一种带宽展宽的圆极化微带天线的设计  

Design of circularly polarized microstrip antenna with bandwidth broadening

作　　者：周东[1] 孙玉发[1] 胡少启 杨明[1] 刘伟伟[1] 

机构地区：[1]安徽大学计算智能与信号处理教育部重点实验室,安徽合肥230039

出　　处：《中国科学技术大学学报》2015年第7期582-587,共6页JUSTC

基　　金：国家自然科学基金(61172020)资助

摘　　要：为了改善微带天线的带宽性能,提出了一种新颖的展宽圆极化微带天线带宽的设计方法.该方法使用同轴中心馈电方式并加载微带匹配段实现阻抗匹配,贴片四周加载四个连续旋转放置的开口谐振环,并在地板中心嵌入一个缺陷地结构,实现了微带天线阻抗带宽和轴比带宽的展宽.实验结果表明,阻抗带宽和轴比带宽分别提高了68.2%和56.6%.In order to improve the performance of the bandwidth of the microstrip antenna ,a novel method for broadening bandwidth of the circularly polarized microstrip antenna is presented . Coaxial feeding loaded microstrip matching section is used to achieve impedance matching . The impedance and the axialratio bandwidths are improved by placing four sequentially rotated split‐ring resonators around the patch of the antenna and embedding a defeated ground structure on the center of the ground plane . Experimental results show that the impedance and the axialratio bandwidths of the antenna are increased by 68 .2% and 56 .6% ,respectively .

关 键 词：微带天线 圆极化 开口谐振环 缺陷地结构 带宽展宽 

分 类 号：TN822.8[电子电信—信息与通信工程]