Compact Substrate-Integrated Waveguide Bandpass Filter Using Open-Circuited and Short-Circuited Vias and Slots.
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| Title: | Compact Substrate-Integrated Waveguide Bandpass Filter Using Open-Circuited and Short-Circuited Vias and Slots. |
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| Authors: | Qun-Lin Chen1, Chun-Long Wang1 clw@mail.ntust.edu.tw |
| Source: | Progress in Electromagnetics Research C. 2025, Vol. 161, p76-87. 12p. |
| Subjects: | Substrate integrated waveguides, Bandpass filters, Electronic circuit design, Telecommunication, Electric filters, Transmission zeros, Impedance matching, Radar |
| Abstract: | This paper presents a compact substrate-integrated waveguide (SIW) bandpass filter featuring a simple structure and transmission zeros. The proposed filter utilizes a quarter-wavelength transmission line in conjunction with a short-circuited and open-circuited via structure to achieve a third-order bandpass filter response. The filter achieves a passband from 14.15 GHz to 15.86 GHz with a return loss (|S11|) better than -10 dB, indicating good impedance matching. To enhance out-of-band rejection, single- and double-slot structures are introduced along the quarter-wavelength transmission line of the SIW filter without increasing the overall circuit area. The SIW filter using the single-slot structure generates a transmission zero at 16.5 GHz, albeit with limited suppression. In contrast, the SIW filter using the double-slot structure introduces a deeper transmission zero at the same frequency, substantially improving stopband attenuation while maintaining excellent passband performance. The proposed filter offers high selectivity, compact size, and structural simplicity, making it a strong candidate for high-frequency communication and radar system applications. To validate the design, prototypes of the SIW bandpass filter, including the prototype version, single-slot version, and double-slot version, were fabricated and measured. The measurement results show good agreement with the simulation results. [ABSTRACT FROM AUTHOR] |
| Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 189584759 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Compact Substrate-Integrated Waveguide Bandpass Filter Using Open-Circuited and Short-Circuited Vias and Slots. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Qun-Lin+Chen%22">Qun-Lin Chen</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Chun-Long+Wang%22">Chun-Long Wang</searchLink><relatesTo>1</relatesTo><i> clw@mail.ntust.edu.tw</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Progress+in+Electromagnetics+Research+C%22">Progress in Electromagnetics Research C</searchLink>. 2025, Vol. 161, p76-87. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Substrate+integrated+waveguides%22">Substrate integrated waveguides</searchLink><br /><searchLink fieldCode="DE" term="%22Bandpass+filters%22">Bandpass filters</searchLink><br /><searchLink fieldCode="DE" term="%22Electronic+circuit+design%22">Electronic circuit design</searchLink><br /><searchLink fieldCode="DE" term="%22Telecommunication%22">Telecommunication</searchLink><br /><searchLink fieldCode="DE" term="%22Electric+filters%22">Electric filters</searchLink><br /><searchLink fieldCode="DE" term="%22Transmission+zeros%22">Transmission zeros</searchLink><br /><searchLink fieldCode="DE" term="%22Impedance+matching%22">Impedance matching</searchLink><br /><searchLink fieldCode="DE" term="%22Radar%22">Radar</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: This paper presents a compact substrate-integrated waveguide (SIW) bandpass filter featuring a simple structure and transmission zeros. The proposed filter utilizes a quarter-wavelength transmission line in conjunction with a short-circuited and open-circuited via structure to achieve a third-order bandpass filter response. The filter achieves a passband from 14.15 GHz to 15.86 GHz with a return loss (|S11|) better than -10 dB, indicating good impedance matching. To enhance out-of-band rejection, single- and double-slot structures are introduced along the quarter-wavelength transmission line of the SIW filter without increasing the overall circuit area. The SIW filter using the single-slot structure generates a transmission zero at 16.5 GHz, albeit with limited suppression. In contrast, the SIW filter using the double-slot structure introduces a deeper transmission zero at the same frequency, substantially improving stopband attenuation while maintaining excellent passband performance. The proposed filter offers high selectivity, compact size, and structural simplicity, making it a strong candidate for high-frequency communication and radar system applications. To validate the design, prototypes of the SIW bandpass filter, including the prototype version, single-slot version, and double-slot version, were fabricated and measured. The measurement results show good agreement with the simulation results. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Progress in Electromagnetics Research C is the property of Electromagnetics Academy and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.2528/PIERC25091104 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 76 Subjects: – SubjectFull: Substrate integrated waveguides Type: general – SubjectFull: Bandpass filters Type: general – SubjectFull: Electronic circuit design Type: general – SubjectFull: Telecommunication Type: general – SubjectFull: Electric filters Type: general – SubjectFull: Transmission zeros Type: general – SubjectFull: Impedance matching Type: general – SubjectFull: Radar Type: general Titles: – TitleFull: Compact Substrate-Integrated Waveguide Bandpass Filter Using Open-Circuited and Short-Circuited Vias and Slots. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Qun-Lin Chen – PersonEntity: Name: NameFull: Chun-Long Wang IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 11 Text: 2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 19378718 Numbering: – Type: volume Value: 161 Titles: – TitleFull: Progress in Electromagnetics Research C Type: main |
| ResultId | 1 |
