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Dispersion Characteristics of the Microstrip Bend at Millimeter Wave Frequencies

ISSN号：1674-8042
期刊名称：Journal of Measurement Science and Instrumentation
时间：0
页码：268-271
语言：英文
分类：TN124[电子电信—物理电子学] TN817[电子电信—信息与通信工程]
作者机构：[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
相关基金：supported by basic research item of National Key Lab of Electronic Measurement Technology and National Natural Science Foundation of China（No.60876028 60633060）
相关项目：控制器的内建自恢复与内建自测试研究

关键词：色散特性, 微带线, 弯曲, 毫米波, FDTD算法, 频率, 有限差分时域, 传播常数, dispersion, FDTD, microstrip bends, millimeter wave

中文摘要：

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.

英文摘要：

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.

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