基于哑铃型缺陷地结构的多频微带贴片天线设计  

Design of Multiband Microstrip Patch Antenna Based on Dumbbell Defected Ground Structure

作　　者：叶朝阳 YE Chaoyang(International School,Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]北京邮电大学国际学院,北京100876

出　　处：《无线电工程》2024年第3期704-710,共7页Radio Engineering

摘　　要：天线的多频带实现对提高无线通信的性能至关重要。通过加载哑铃型缺陷地结构(Dumbbell Defected Ground Structure,DB-DGS)和贴片刻蚀槽缝,设计了一款新型基于同轴馈电的三频段矩形微带贴片天线,可满足无线本地局域网(WLAN-2.45 GHz)、(WLAN-5.25 GHz)以及全球微波互联网(WiMAX-3.5GHz)的应用需要。天线的S11<-10 dB的回波损耗值分别为-20.8、-20.6、-24.0 dB,对应增益分别为2.8、2.2、3.1 dBi,实现了良好的阻抗匹配。引入哑铃型DGS的等效电路模型,对DGS和槽缝结构的主要参数进行仿真分析,可为天线开发设计人员拓宽思路。Multiband implementation of antennas is crucial for improving the performance of wireless communication.By loading Dumbbell Defected Ground Structure(DB-DGS)and etching slots on the patch,a novel coaxial-fed triple band rectangular microstrip patch antenna is designed,which meets the needs of applications for Wireless Local Area Network(WLAN-2.45 GHz),(WLAN-5.25 GHz)and Worldwide interoperability for Microwave Access(WiMAX-3.5 GHz).The return loss values of the antenna for S 11<-10 dB are-20.8,-20.6,and-24.0 dB,respectively,with corresponding gains of 2.8,2.2,and 3.1 dBi,and good impedance matching is achieved.The equivalent circuit model of dumbbell DGS is introduced and simulation analysis is implemented on the main parameters of the DGS and slot structure,which can broaden the thinking for antenna developers and designer.

关 键 词：多频带 哑铃型缺陷地结构 微带贴片天线 槽缝 

分 类 号：TN82[电子电信—信息与通信工程]