知识与财富的链接
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,通过控制该馈线中主、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动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.
