【作者】 周东； 孙玉发； 胡少启； 杨明； 刘伟伟；

【Author】 ZHOU Dong;SUN Yufa;HU Shaoqi;YANG Ming;LIU Weiwei;Key Lab of Intelligent Computing & Signal Processing,Ministry of Education,Anhui University;

【机构】 安徽大学计算智能与信号处理教育部重点实验室；

【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臵的开口谐振环,并在地板中心嵌入一个缺陷地结构,在没有增加天线尺寸的情况下,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60.8%和48.7%。该天线具有带宽宽,尺寸小,容易加工等特点,具有良好的工程实用性。更多还原

【Abstract】 In order to improve the performance of the bandwidths, a novel method for broadening bandwidths of 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 without enlarging the antenna size 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 60.8% and 48.7% respectively. It has the advantages of wide bandwidths, small size, easy manufacturing and good prospects for the applications.更多还原