| 基于分形特征的DGS微带线传输特性分析 |
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| 引用本文： | 严冬,裴旭明,张超,季炜.基于分形特征的DGS微带线传输特性分析[J].重庆邮电学院学报(自然科学版),2010(1). |
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| 作者姓名： | 严冬 裴旭明 张超 季炜 |
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| 作者单位： | 重庆邮电大学网络化控制与智能仪器仪表教育部重点实验室;郑州轻工业学院机电学院;重庆大学热能工程系; |
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| 基金项目： | 重庆市教育委员会科学技术研究项目(KJ090507);;重庆邮电大学博士基金(A2008-68) |
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| 摘 要： | 缺陷地结构(defected ground structure,DGS)微带线的电磁散射特性取决于缺陷图形的几何特征和导波媒质等因素,因此缺陷图形设计是DGS微波电路设计的关键因素之一。提出一种新颖的DGS微带线。通过有限元法对不同Hilbert曲线宽度和长度的DGS结构微带线进行计算,计算结果表明,该结构在0~9 GHz频段内表现出2.43 GHz和7.11 GHz这2个谐振频率,对应频率的通带反射损耗低于-15 dB,并且阻带特性在谐振频率处比传统DGS微带线有更高的Q值。当Hilbert曲线宽度固定为0.2 mm时,其谐振频率和对应频点的Q值均与曲线长度成反比,最大达123.75;当Hilbert曲线长度固定为1.0 mm时,其谐振频率与曲线宽度成正比,而对应频点的Q值与曲线长度成反比,最大达146。
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| 关 键 词： | 微带线 Q因数 Hilbert曲线 缺陷地结构 |
Transmission property analysis for defected ground structure microstrip line based on fractal characteristic |
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| YAN Dong,PEI Xu-ming,ZHANG Chao,JI Wei.Transmission property analysis for defected ground structure microstrip line based on fractal characteristic[J].Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition),2010(1). |
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| Authors: | YAN Dong PEI Xu-ming ZHANG Chao JI Wei |
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| Institution: | 1.Key Laboratory of Network control and Intelligent Instrument of Ministry of Education;Chongqing University of Posts and Telecommunications;Chongqing 400065;P.R.China;2.School of Mechanical Engineering;Zhengzhou University of Light Industry;Zhengzhou 450000;3.Department of Engineering Thermalphysics;Chongqing University;Chongqing 400044;P.R.China |
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| Abstract: | Since the electromagnetic characteristic of defected ground structure(DGS) on microtrip line depends on the geometric feature and guided wave medium of defected image,the defected image design is one of the key factor for DGS microwave circuit design.Hence,a novel DGS on the microstrip line was presented.The different width and length of Hilbert curve geometries were investigated by finite element method(FEM).The computation results show that the DGS rejects the signal at two frequencies 2.43 GHz and 7.11 G... |
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