Significance of the Higher-order Modes to the Near-field Calculation of the Spherical Helix Antennas

Significance of the Higher-order Modes to the Near-field Calculation of the Spherical Helix Antennas
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高阶模态对球形螺旋天线近场计算的意义

DOI：
10.1109/apwc49427.2022.9899885
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发表时间：
2022
期刊：
Proc. of 2022 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)
影响因子：
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通讯作者：
Keisuke FUJITA
Keisuke FUJITA
中科院分区：
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文献类型：
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作者：
藤田 佳祐;野口 啓介;渡邉翔一郎，土居真太朗，日髙邦彦;Keisuke FUJITA

文献摘要

相似文献

采用数值[1]和解析[1]方法（如矢量球谐波（VSH））分析了球面螺旋天线（SHAs）的辐射特性Q因子和辐射效率。VSH使人们能够得出理论结果。然而，以往的VSH研究仅限于最低TM和/或TE模态在整个球面上的电流分布。因此，在传统的理论模型中忽略了高阶模态的影响。在这个总结中，通过用VSH计算SHA的近电场来证明高阶模态的重要性。
The radiation characteristics of spherical helix antennas (SHAs) such as the Q factor and the radiation efficiency were analyzed by both numerical [1] and analytical [2] method such as the vector spherical harmonics (VSH). The VSH enables one to derive theoretical results. However, previous study with the VSH were restricted to the current distribution of the lowest TM and/or TE modes on the whole spherical surface. The effect of the higher-order modes was, thus, ignored in the conventional theoretical model. In this summary, the significance of the higher-order modes is demonstrated by calculating the near-electric field of the SHA with the VSH.