摘要
提出一种快速分析天线宽带特性的有效算法.该方法利用特征模对天线给定频带内少数频率点进行分析,选取这些频率点主要特征模函数组构成降维子空间;利用奇异值分解技术,构造该频带内一组与频率无关的特征模正交基.运用特征模正交基可以快速获得天线频带内所有频率点的特性.文中分析了蝶形天线与宽带缝隙天线给定频带内特性,并将计算结果与一般矩量法计算结果作比较,两者之间具有良好的一致性.
A method for analyzing wideband antennas is introduced. Characteristic modes and singular value decomposition are used at a small number of frequencies, and a set of frequency independent basis functions is constructed over the entire frequency range. The antenna characteristics can be determined rapidly by the frequency independent basis functions. A bowtie antenna and a slotted antenna are analyzed using the proposed method. The results agree with those obtained by direct method of moments, indicating correctness and effectiveness of the method.
出处
《应用科学学报》
CAS
CSCD
北大核心
2006年第5期458-462,共5页
Journal of Applied Sciences
基金
国家自然科学基金资助项目(60432040)
关键词
宽带天线
矩量法
特征模
奇异值分解
基函数
降维子空间
wideband antenna
method of moments
characteristic modes
singular value decomposition
basis functions
reduced order subspace
