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Triple-Passband Cavity Filters with High Selectivity under Operation of Triple Modes
Zai-Cheng Guo1; Sai-Wai Wong2; Lei Zhu1
2018-09-24
Source PublicationIEEE Transactions on Components, Packaging and Manufacturing Technology
ISSN2156-3950
Abstract

A triple-passband filter is proposed by exploiting the first three resonant modes in a single rectangular cavity: TE101, TE011 and TM110 modes. Triple-passband frequency response is realized by generating one transmission zero (TZ) between any of two adjacent modes so that each mode contributes one passband. Beside TZs between modes, the three resonant modes are excited by properly placing two coupling apertures at input/outputs ports of the cavity. When cascading two single cavities, three pairs of slots are used to independently control the coupling between two respective modes of different cavities. As a result, not only two TZs between different passbands, and but a pair of additional TZs below the first passband and above the third passband could be realized, respectively, thereby attaining a high selectivity of triple- passband filter. In final, a dual-cavity filter with triple- passband and four out-of-band TZs is fabricated and tested. The measured results have verified the validity of the proposed design well.

KeywordRectangular Cavity Transmission Zeros Triple-passband Bandpass Filter (Bpf) Selectivity
DOIhttps://doi.org/10.1109/TCPMT.2018.2869854
Indexed BySCI
Language英语
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Document TypeJournal article
CollectionFaculty of Science and Technology
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorLei Zhu
Affiliation1.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, China
2.College of Information Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060, PRC
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Zai-Cheng Guo,Sai-Wai Wong,Lei Zhu. Triple-Passband Cavity Filters with High Selectivity under Operation of Triple Modes[J]. IEEE Transactions on Components, Packaging and Manufacturing Technology,2018.
APA Zai-Cheng Guo,Sai-Wai Wong,&Lei Zhu.(2018).Triple-Passband Cavity Filters with High Selectivity under Operation of Triple Modes.IEEE Transactions on Components, Packaging and Manufacturing Technology.
MLA Zai-Cheng Guo,et al."Triple-Passband Cavity Filters with High Selectivity under Operation of Triple Modes".IEEE Transactions on Components, Packaging and Manufacturing Technology (2018).
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