一种低轮廓半模基片集成波导圆极化天线  

Low-profile circularly polarized antenna using the half-mode circular substrate integrated waveguide technique

作　　者：张叶枫 朱永忠[1] 刘明飞 芦鸿雁[1] 

机构地区：[1]武警工程大学信息工程系,陕西西安710086

出　　处：《西安电子科技大学学报》2017年第6期169-174,共6页Journal of Xidian University

基　　金：国家自然科学基金资助项目(61302051;61771490);陕西省自然科学基金资助项目(2012JQ8026);武警工程大学基础研究资助项目(WJY201606)

摘　　要：为减小基片集成波导圆极化天线面积,设计了一种低轮廓半模基片集成波导圆极化天线.通过顶面加载不等长交叉缝隙,天线获得左旋圆极化性能.此外,设计在中间层的加载枝节带状线馈电结构以及在地板的S形缝隙,使得天线获得更好的阻抗匹配.实测结果表明,此天线阻抗带宽为7.3%(S11≤-10dB),轴比带宽为1.6%(AR≤3dB),天线的最大增益为6.2dBi.A technique to design a compact half mode substrate integrated circular cavity(HMSICC)cavity backed antenna is presented.The proposed antenna achieves left-handed circularly polarized(LHCP)using a crossed slot.The feeding strip-line loaded stub in the middle metallization layer and the S-shaped slot in the bottom metallization layer can achieve a better impedance match.Measured results show that the prototype achieves a bandwidth of 7.3%for 10 dB return loss and that the axial ratio(AR)bandwidth is at least 1.6%with the maximum gain of 6.2 dBi.

关 键 词：背腔 圆极化 半模基片集成圆腔 交叉缝隙 

分 类 号：TN82[电子电信—信息与通信工程]