矩形环可重构天线的建模和仿真研究  

Simulation and Modeling of Rectangular Ring Reconfigurable Antenna

作　　者：陈国虎[1] 雷雪[1] 陈紫阳[1] 乔凯[1] 贺文颉 

机构地区：[1]信息工程大学,河南郑州450001

出　　处：《信息工程大学学报》2014年第1期57-61,104,共6页Journal of Information Engineering University

基　　金：国家科技重大专项资助项目(2009ZX0300303C-003)

摘　　要：可重构天线采用同一个天线或天线阵,通过引入开关器件控制天线的辐射结构来实现工作模式的转换,使其具有多个天线的功能。文中阐述了矩形环可重构天线工作的基本机理,为实现满足不同环境对天线性能的要求,利用Matlab对矩形环可重构天线进行建模,将遗传算法与矩量法相结合,对天线的性能进行搜索寻优。为进一步提高天线分析速度,从广义角度把天线的开关当作加载元件处理,利用Sherman-Morrison-Woodbury公式减少阻抗矩阵的计算量,提高天线特性参数的计算速度,改善了现有商业软件对天线仿真分析耗时大的问题,显著提高了效率。The reconfigurable antenna gets its property changed by controlling the states of different switches introduced on it. This paper gives a brief description about the basic mechanisms of rectan- gular ring reconfigurable antenna. To meet the demands in different environment, an antenna model is built up and a reconfigurable antenna is optimized by the method of moment （MOM） combined with the genetic algorithm （GM）. The calculation work of the impedance matrix equation is further accelerated by regarding the switches as loads and the application of Sherman-Morrison-Woodbury equation. This provides a new way to the analysis of reconfigurable antenna which has the efficiency improved compared with the existing business software.

关 键 词：可重构天线 矩量法 快速算法 遗传算法 

分 类 号：TN92[电子电信—通信与信息系统] TN821[电子电信—信息与通信工程]