Purpose

The purpose of this paper is to derive the dyadic representations of Green’s function in lossy medium because of the electric current dipole source radiating in close proximity of a PEC wedge and to reveal the effect of conductivity on the scattered electric field.

Design/methodology/approach

By using the scalarization procedure, the paraxial fields are obtained first and then scalar Green’s functions are used to derive asymptotic forms of the dyadic Green’s functions. The problem is also analyzed by the image theory and analytical derivations are compared. However, analytically calculated results are validated with FEKO, a commercially available numerical electromagnetic field solver.

Findings

The results indicate that excellent agreement is observed between analytical and numerical results. Moreover, it is found that the presence of conductivity introduces a reduction in scattered electric fields.

Originality/value

Asymptotically derived forms presented in this study can be used to calculate field distributions in the paraxial region of a wedge in a lossy medium.

中文翻译：

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有损介质中电偶极子激发的 PEC 楔的近场散射

目的

本文的目的是推导出格林函数在有损介质中的二元表示，因为电流偶极子源在 PEC 楔附近辐射，并揭示电导率对散射电场的影响。

设计/方法/方法

通过使用标量化程序，首先获得近轴场，然后使用标量格林函数推导出二进格林函数的渐近形式。该问题还通过图像理论进行了分析，并对解析推导进行了比较。然而，分析计算的结果已通过商用数值电磁场求解器 FEKO 进行验证。

发现

结果表明，在分析结果和数值结果之间观察到了极好的一致性。此外，发现导电性的存在导致散射电场的减少。

原创性/价值

本研究中提出的渐近导出形式可用于计算有损介质中楔形近轴区域的场分布。