Dispersion Characteristics of the Microstrip Bend at Millimeter Wave Frequencies  

作　　者：毛剑波 杨明武 梁华国 宣晓峰 姜万顺 刘金现 

机构地区：[1]School of Electroronics and Applied Physics, ttefei University of Technology, Hefei 230009, China [2]The 41st Research Institute of China Electronics Technology Group Corporation, Qingdao 266555, China

出　　处：《Journal of Measurement Science and Instrumentation》2011年第3期268-271,共4页测试科学与仪器（英文版）

基　　金：supported by basic research item of National Key Lab of Electronic Measurement Technology and National Natural Science Foundation of China(No.60876028,60633060)

摘　　要：The effect of the microstrip bend on the propagation characteristics of a microstrip line was investigated based on the Finite-Difference Time-Domain(FDTD)method.The dispersive characteristics of a microstrip line with a bend are quite different from that of a uniform straight microstrip line.The effect of bend discontinuity on propagation constants deceases exponentially with the distance form the corner of the bend.This can be explained by the fact that the higher order modes excited by the bend discontinuities have intrinsic properties of exponentially decay with the distance from the bend discontinuities.This effect can be negligible(less than five percent)when the distance is beyond ten times of conductor strip width.The S parameters and propagation constants comparison between unmitered and mitered bends are also presented.The proposed method which takes advantage of the FDTD algorithm and the Root Mean Square Deviation(RMSD)analysis is also an effective way for analyzing the dispersion characteristics of other planar transmission lines.

关 键 词：DISPERSION FDTD microstrip bends millimeter wave 

分 类 号：TN011[电子电信—物理电子学]