摘要
提出了一种新的左手微带传输线结构.基于这种结构,构建了左-右手混合式天线阵微带馈线,通过控制该馈线中左、右手传输线的长度,可以在特定长度传输线上获得零相位延迟.将此种传输线作为馈线应用到串联馈电的毫米波微带天线阵中.结果表明,利用此种传输线馈电和传统右手传输线馈电相比,可以避免由传统右手馈线在天线激励点之间引入的相位差,从而克服了固有的天线波束偏移.
A novel left-handed microstrip transmission line （LH-TL） structure was presented. Based on this structure, feed lines with composite right/left-handed transmission line （CRLH-TL） structure for microstrip arrays were also presented. By controlling the lengths of LH-TL. and RH-TL parts in CRLH-TL, naught phase shifts of the transmission line can be obtained. As an application, the CRLH-TL has been used as feed line in series fed millimeter wave microstrip arrays. Numerical results show that, by means of the CRLH-TL, the insertion phase shifts at excited ports of microstrip elements can be eliminated. As a result, the inherent beam shifts disappear.
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
2005年第5期341-343,347,共4页
Journal of Infrared and Millimeter Waves
基金
国家自然科学基金资助项目(60171019和60371010)
关键词
左手传输线
左-右手混合传输线
毫米液天线
微带阵列
left-handed transmission line （LH-TL）
composite fight/left-handed transmission line （CRLH-TL）
millimeter-wave antenna
microstrip array
