北京航空航天大学学报 ›› 2008, Vol. 34 ›› Issue (8): 904-906.

• 论文 • 上一篇    下一篇

不完整带隙结构在微带天线中的应用

吕善伟,赵晓纪,冯文全,张江林   

  1. 北京航空航天大学 电子信息工程学院, 北京 100191
  • 收稿日期:2007-07-19 出版日期:2008-08-31 发布日期:2010-09-17
  • 作者简介:吕善伟(1937-),男,辽宁大连人,教授,lueshw@buaa.edu.cn.
  • 基金资助:

    国家863计划资助项目(2006AA12A110)

Application of new defected EBG structure in microstrip antenna

Lü Shanwei, Zhao Xiaoji, Feng Wenquan, Zhang Jianglin   

  1. School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China
  • Received:2007-07-19 Online:2008-08-31 Published:2010-09-17

摘要: 为了使微带贴片天线满足导航和通信等应用设计的某些特殊要求,提出了一种可改善微带天线性能的不完整电磁带隙结构:首先在普通的切去两个对角的方形圆极化贴片天线周围一定距离处附加电磁带隙结构,使谐振频率增加而带宽变化不大;然后,在此基础上又将接地板外侧四边切去窄方形金属层,从而形成方形环介质层.仿真结果表明:新型结构可提高传统贴片天线的低仰角增益和总增益,同时可使传统微带天线较好地实现双频工作.

Abstract: In order to meet some specific application requirements for microstrip patch antenna in navigation and communication project, a novel defected electromagnetic band-gap (EBG) and ground structure designed for improving the performance of traditional microstrip patch antenna was presented. For building this structure, several EBG elements were firstly placed near a usual circularly polarized square microstrip patch with two opposite corners cut. This can enhance the resonance frequency and change only slightly the bandwidth of the patch antenna. Then a thin square metal layer was cut off from four sides of the ground plane to forms a square loop of dielectric layer. The results of numerical simulation show that the new structure is able to improve the performance of antenna gain including total and low elevation situation, and the microstrip patch antenna equipped with this structure can be treated as a dual-frequency antenna.

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