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本文给出了一种严格分析有限尺寸圆盘地面单极天线的新方法———模式匹配法 .该方法通过在天线上、下两边平行放置两个无限大良导电平面 ,以及合理划分区域 ,使得每个分区中的场分量能够采用柱谐展开式解析表示 ,且展开系数由导体表面边界条件及分区交界处场分量连续条件加以确定 .在此基础上 ,进一步分析天线的输入阻抗等电性能 .计算结果表明 :对不同尺寸圆盘地面单极子天线 ,理论分析与文献中的实验结果均十分吻合 .同时 ,由于场量的解析表示 ,使得计算速度较快
In this paper, a new method of rigorous analysis of a monopole antenna with a finite size is proposed, which is a pattern matching method. By placing two infinitely good conducting planes parallel to each other on the upper and lower sides of the antenna, The field component in each subarea can be expressed in the form of a cylindrical harmonic expansion, and the expansion coefficient is determined by the continuity of the conductor surface boundary conditions and the field components at the interface of the subarea. Based on this, the input impedance and other electrical properties of the antenna are further analyzed. The calculation results show that the theoretical analysis of the monopole antenna on the disk with different sizes agree well with the experimental results in the literature, meanwhile, the computation speed is faster due to the analytic representation of the field quantity