{"title":"Axial ratio characteristics of an Archimedean spiral antenna on a thin magnetic material","authors":"M. Tanabe, Y. Masuda","doi":"10.1109/ICEAA.2010.5653176","DOIUrl":null,"url":null,"abstract":"This paper describes the axial ratio characteristics of an Archimedean spiral antenna placed on a thin magnetic material. The thin magnetic material having a high permittivity and some magnetic loss tangent is used. The outer circumference of the spiral antenna is chosen to be approximately one wavelength at 300 MHz. To obtain a unidirectional beam, the antenna is located above a ground plane. The proposed antenna is analyzed using the finite-difference time-domain method. For comparison, a spiral antenna without the thin magnetic material is also analyzed. We have come to the conclusion that the spiral antenna on the thin magnetic material radiates a circularly polarized wave at lower frequencies.","PeriodicalId":375707,"journal":{"name":"2010 International Conference on Electromagnetics in Advanced Applications","volume":"34 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2010 International Conference on Electromagnetics in Advanced Applications","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICEAA.2010.5653176","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
This paper describes the axial ratio characteristics of an Archimedean spiral antenna placed on a thin magnetic material. The thin magnetic material having a high permittivity and some magnetic loss tangent is used. The outer circumference of the spiral antenna is chosen to be approximately one wavelength at 300 MHz. To obtain a unidirectional beam, the antenna is located above a ground plane. The proposed antenna is analyzed using the finite-difference time-domain method. For comparison, a spiral antenna without the thin magnetic material is also analyzed. We have come to the conclusion that the spiral antenna on the thin magnetic material radiates a circularly polarized wave at lower frequencies.
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