Compact Microstrip Filter With Third-Order Quasi-Elliptic Bandpass Response
In this paper, a novel microstrip filter is proposed, which can realize a third-order quasi-elliptic bandpass response. In order to reveal the physical mechanism of the microstrip filter, a lumped-element equivalent circuit is set up and the equivalence relations between its circuit elements and the...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2018-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8502103/ |
| _version_ | 1818875975977402368 |
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| author | Jun Xu Fei Xiao Yu Cao Yong Zhang Xiaohong Tang |
| author_facet | Jun Xu Fei Xiao Yu Cao Yong Zhang Xiaohong Tang |
| author_sort | Jun Xu |
| collection | DOAJ |
| description | In this paper, a novel microstrip filter is proposed, which can realize a third-order quasi-elliptic bandpass response. In order to reveal the physical mechanism of the microstrip filter, a lumped-element equivalent circuit is set up and the equivalence relations between its circuit elements and the electrical parameters of the microstrip filter are presented. According to filter specifications, the initial structural parameters of the microstrip filter can be easily calculated through these equivalence relations. As demonstration, an actual microstrip filter was designed, fabricated and measured, whose center frequency is at 2.50 GHz and fractional bandwidth is 36%. There are two transmission zeros near to the passband to improve the frequency selectivity, which makes the roll-off rate at each side of the passband as high as 125 and 50 dB/GHz, respectively. The out-of-band suppression from 3.6 to 6.1 GHz is greater than 40 dB. The size of the fabricated filter is 0.21λg × 0.18λg, which is very compact. |
| first_indexed | 2024-12-19T13:35:02Z |
| format | Article |
| id | doaj.art-64b8cf655eaf4831bc950830f2077c4e |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T13:35:02Z |
| publishDate | 2018-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-64b8cf655eaf4831bc950830f2077c4e2022-12-21T20:19:15ZengIEEEIEEE Access2169-35362018-01-016633756338110.1109/ACCESS.2018.28770098502103Compact Microstrip Filter With Third-Order Quasi-Elliptic Bandpass ResponseJun Xu0Fei Xiao1https://orcid.org/0000-0003-2385-0377Yu Cao2Yong Zhang3Xiaohong Tang4School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, ChinaChengdu Tiger Microwave Technology Co., Ltd., Chengdu, ChinaChengdu Tiger Microwave Technology Co., Ltd., Chengdu, ChinaSchool of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, ChinaSchool of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, ChinaIn this paper, a novel microstrip filter is proposed, which can realize a third-order quasi-elliptic bandpass response. In order to reveal the physical mechanism of the microstrip filter, a lumped-element equivalent circuit is set up and the equivalence relations between its circuit elements and the electrical parameters of the microstrip filter are presented. According to filter specifications, the initial structural parameters of the microstrip filter can be easily calculated through these equivalence relations. As demonstration, an actual microstrip filter was designed, fabricated and measured, whose center frequency is at 2.50 GHz and fractional bandwidth is 36%. There are two transmission zeros near to the passband to improve the frequency selectivity, which makes the roll-off rate at each side of the passband as high as 125 and 50 dB/GHz, respectively. The out-of-band suppression from 3.6 to 6.1 GHz is greater than 40 dB. The size of the fabricated filter is 0.21λg × 0.18λg, which is very compact.https://ieeexplore.ieee.org/document/8502103/Elliptic filterfrequency selectivitylumped-element equivalent circuitmicrostrip filterroll-off ratetransmission zero |
| spellingShingle | Jun Xu Fei Xiao Yu Cao Yong Zhang Xiaohong Tang Compact Microstrip Filter With Third-Order Quasi-Elliptic Bandpass Response IEEE Access Elliptic filter frequency selectivity lumped-element equivalent circuit microstrip filter roll-off rate transmission zero |
| title | Compact Microstrip Filter With Third-Order Quasi-Elliptic Bandpass Response |
| title_full | Compact Microstrip Filter With Third-Order Quasi-Elliptic Bandpass Response |
| title_fullStr | Compact Microstrip Filter With Third-Order Quasi-Elliptic Bandpass Response |
| title_full_unstemmed | Compact Microstrip Filter With Third-Order Quasi-Elliptic Bandpass Response |
| title_short | Compact Microstrip Filter With Third-Order Quasi-Elliptic Bandpass Response |
| title_sort | compact microstrip filter with third order quasi elliptic bandpass response |
| topic | Elliptic filter frequency selectivity lumped-element equivalent circuit microstrip filter roll-off rate transmission zero |
| url | https://ieeexplore.ieee.org/document/8502103/ |
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