{"title":"宽带圆极化环形天线","authors":"K. Hirose, K. Okiyama, H. Nakano","doi":"10.1109/APUSNCURSINRSM.2017.8072294","DOIUrl":null,"url":null,"abstract":"Using the method of moments, we analyze three types of loop antennas with a perturbation segment (PS). Each loop has a single feed and is backed by a ground plane. It is found that the first loop having double PS's shows a circularly polarized (CP) wave bandwidth of 5% for a 3-dB axial-ratio criterion, which is two times wider than that of the second loop having a single PS. Further analysis reveals that a CP wave bandwidth of 9% can be obtained for the third loop having a single PS whose length is greatly increased.","PeriodicalId":264754,"journal":{"name":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","volume":"145 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2017-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Loop antennas with wideband circular polarization\",\"authors\":\"K. Hirose, K. Okiyama, H. Nakano\",\"doi\":\"10.1109/APUSNCURSINRSM.2017.8072294\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Using the method of moments, we analyze three types of loop antennas with a perturbation segment (PS). Each loop has a single feed and is backed by a ground plane. It is found that the first loop having double PS's shows a circularly polarized (CP) wave bandwidth of 5% for a 3-dB axial-ratio criterion, which is two times wider than that of the second loop having a single PS. Further analysis reveals that a CP wave bandwidth of 9% can be obtained for the third loop having a single PS whose length is greatly increased.\",\"PeriodicalId\":264754,\"journal\":{\"name\":\"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting\",\"volume\":\"145 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2017-10-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072294\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APUSNCURSINRSM.2017.8072294","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Using the method of moments, we analyze three types of loop antennas with a perturbation segment (PS). Each loop has a single feed and is backed by a ground plane. It is found that the first loop having double PS's shows a circularly polarized (CP) wave bandwidth of 5% for a 3-dB axial-ratio criterion, which is two times wider than that of the second loop having a single PS. Further analysis reveals that a CP wave bandwidth of 9% can be obtained for the third loop having a single PS whose length is greatly increased.
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