{"title":"High Selectivity SIW Cavity Bandpass Filter Loaded CSRR with Perturbing Vias for Sub-6 GHz Applications","authors":"Namanathan Praveena, N. Gunavathi","doi":"10.2528/pierl22122008","DOIUrl":null,"url":null,"abstract":"|A narrowband, high selectivity Substrate Integrated Waveguide (SIW) bandpass (cid:12)lter with perturbing vias and CSRR is proposed for Sub-6 GHz applications. Firstly, the perturbing vias are positioned at the symmetrical axis of the SIW cavity which produces distinct electric (cid:12)eld distribution for the (cid:12)rst two modes. Next, the ground plane is engraved with the CSRR placed at an offset distance on either side of the perturbing vias, forming the coupling arrangement that combines mixed and magnetic, electric coupling. The presence of CSRRs resulted in a narrowband (cid:12)lter. The (cid:12)lter’s center frequency is 4.947 GHz with a fractional bandwidth of 1.16%. By comparing the fabricated (cid:12)lter to an existing SIW conventional multi-cavity or cascaded resonator, a size reduction of 117% is achieved. The simulated and measured results agree with each other.","PeriodicalId":20579,"journal":{"name":"Progress in Electromagnetics Research Letters","volume":"1 1","pages":""},"PeriodicalIF":0.7000,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Progress in Electromagnetics Research Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2528/pierl22122008","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 5
Abstract
|A narrowband, high selectivity Substrate Integrated Waveguide (SIW) bandpass (cid:12)lter with perturbing vias and CSRR is proposed for Sub-6 GHz applications. Firstly, the perturbing vias are positioned at the symmetrical axis of the SIW cavity which produces distinct electric (cid:12)eld distribution for the (cid:12)rst two modes. Next, the ground plane is engraved with the CSRR placed at an offset distance on either side of the perturbing vias, forming the coupling arrangement that combines mixed and magnetic, electric coupling. The presence of CSRRs resulted in a narrowband (cid:12)lter. The (cid:12)lter’s center frequency is 4.947 GHz with a fractional bandwidth of 1.16%. By comparing the fabricated (cid:12)lter to an existing SIW conventional multi-cavity or cascaded resonator, a size reduction of 117% is achieved. The simulated and measured results agree with each other.
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