Metamaterial Spiral Antenna

被引：33

作者：

Nakano, H. ^{[1
]}

Miyake, J. ^{[1
]}

Oyama, M. ^{[1
]}

Yamauchi, J. ^{[1
]}

机构：

[1] Hosei Univ, Dept Sci & Engn, Tokyo 1848584, Japan

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2011年 / 10卷

关键词：

Dual circular polarization; right-and left-handed properties; spiral antenna;

D O I：

10.1109/LAWP.2011.2181305

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Conventional spiral antennas radiate either a left-handed circularly polarized (CP) wave or a right-handed CP wave in a specific direction (single CP radiation). This letter presents a novel spiral antenna, designated as the metamaterial spiral, which radiates a dual CP wave. First, the principle for left-handed CP radiation and right-handed CP radiation is explained using "current bands." Second, based on this principle, a prediction for dual CP radiation is made for a spiral structure. Third, for confirming this prediction, spiral arms are constructed using numerous straight filaments, each having a left-handed property with an inherent right-handed property. Numerical simulation confirms the predicted dual CP radiation. The gain and radiation pattern are discussed.

引用

页码：1555 / 1558

页数：4

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