{"title":"Analysis of Star Shape Microstrip Antenna with Multiple Shorting Posts for Wideband Response","authors":"Venkata A. P. Chavali, A. Deshmukh, A. Ambekar","doi":"10.1109/PuneCon50868.2020.9362391","DOIUrl":null,"url":null,"abstract":"Detail study of a Star Shape Microstrip Antenna with multiple shorting posts for wideband response with the explanation of resonant modes is presented in this paper. Modal study is performed by observing surface current distributions. Without shorting posts resonant modes excited on star shape microstrip antenna are TM01, TM20 and TM21. With the gradual addition of shorting posts, the impedance of resonance modes decreases enhancing the bandwidth up to 68% with a gain above 5 dBi. Redesign procedure of the similar structure for fundamental mode at 2 GHz on a triple layer substrate is provided. Redesigned antenna realized a bandwidth of 67% with more than 6 dBi gain which is comparable with reported configuration. Antenna exhibited a broadside radiation pattern over entire bandwidth with increased cross polarization in H-plane at higher frequencies.","PeriodicalId":368862,"journal":{"name":"2020 IEEE Pune Section International Conference (PuneCon)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2020-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2020 IEEE Pune Section International Conference (PuneCon)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PuneCon50868.2020.9362391","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Detail study of a Star Shape Microstrip Antenna with multiple shorting posts for wideband response with the explanation of resonant modes is presented in this paper. Modal study is performed by observing surface current distributions. Without shorting posts resonant modes excited on star shape microstrip antenna are TM01, TM20 and TM21. With the gradual addition of shorting posts, the impedance of resonance modes decreases enhancing the bandwidth up to 68% with a gain above 5 dBi. Redesign procedure of the similar structure for fundamental mode at 2 GHz on a triple layer substrate is provided. Redesigned antenna realized a bandwidth of 67% with more than 6 dBi gain which is comparable with reported configuration. Antenna exhibited a broadside radiation pattern over entire bandwidth with increased cross polarization in H-plane at higher frequencies.
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