一种小型化超宽带复合左右手传输线的设计  

The Design of a Diminutive and Ultra-wide Band Composite Right/left-handed Transmission Line

作　　者：傅关新[1] 竹有章[1] 孙超[1] 孙振[1] 

机构地区：[1]第二炮兵工程学院,西安710025

出　　处：《科学技术与工程》2011年第29期7105-7107,7117,共4页Science Technology and Engineering

摘　　要：提出了一种小型化超宽带复合左右手传输线(CRLH-TL)结构。在传统微带型复合左右手传输线的基础上,在交指电容的两边分别设计一个接地短截线,形成了一种对称的π型复合左右手传输线结构。仿真表明,该CRLH-TL结构的3 dB带宽为(4.5～13.5)GHz,相对带宽为100%,通带内回波损耗小于-10 dB,插入损耗大于-0.5 dB,用相同的单元结构级联后具有较好的滤波性能。新的CRLH-TL的单元尺寸约为中心波导波长的1/6,有利于实现结构的小型化。A diminutive and ultra-wide band（UWB） CRLH-TL is presented.Based on traditional microstrip CRLH-TL,a short stub is designed on each side of the intersectant capacitance,to form a symmetrical π-structure CRLH-TL.Simulation results show that this CRLH-TL 3 dB band width is in（4.5~13.5） GHz,the relative bandwidth is 100%,the return loss is less than-10 dB and the insertion loss is more than-0.5 dB in the 3 dB band width.It is a good filter after being simply linked with several same cells.The dimension of the proposed CRLH-TL cell is approximately 1/6 of the guide wavelength at the center frequency,making miniaturization realizable.

关 键 词：复合左右手传输线 超带宽 小型化 

分 类 号：TN253[电子电信—物理电子学]