot mixed-coupling structure are proposed in this paper. A single metal cavity embedded with a rectangular-shaped slot-cut metal plate is utilized to constitute a multi-mode bandpass filter with a few features including wide passband, low profile and controllable transmission zeros (TZs). In this paper, the slot-cut metal plane serves as the multi-mode resonators. In detail, the slot on the metal plane functions as the circuit element to move the higher order modes within the reasonable frequency-band, while serving as a mixed-coupling structure to generate out-of-band transmission zeros. To demonstrate the multiple-mode capability in filter design, the dual-mode, triple-mode, and quadruple-mode filters are developed by appropriately allocating a few TZs in the upper stopbands using the proposed slot mixed-coupling approach, namely, Type-I filters. Next, a quadruple-mode cavity filter with both lower and higher TZs is designed, namely, Type-II filter, which is further applied for the exploration of a duplexer. Finally, the filter and duplexer prototypes are fabricated and measured. The measurement results are found in good agreement with the simulated ones.	en_US
dc.relation.ispartof	IEEE Access	en_US
dc.relation.isbasedon	10.1109/ACCESS.2017.2766293	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.title	Multi-Mode Bandpass Cavity Filters and Duplexer With Slot Mixed-Coupling Structure	en_US
dc.type	Journal Article
utslib.citation.volume	6	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	08 Information and Computing Sciences	en_US
utslib.for	09 Engineering	en_US
utslib.for	10 Technology	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	open_access	*
pubs.publication-status	Published	en_US
pubs.volume	6	en_US

Abstract:

© 2018 IEEE. The quasi-elliptic multi-mode bandpass cavity filters and duplexer with slot mixed-coupling structure are proposed in this paper. A single metal cavity embedded with a rectangular-shaped slot-cut metal plate is utilized to constitute a multi-mode bandpass filter with a few features including wide passband, low profile and controllable transmission zeros (TZs). In this paper, the slot-cut metal plane serves as the multi-mode resonators. In detail, the slot on the metal plane functions as the circuit element to move the higher order modes within the reasonable frequency-band, while serving as a mixed-coupling structure to generate out-of-band transmission zeros. To demonstrate the multiple-mode capability in filter design, the dual-mode, triple-mode, and quadruple-mode filters are developed by appropriately allocating a few TZs in the upper stopbands using the proposed slot mixed-coupling approach, namely, Type-I filters. Next, a quadruple-mode cavity filter with both lower and higher TZs is designed, namely, Type-II filter, which is further applied for the exploration of a duplexer. Finally, the filter and duplexer prototypes are fabricated and measured. The measurement results are found in good agreement with the simulated ones.

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http://hdl.handle.net/10453/123992