近地垂直对数周期天线的性能分析

采用混合位电场积分方程结合矩量法分析近地垂直对数周期天线,运用微波网络理论处理馈源问题,分别利用二级离散复镜像法和一种快速方法计算近、远场的Sommerfeld积分,较好地解决了分层媒质中电磁辐射与散射问题中的棘手问题,其方法简练,理论完备,结果与有关文献吻合良好,证实了该方法的正确性和通用性。

Performance Analysis of Vertical Log-periodic Antenna over Ground Plane

In this paper,mixed potential electric field integral equation and the method of moment are used to analyze a vertical log-periodic antenna over ground plane.The microwave network theory is used to deal with the excitation.The discrete complex image method based on a two-level approximation and a guick way are used to calculate the Sommerfeld integral in the near region and in the far region respectively,which solve properly the key difficulty of electromagnetic scattering and radiation problem in layered media.The method is concise and the theory is perfect.The result obtained is consistent with some literature data about it,which confirms the correctness and the universality of this method.