采用Z矩阵插值法快速计算套筒单极子天线参数

采用Z矩阵插值法快速计算套筒单极子天线参数

内容简介：利用矩量法分析计算天线宽频带电性能参数时，通常需要对每一个新频率点重新计算阻抗矩阵Z，介绍了一种Z矩阵插值法，仅需对3个插值基点频率直接进行计算，便可通过二次插值快速生成带内其他频率点上的Z矩阵．与直接计算相比，Z矩阵插值法将计算速度提高了近10倍，而插值造成的误差却很小．最后，将该方法与最优化技术相结合，设计出一副工作在200～700MHz频段、VSWR小于2.6、增益大于5.1dB的实用套筒单极子天线，理论分析与实验测试吻合良好．

Abstract：The analysis of antennas over a wide frequency range oftenrequires the computation of the impedance matrix Z at each new frequency using the method of moment. This paper describes a method of Z matrix interpolation, which can approximately reduce the computing time by 10 times and lead to a very small error. Finally, using the Z interpolation method incorporated into an optimization technique, a practical sleeve monopole antenna, with the VSWR of less than 2.6 and the gain of more than 5.1 dB in the 200～700 MHz frerquency band, is designed. The calculated results are in good agreement with the experimental results.

作者：孙保华, 刘其中, 张厚, 焦永昌, 尹应增,

关键词：套筒单极子天线, 矩量法, 宽频带,