全向波导裂缝阵列天线的数值分析  

Numerical Analysis of Omnidirectional Slotted Antenna

作　　者：李建瀛 李乐伟[2] 

机构地区：[1]新加坡-MIT联盟(SMA),新加坡117576 [2]新加坡国立大学,新加坡119620

出　　处：《现代雷达》2004年第8期61-63,共3页Modern Radar

摘　　要：介绍了一种新的分析全向矩形波导裂缝阵列天线方向图的方法 .以电场积分方程为基础 ,选用Rao ,Wilton和Glisson的RWGfunction作为矩量法计算的基函数和检验函数 ,计算了裂缝波导内外壁上的电流分布 ,继而对全向波导裂缝阵的辐射方向图作了计算。数值计算结果也验证了T .Takeshima的实验结论即裂缝对矩形波导的E面全向辐射特性及波导高度对方向图不圆度的影响。同时也说明了文中所介绍的方法的有效性。This paper proposes a new approach for analyzi ng omnidirectional waveguide slots and their arrays. The electric field integral e quation (EFIE) is formulated in a standard way, and the integral equation is the n solved by using the method of moments where the Rao, Wilton and Glisson (RWG) functions are employed as both basis and weighting functions in the Galerkin's p rocedure. After the currents on the wall of waveguide are acquired the radiation pattern of omnidirectional waveguide slot antenna is computed. The measurement results (by T. Takeshima) are verified by the computed results in this paper. An d the results shown that the high of the waveguide affect the roundness of the r adiation pattern very strong. The analysis method which is introduced in this pa per is verified at the same time.

关 键 词：裂缝天线 天线方向图 矩形波导 数值分析 

分 类 号：TN820[电子电信—信息与通信工程]