红外与毫米波学报2011，Vol.30Issue(5)：390-395,457,7.
基于分形复合左右手传输线的小型化微带双工器设计
Novel design of compact microstrip diplexer based on fractal-shaped composite right/left handed transmission line
摘要
Abstract
A new type of miniaturized microstrip diplexer is initially proposed based on the combined technology of fractal geometry and composite right/left handed transmission line (CRLH TL).The diplexer which is synthesized by combining two 3-port networks operating at a pair of different frequencies consists of lumped elements for the left handed (LH) part and Sierpinski-shaped microstrip lines (MLs) for the right handed (RH) part.Sierpinski curve allows miniaturized dimensions of the diplexer mainly attributing to its strong space-filling capability.CRLH TL enables dual-band design due to its unique hyperbolic-linear dispersion relation.For demonstration,three CRLH diplexers using Siepinski curves of different iteration orders are successfully designed.For verification,a CRLH diplexer sample by adopting a Sierpinski curve of second order was fabricated and measured.Consistent numerical and experimental results have confirmed the design.The fabricated diplexer operating at 0.9 and 1.8 GHz,respectively achieves good in-band performances and a maximal 76.3% size reduction compared to the conventional CRLH diplexer without fractal geometry.关键词
分形/空间填充特性/复合左右手传输线/双工器/双频/双曲色散关系Key words
Fractal/ Space-filling property/ Composite right/left-handed transmission line/ Diplexer/ Dual-band/ Hyperbolic-linear dispersion relation分类
信息技术与安全科学引用本文复制引用
许河秀,王光明,张晨新,梁建刚..基于分形复合左右手传输线的小型化微带双工器设计[J].红外与毫米波学报,2011,30(5):390-395,457,7.基金项目
Foundation item:Supported by National Natural Science Foundation of China (NO.60971118) and 973 Project of Science and Technology Ministry of China (NO.2009CB613306) （NO.60971118）
