一种八木天线前向增益优化的改进处理方法  

An improved method of optimization for forward gain of Yagi-Uda antenna

作　　者：杨绍麟[1] 柯亨玉[1] 侯杰昌[1] 吴世才[1] 杨子杰[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430072

出　　处：《电波科学学报》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 )

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.

关 键 词：八木天线 数值优化 前向增益 

分 类 号：TN823.17[电子电信—信息与通信工程]