Design of a highly selective bandstop filter using dual path capacitive coupled SIR structure

Design of a highly selective bandstop filter using dual path capacitive coupled SIR structure | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article Design of a highly selective bandstop filter using dual path capacitive coupled SIR structure Jihad Younis, Muhammad Abdul Rehman, Sohail Khalid Khalid This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-1278563/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract This article presents the design of a wideband bandstop filter (BSF) with the ultimate goal of improving selectivity. The designedfilter is consists of a dual-path Capacitive Coupled Step Impedance Resonator (DP-CCSIR). A theoretical analysis of theproposed DP-CCSIR structure has been presented in this paper. It has been observed that the selectivity can be improved byincreasing the order of the dual coupled step impedance resonator. The proposed design produces a wideband BSF centeredat 5.25 GHz with fractional bandwidth of 58.5%. The results have demonstrated that the resonant frequencies are regulatedby varying the electrical length of CCSIR. Moreover, it has also been realized that dual-path CCSIR is involved in producingthe finite frequency transmission poles, hence leading to better selectivity. However, the proposed design has been validatedthrough the fabrication of three prototypes. The measurement shows good concurrence with the simulated results. Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-1278563","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":79013652,"identity":"4248d2b5-599b-4b12-9251-1cb0ac8ab452","order_by":0,"name":"Jihad Younis","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA/0lEQVRIiWNgGAWjYBACxmYeBgYeBgsIr6ICSDAzNxCjRQLCO3MGpIURvxaQeoSWs21gY/BrYW7nPfjhTY2EPX978sYPB+fVRvO3A7X8qNiGx2F8yZJzjkkkzjjzrFji4LbjuTMOMzYw9py5jc8vBtI8bBIJDDdyDKQ/bjuW2wDUwszYhleL8W+efxL28jdyjH8cnHMsdz4RWsykedskGDfcyDGTONhQk7uBGC2Wc/skEjeeeVZmceDYgdyNQC0H8fnFsP+M8Y0332zs5Y4nb75xoKYud975wwcf/KjAo6UBzkwwABKHwcwDONUDgTyCCdZSh0/xKBgFo2AUjFAAAJ/hXsZYi3anAAAAAElFTkSuQmCC","orcid":"","institution":"Aden University, Aden, P.O.Box 6014, Yemen","correspondingAuthor":true,"prefix":"","firstName":"Jihad","middleName":"","lastName":"Younis","suffix":""},{"id":79013649,"identity":"8ba935c6-3da2-4003-8c36-093ce84969c5","order_by":1,"name":"Muhammad Abdul Rehman","email":"","orcid":"","institution":"Department of Electrical Engineering, Riphah Internationl Univeristy, Pakistan","correspondingAuthor":false,"prefix":"","firstName":"Muhammad","middleName":"Abdul","lastName":"Rehman","suffix":""},{"id":79013651,"identity":"68d7f0d9-61c9-48bc-b722-d6e3a28a4e63","order_by":2,"name":"Sohail Khalid Khalid","email":"","orcid":"","institution":"Department of Electrical Engineering, Riphah Internationl Univeristy, Pakistan","correspondingAuthor":false,"prefix":"","firstName":"Sohail","middleName":"Khalid","lastName":"Khalid","suffix":""}],"badges":[],"createdAt":"2022-01-20 06:44:09","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-1278563/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-1278563/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":17716331,"identity":"e4742454-6f3d-4e89-a26d-510c4220ba08","added_by":"auto","created_at":"2022-01-27 21:26:11","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":4909991,"visible":true,"origin":"","legend":"","description":"","filename":"main.pdf","url":"https://assets-eu.researchsquare.com/files/rs-1278563/v1_covered.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Design of a highly selective bandstop filter using dual path capacitive coupled SIR structure","fulltext":[{"header":"Full Text","content":"This preprint is available for \u003ca href='/article/rs-1278563/latest.pdf' target='_blank'\u003edownload as a PDF\u003c/a\u003e."}],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":false,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-1278563/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-1278563/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":" This article presents the design of a wideband bandstop filter (BSF) with the ultimate goal of improving selectivity. The designedfilter is consists of a dual-path Capacitive Coupled Step Impedance Resonator (DP-CCSIR). A theoretical analysis of theproposed DP-CCSIR structure has been presented in this paper. It has been observed that the selectivity can be improved byincreasing the order of the dual coupled step impedance resonator. The proposed design produces a wideband BSF centeredat 5.25 GHz with fractional bandwidth of 58.5%. The results have demonstrated that the resonant frequencies are regulatedby varying the electrical length of CCSIR. Moreover, it has also been realized that dual-path CCSIR is involved in producingthe finite frequency transmission poles, hence leading to better selectivity. However, the proposed design has been validatedthrough the fabrication of three prototypes. The measurement shows good concurrence with the simulated results. 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