Quasi-theoretical investigation of four circularly polarized metaloop antennas
Quasi-theoretical investigation of four circularly polarized metaloop antennas
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DOI：
10.1051/epjam/2018007
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发表时间：
2019-11
影响因子：
1.6
通讯作者：
H. Nakano;T. Abe;J. Yamauchi
中科院分区：
文献类型：
--
作者：
H. Nakano;T. Abe;J. Yamauchi
四个超材料线环（metaloop）天线，RND-MTLP-C，RND-MTLP-N，SQR-MTLP-C，和SQR-MTLP-N的研究，以澄清天线特性。每个金属环由C型超材料线或N型超材料线组成，其中C型和N型超材料线的单位单元的色散特性被设计为尽可能相似。RND-MTLP-C和SQR-MTLP-C充当跨快波频率区域的双频段反圆极化天线。结果表明，SQR-MTLP-N天线具有三频圆极化特性，而RND-MTLP-N天线不具有三频特性。的辐射方向图，增益和输入特性的VSWR方面的四个天线澄清。
Four metamaterial line loop (metaloop) antennas, RND-MTLP-C, RND-MTLP-N, SQR-MTLP-C, and SQR-MTLP-N are investigated to clarify the antenna characteristics. Each metaloop is made up of either a C-type metamaterial line or an N-type metamaterial line, where the dispersion characteristics of the unit cell for the C- and N-type metamaterial lines are designed to be as similar as possible. The RND-MTLP-C and SQR-MTLP-C act as a dual-band counter circularly polarized antenna across a fast wave frequency region. It is found that, depending on the deviation factor, the SQR-MTLP-N behaves as a tri-band circularly polarized antenna, but the RND-MTLP-N does not have the tri-band characteristic. The radiation pattern, gain, and input characteristic in terms of the VSWR for the four antennas are clarified.