摘要
针对对数周期偶极天线 (LPDA)设计过程中存在的两个问题 :阻抗矩阵计算方法的选择和高频段方向图的优化问题 ,通过分析比较各种阻抗矩阵计算方法的优劣 ,确定用Galerkin法求解Poclinton方程是最佳方法 ;在设计过程中提出一种新的设计思想———改变天线的结构参数 ,改善天线高频段方向图的性能 ,并以Galerkin法为基础进行计算机模拟 ,结果显示效果良好 。
Aiming at solving the two problems in the design of LPDA(log periodic dipole antennas), which are how to choose a good calculation method of mutual impedance matrix and improve the radiation pattern at high frequencies, the thesis analyses and compares the calculation methods. A conclusion is drawn that solving Poclinton equation by Galerkin method is the best. A new method through changing LPDA’s structure is presented to improve LPDA’s radiation pattern at high frequencies,and results of computer imitation show it works well. Meanwhile it can enhance the gain at the whole frequencies.
出处
《武汉大学学报（理学版）》
CAS
CSCD
北大核心
2003年第1期141-144,共4页
Journal of Wuhan University:Natural Science Edition
基金
国家十五 863计划资助项目 (863 81 8 0 9 1 1 )
