一种带宽展宽的小型化GPS天线  

A miniaturized GPS antenna with bandwidth broadening

作　　者：孙玉发[1] 吴志锋 

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：《安徽大学学报（自然科学版）》2018年第5期74-86,共13页Journal of Anhui University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61172020)

摘　　要：为了改善微带天线带宽性能和减小天线尺寸,提出一种能够同时实现带宽展宽和小型化的设计方案.该方案将垂直正交的I型超材料单元与4个寄生开口谐振环相结合的结构置于贴片和地板间,并在地板嵌入一个缺陷结构.与原始天线相比,设计的天线辐射贴片面积减少了45.4%,阻抗带宽展宽了46%,同时保持了良好的增益.实物测试结果与仿真结果吻合较好.In order to improve the bandwidth performance of the microstrip antenna and reduce the size,an antenna design scheme for broadening bandwidth and miniaturization was presented.In this scheme,a novel structure of the vertical orthogonal I metamaterial units was combined with four split-ring resonators between the patch and ground and a defeated ground structure was embedded on the ground.Compared with the prototype antenna,the area of the designed antenna radiation patch was decreased by 45.4%,the impedance bandwidth was expanded by 46% while favorable gain was maintained.The measured results and the simulated results were in agreement with each other.

关 键 词：微带天线 圆极化 小型化 超材料 宽带 

分 类 号：TN822[电子电信—信息与通信工程]