基于复合左右手传输线的圆极化天线  

A Circularly Polarized Antenna Based on CRLH-TL

作　　者：吴曼迪 周瑞城 李宗敏 王亮 孙绪保 WU Mandi;ZHOU Ruicheng;LI Zongmin;WANG Liang;SUN Xubao(College of Electronic and Information Engineering,Shandong University of Science and Technology,Qingdao,Shandong,266590,CHN)

机构地区：[1]山东科技大学电子信息工程学院,山东青岛266590

出　　处：《固体电子学研究与进展》2020年第2期122-126,共5页Research & Progress of SSE

摘　　要：根据复合左右手传输线(CRLH-TL)基本原理,设计了一种带有CRLH-TL结构的圆极化天线。通过双螺旋槽结构和底部的矩形金属条来引入左手模式,利用割除正面辐射贴片上的两个矩形的方法,产生圆极化辐射。设计并制作的微带天线整体尺寸为50 mm×40 mm×16 mm,天线的实测阻抗带宽(<-10 dB)为32.4%(2.38~3.30 GHz),实测轴比带宽(<3 dB)为6.90%(2.66~2.85 GHz),并在该工作频段下实现了相对磁导率和相对介电常数双负的左手模式特性。According to the basic principle of compound right/left-hand transmission line(CRLHTL),a circularly polarized antenna with CRLH-TL structure was proposed.The left hand mode was introduced by the double spiral slot structure and the rectangular metal strip at the bottom.By removing the two rectangles from the front radiation patch,a circular polarization radiation was made.The overall size of the patch is 50 mm×40 mm×16 mm,the measured impedance bandwidth(<-10 dB)is 32.4%(2.38~3.30 GHz),and the measured axial ratio(AR)bandwidth(<3 dB)is 6.90%(2.66~2.85 GHz).The negative relative permittivity(εr)and negative relative permeability(μr)of this antenna have been achieved.

关 键 词：复合左右手传输线 圆极化天线 小型化天线 左手材料 

分 类 号：TN822.4[电子电信—信息与通信工程]