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工程设计学报
Chinese Journal of Engineering Design  2011, Vol. 18 Issue (1): 71-76    DOI:
    
Novel design of composite right/left handed transmission line based on fractal shaped geometry of complementary split ring resonators
 XU  He-Xiu, WANG  Guang-Ming, ZHANG  Chen-Xin, LU  Ke
Missile Institute, Air Force Engineering University, Sanyuan 713800, China
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Abstract  Novel balanced composite right/left handed transmission line
(CRLH TL) with electrically small dimension of 0.074λg based on Minkowski fractal
shaped geometry of complementary split ring resonator (CSRRs) was proposed and studied.
Effects of the ring number of CSRRs, iteration order, horizontal and vertical iteration
factor to transmission characteristics of unbalanced CRLH TL were investigated through
academic calculation, constitutive parameters extraction approach, and EM as well as
electrical simulation. Thus working mechanism of fractal and multi-loop structure in
terms of miniaturization can be derived. For verification, novel balanced CRLH TL has been
fabricated and measured. Results obtained from simulation, circuit model and measurement
show good agreement which indicates: the -10 dB return loss bandwidth has been
significantly broadened (relative bandwidth of 113.7%) while also presents a lower
operating frequency. Good performance of the proposed structure exhibits promising
foreground in ultra wide band and miniaturization application．

Key words： fractals      CSRRs      CRLH TL      ultra wide band      miniaturization     
Published: 28 February 2011
CLC:  TN 811  
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XU He-Xiu
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LU Ke-
Cite this article:

XU He-Xiu, WANG Guang-Ming, ZHANG Chen-Xin, LU Ke. Novel design of composite right/left handed transmission line based on fractal shaped geometry of complementary split ring resonators. Chinese Journal of Engineering Design, 2011, 18(1): 71-76.

URL:

https://www.zjujournals.com/gcsjxb/     OR     https://www.zjujournals.com/gcsjxb/Y2011/V18/I1/71


基于分形互补开口环谐振器的复合左右手传输线研究

提出了一种基于Minkowski分形互补开口环谐振器(CSRRs)的
电小平衡复合左右手传输线(CRLH TL)(单元尺寸为0.074λg)．采用理论计算、电磁仿真、等效
电路模型计算(电仿真)及有效介质参数提取相结合的方法研究了非平衡CRLH TL传输特性随CSRRs环数、
Minkowski环水平迭代因子、垂直迭代因子及迭代次数变化的影响,得出分形、多环结构实现小型化的作
用机理．对所设计的电小平衡CRLH TL进行加工测试．仿真、等效电路模型计算以及测试的结果吻合得
很好．结果表明与基于传统CSRRs加载的CRLH TL相比,所提出的CRLH TL带宽明显展宽,-10 dB回波损耗
相对带宽达到113.7%,具有更低的工作频率．展现了其在超宽带、小型化器件应用的广阔前景．

关键词： 分形,  互补开口环谐振器,  复合左右手传输线,  超宽带,  小型化 
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