摘要
就文献中八木天线前向增益优化的单元间距微扰迭代法 ,提出了一种改进的处理方法。它采用 Hallen方程和电流分布函数的殆全域多项式展开相结合的方法作为天线分析的基础 ,使得优化算法的数学表达更为简洁 ,尤其避免了半波振子作激励单元时繁杂的数学处理 ,简化了数值计算过程 ,而且矩阵维数增加不多。文中给出了天线分析部分的计算实例和结果比较。
An improvement was made in the optimization method for the forward gain of Yagi-Uda antenna through adjusting the inter-element spacing by tierative perturbation.In the process of optimization, Yagi-Uda antenna is analyzed by Hallen-type equations combined with almost-entire domain polynomial representation of current distribution.The underlying antenna analysis method above simplified the mathematical expression of optimization algorithm, especially avoiding special mathematical disposal for the case of half-wave driver.In the improved method,the calculation cost had been greatly reduced, and at the same time, the dimension of matrices was not much augmented.Some numerical examples in the analysis part of the optimization method for the forward gain of Yagi-Uda antennas are illustrated.
出处
《电波科学学报》
EI
CSCD
2001年第2期162-167,共6页
Chinese Journal of Radio Science
基金
国家高科技发展计划资助项目 (818- 0 1- 0 2 )
关键词
八木天线
数值优化
前向增益
Yagi-Uda antenna almost-entire domain polynomial numerical optimization iterative perturbation method
