有耗媒质半空间上的垂直线天线

Vertical Wire Antenna above Lossy Half-space

有耗媒质半空间上线天线辐射问题通常归结为求解含有索末菲积分的广义电场积分方程来处理。因此准确、有效地计算索末菲积分是研究上述问题的关键。针对近场区的索末菲积分的计算问题,文中引入一种基于二级离散复镜像理论的改进的广义函数束方法;对于远场区的索末菲积分,利用远场首项近似公式对其进行计算。数值结果表明文中方法具有运算精度高、速度快、适用频带宽的特点。

The problem of horizontal wire antenna radiating over a lossy half-space is usually treated through solving the generalized electric field integral equation,which contains Sommerfeld integrals within its green′s function.So how to accurately and quickly calculate the Sommerfeld integrals is the key to the evaluation of the above problem.In this paper,generalized pencil-of-function method(GPOF) based on two-level discrete complex image theory is introduced to calculate the Sommerfeld integrals in the near-fi...