手征介质球壳内点偶极天线的辐射特性

Radiated Characteristics of Point Dipole in Chiral Spherical Shell

本文首次给出了含源手征介质球壳区域的并矢格林函数。研究了点偶极天线位于球壳中心处的辐射场特性,以及归一化辐射阻抗随球壳厚度—波长之比的变化规律。在阻抗匹配条件下,分析了点偶极天线的辐射场极化特性。结果表明,手征介质在天线工程领域有潜在的应用价值。

In this paper,The dyadic Green's functions of a current source in a chiral spherical shell are given.The radiated fields and normalized radiation impedance are studied for a point dipole locat- ed at the center of a chiral spherical shell.The polarization characteristics of the radiated fields are also investigated.The results show that chiral media have potential applications in antenna engi- neering.