Tunable Bandstop HMSIW Filter With Flexible Center Frequency and Bandwidth Using Liquid Crystal
This paper reports on a tunable bandstop filter (BSF) with both flexible center frequency and bandwidth. The tunable BSF is based on half-mode substrate integrated waveguide (HMSIW), of which the broadside is coupled with reconfigurable resonators. Using liquid crystal (LC) material as the substrate...
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| Format: | Article |
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IEEE
2019-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/8890802/ |
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| author | Wentao Xu Yiming Zhang Yeshun Peng Jianying Wang Liwei Mu Baoxian Yu Han Zhang |
| author_facet | Wentao Xu Yiming Zhang Yeshun Peng Jianying Wang Liwei Mu Baoxian Yu Han Zhang |
| author_sort | Wentao Xu |
| collection | DOAJ |
| description | This paper reports on a tunable bandstop filter (BSF) with both flexible center frequency and bandwidth. The tunable BSF is based on half-mode substrate integrated waveguide (HMSIW), of which the broadside is coupled with reconfigurable resonators. Using liquid crystal (LC) material as the substrate, a tunable stopband could be obtained by adjusting the bias voltage of the interdigitated microstrip resonator on LC. In order to increase the tunable range of stopband bandwidth, two additional open resonators are implemented at the broadside of HMSIW cavity. For practical validation, the bandstop HMSIW filter using LC is designed and fabricated. Numerical results demonstrate that,by adjusting the voltages of three resonators on LC, either the lower or the higher cutoff frequency could be controlled independently, leading to the flexible and independent tuning ranges of both center frequency from 4.9 to 5.4 GHz and 3-dB bandwidth of stopband from 1.2 to 1.8 GHz (@5.1 GHz). |
| format | Article |
| id | doaj-art-57ff3a7a5f354d5398758fb99fbc5f52 |
| institution | OA Journals |
| issn | 2169-3536 |
| language | English |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj-art-57ff3a7a5f354d5398758fb99fbc5f522025-08-20T02:33:48ZengIEEEIEEE Access2169-35362019-01-01716130816131710.1109/ACCESS.2019.29515438890802Tunable Bandstop HMSIW Filter With Flexible Center Frequency and Bandwidth Using Liquid CrystalWentao Xu0https://orcid.org/0000-0002-1987-3309Yiming Zhang1https://orcid.org/0000-0002-6428-2495Yeshun Peng2https://orcid.org/0000-0003-0689-0617Jianying Wang3https://orcid.org/0000-0003-0223-1382Liwei Mu4https://orcid.org/0000-0002-5470-1799Baoxian Yu5https://orcid.org/0000-0002-8068-3766Han Zhang6https://orcid.org/0000-0002-4037-3026School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, ChinaCentre for Optical and Electromagnetic Research, South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou, ChinaSchool of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, ChinaSchool of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, ChinaSchool of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, ChinaSchool of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, ChinaSchool of Physics and Telecommunication Engineering, South China Normal University, Guangzhou, ChinaThis paper reports on a tunable bandstop filter (BSF) with both flexible center frequency and bandwidth. The tunable BSF is based on half-mode substrate integrated waveguide (HMSIW), of which the broadside is coupled with reconfigurable resonators. Using liquid crystal (LC) material as the substrate, a tunable stopband could be obtained by adjusting the bias voltage of the interdigitated microstrip resonator on LC. In order to increase the tunable range of stopband bandwidth, two additional open resonators are implemented at the broadside of HMSIW cavity. For practical validation, the bandstop HMSIW filter using LC is designed and fabricated. Numerical results demonstrate that,by adjusting the voltages of three resonators on LC, either the lower or the higher cutoff frequency could be controlled independently, leading to the flexible and independent tuning ranges of both center frequency from 4.9 to 5.4 GHz and 3-dB bandwidth of stopband from 1.2 to 1.8 GHz (@5.1 GHz).https://ieeexplore.ieee.org/document/8890802/Bandstop filter (BSF)half-mode substrate integrated waveguide (HMSIW)liquid crystal (LC)tunable filter |
| spellingShingle | Wentao Xu Yiming Zhang Yeshun Peng Jianying Wang Liwei Mu Baoxian Yu Han Zhang Tunable Bandstop HMSIW Filter With Flexible Center Frequency and Bandwidth Using Liquid Crystal IEEE Access Bandstop filter (BSF) half-mode substrate integrated waveguide (HMSIW) liquid crystal (LC) tunable filter |
| title | Tunable Bandstop HMSIW Filter With Flexible Center Frequency and Bandwidth Using Liquid Crystal |
| title_full | Tunable Bandstop HMSIW Filter With Flexible Center Frequency and Bandwidth Using Liquid Crystal |
| title_fullStr | Tunable Bandstop HMSIW Filter With Flexible Center Frequency and Bandwidth Using Liquid Crystal |
| title_full_unstemmed | Tunable Bandstop HMSIW Filter With Flexible Center Frequency and Bandwidth Using Liquid Crystal |
| title_short | Tunable Bandstop HMSIW Filter With Flexible Center Frequency and Bandwidth Using Liquid Crystal |
| title_sort | tunable bandstop hmsiw filter with flexible center frequency and bandwidth using liquid crystal |
| topic | Bandstop filter (BSF) half-mode substrate integrated waveguide (HMSIW) liquid crystal (LC) tunable filter |
| url | https://ieeexplore.ieee.org/document/8890802/ |
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