摘要
在分析通信天线宽频带内的特性时 ,一般需要选取许多频点采用矩量法逐点求解天线上的电流分布 ,计算时间长。研究了一种对电流系数矩阵 [I]进行频域插值的方法来快速分析天线宽频带内的电特性。该方法先利用矩量法直接求出少数较大间隔的频率点上的电流展开系数矩阵 [I],然后利用这些采样频点上的 [I]矩阵来插值计算其它频点上的电流展开系数矩阵的元素。采用该方法分析了几个不同天线 ,与直接采用矩量法计算相比 ,该方法计算时间显著减少 。
The evaluation of the broadband performance of communication antennas using the method of moments (MOM) needs a long time since the current distribution must be computed for each frequency. This paper presents an efficient method for the computation of the antenna broadband performance using frequency interpolation of current coefficient matrix . With this method, the elements of a few matrices at relatively large frequency intervals are directly computed from MOM. These matrices are then used to interpolate the elements of other matrices at the intermediate frequencies. As examples, several different antennas are analyzed by this method. Compared to direct MOM, CPU time of this method is significantly reduced and the errors are very small.
出处
《电波科学学报》
EI
CSCD
2002年第2期187-191,共5页
Chinese Journal of Radio Science
关键词
通信天线
宽频带
电特性
antenna, method of moments, current coefficient matrix, interpolation
