Dual-Narrowband/Wideband Filters Using Modified Coaxial Cavities With Large Frequency Ratios
This article presents two types of dual-narrowband/ wideband filters using modified coaxial cavities with large frequency ratios. The dual-narrowband/ wideband filters mean two dual-band bandpass filters, one of which is a dual-band wideband filter, and the other is a dual-band...
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Journal of Microwaves |
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| Online Access: | https://ieeexplore.ieee.org/document/9893162/ |
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| author | Zhi-Chong Zhang Hong-Ji Li Xu-Zhou Yu Yejun He Sai-Wai Wong |
| author_facet | Zhi-Chong Zhang Hong-Ji Li Xu-Zhou Yu Yejun He Sai-Wai Wong |
| author_sort | Zhi-Chong Zhang |
| collection | DOAJ |
| description | This article presents two types of dual-narrowband/ wideband filters using modified coaxial cavities with large frequency ratios. The dual-narrowband/ wideband filters mean two dual-band bandpass filters, one of which is a dual-band wideband filter, and the other is a dual-band narrowband filter. The proposed coaxial resonator in the dual-narrowband filter consists of a pair of disk-loaded coaxial stepped impedance resonator (DLCSIR), which provides a large frequency ratio. The frequency ratio of the first two resonant modes of the DLCSIR can be precisely controlled by adjusting the impedance ratios and dimensions of the loading disk. By contrast, the proposed coaxial resonator in the dual-wideband filter is a rectangular coaxial stepped impedance resonator (RCSIR), which has the merits of miniaturized size, large frequency ratio, and convenience for strong coupling. Finally, two second-order dual-narrowband/ wideband filters with large frequency ratios were designed, fabricated, and measured. The exhibited dual-passband performance of the two filters verifies the proposed concept. |
| format | Article |
| id | doaj-art-5c6b65d05f6441bc89adbfbfad674c67 |
| institution | OA Journals |
| issn | 2692-8388 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of Microwaves |
| spelling | doaj-art-5c6b65d05f6441bc89adbfbfad674c672025-08-20T02:17:28ZengIEEEIEEE Journal of Microwaves2692-83882022-01-012469069810.1109/JMW.2022.32021629893162Dual-Narrowband/Wideband Filters Using Modified Coaxial Cavities With Large Frequency RatiosZhi-Chong Zhang0https://orcid.org/0000-0003-0299-7214Hong-Ji Li1Xu-Zhou Yu2https://orcid.org/0000-0003-0864-3011Yejun He3https://orcid.org/0000-0002-8564-5355Sai-Wai Wong4https://orcid.org/0000-0001-5363-1576College of Electronic and Information Engineering, Jinggangshan University, Ji'an, ChinaCollege of Information Engineering, Shenzhen University, Shenzhen, ChinaCollege of Information Engineering, Shenzhen University, Shenzhen, ChinaCollege of Information Engineering, Shenzhen University, Shenzhen, ChinaCollege of Information Engineering, Shenzhen University, Shenzhen, ChinaThis article presents two types of dual-narrowband/ wideband filters using modified coaxial cavities with large frequency ratios. The dual-narrowband/ wideband filters mean two dual-band bandpass filters, one of which is a dual-band wideband filter, and the other is a dual-band narrowband filter. The proposed coaxial resonator in the dual-narrowband filter consists of a pair of disk-loaded coaxial stepped impedance resonator (DLCSIR), which provides a large frequency ratio. The frequency ratio of the first two resonant modes of the DLCSIR can be precisely controlled by adjusting the impedance ratios and dimensions of the loading disk. By contrast, the proposed coaxial resonator in the dual-wideband filter is a rectangular coaxial stepped impedance resonator (RCSIR), which has the merits of miniaturized size, large frequency ratio, and convenience for strong coupling. Finally, two second-order dual-narrowband/ wideband filters with large frequency ratios were designed, fabricated, and measured. The exhibited dual-passband performance of the two filters verifies the proposed concept.https://ieeexplore.ieee.org/document/9893162/Dual-band filterlarge frequency ratiodisk loaded coaxial stepped impedance resonator (DLCSIR)rectangular coaxial stepped impedance resonator (RCSIR) |
| spellingShingle | Zhi-Chong Zhang Hong-Ji Li Xu-Zhou Yu Yejun He Sai-Wai Wong Dual-Narrowband/Wideband Filters Using Modified Coaxial Cavities With Large Frequency Ratios IEEE Journal of Microwaves Dual-band filter large frequency ratio disk loaded coaxial stepped impedance resonator (DLCSIR) rectangular coaxial stepped impedance resonator (RCSIR) |
| title | Dual-Narrowband/Wideband Filters Using Modified Coaxial Cavities With Large Frequency Ratios |
| title_full | Dual-Narrowband/Wideband Filters Using Modified Coaxial Cavities With Large Frequency Ratios |
| title_fullStr | Dual-Narrowband/Wideband Filters Using Modified Coaxial Cavities With Large Frequency Ratios |
| title_full_unstemmed | Dual-Narrowband/Wideband Filters Using Modified Coaxial Cavities With Large Frequency Ratios |
| title_short | Dual-Narrowband/Wideband Filters Using Modified Coaxial Cavities With Large Frequency Ratios |
| title_sort | dual narrowband x002f wideband filters using modified coaxial cavities with large frequency ratios |
| topic | Dual-band filter large frequency ratio disk loaded coaxial stepped impedance resonator (DLCSIR) rectangular coaxial stepped impedance resonator (RCSIR) |
| url | https://ieeexplore.ieee.org/document/9893162/ |
| work_keys_str_mv | AT zhichongzhang dualnarrowbandx002fwidebandfiltersusingmodifiedcoaxialcavitieswithlargefrequencyratios AT hongjili dualnarrowbandx002fwidebandfiltersusingmodifiedcoaxialcavitieswithlargefrequencyratios AT xuzhouyu dualnarrowbandx002fwidebandfiltersusingmodifiedcoaxialcavitieswithlargefrequencyratios AT yejunhe dualnarrowbandx002fwidebandfiltersusingmodifiedcoaxialcavitieswithlargefrequencyratios AT saiwaiwong dualnarrowbandx002fwidebandfiltersusingmodifiedcoaxialcavitieswithlargefrequencyratios |