嵌入超材料埋藏介质贴片引向天线设计  

Buried Dielectric Patch Yagi Antenna with Embedded Metamaterials Structure

作　　者：曹新宇[1,2] 张金玲[1] 杨虹蓁[2] 温舒桦[1] 李厚荣[1] 

机构地区：[1]北京邮电大学电子工程学院,北京100876 [2]北华航天工业学院电子与控制工程学院,河北廊坊065000

出　　处：《北京邮电大学学报》2016年第2期58-62,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(61171051;50971094);河北省科技厅计划项目(15210410);河北省科技厅重点项目(14211701D);河北省教育厅高等学校科学技术研究项目(QN2016249)

摘　　要：设计了一种埋藏介质贴片引向天线,工作在2.4 GHz的无线工业、科学、医学频段,该天线采用金属片与介质板层叠安放,辐射方向垂直于天线表面,属于端射天线.嵌入了超材料结构,剖面结构尺寸缩小为原天线的69%.同时,天线匹配性能有所提升,辐射特性优于原天线.采用有限元全波仿真技术对天线的设计进行了分析和优化,改进后的天线在2.4 GHz频点回波损耗下降了3 d B,E面和H面辐射场强提升了1 d Bi,实现了天线的小型化和灵活性.最后通过时域有限积分法对辐射性能进行了验证.Working in the 2. 4 GHz wireless industrial scientific medical（ ISM） band,a buried dielectric patch Yagi antenna was designed. Antenna metal sheet and medium plate is placed alternately and radiate perpendicular to the antenna surface,belonged to the end-fire antenna. The antenna is improved by embedded metamaterial structure. By using the phase compensation characteristics of metamaterial,the section size shrinks to 69% of the original antenna structure,at the same time,the matching and radiation performance is better than that of original antenna. A full-wave finite element simulation method was adopted to design and analyze the antenna,and the improved antenna return loss is decreased by 3 d B in2. 4 GHz frequency,and then E and H-plane radiation field intensity is got 1 d Bi,which achieves the small size and flexibility demand of the antenna. Finally,the time domain finite integration method verifies radiation performance.

关 键 词：超材料 引向天线 埋藏介质贴片 后向波 

分 类 号：TN823.17[电子电信—信息与通信工程]