{"title":"Metamaterial-based spiral antenna with unbalanced excitation","authors":"H. Nakano, K. Anjo, J. Yamauchi","doi":"10.1109/IWAT.2015.7365341","DOIUrl":null,"url":null,"abstract":"The radiation from a metamaterial-based two-arm spiral antenna is investigated, where the phase relationship of the excitation sources for the two arms (deviation phase) is varied to cause unbalanced-mode excitation. It is found that the radiation field in the antenna-axis direction decreases by 1-dB when the deviation phase reaches approximately 60 degrees.","PeriodicalId":342623,"journal":{"name":"2015 International Workshop on Antenna Technology (iWAT)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2015-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2015 International Workshop on Antenna Technology (iWAT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/IWAT.2015.7365341","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
The radiation from a metamaterial-based two-arm spiral antenna is investigated, where the phase relationship of the excitation sources for the two arms (deviation phase) is varied to cause unbalanced-mode excitation. It is found that the radiation field in the antenna-axis direction decreases by 1-dB when the deviation phase reaches approximately 60 degrees.
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