一种紧凑结构的宽频带圆极化微带天线  

Broadband circularly polarized microstrip antenna with compact configuration

作　　者：丁卫平[1] 李洪彬[1] 余同彬[1] 曹文权[1] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007

出　　处：《解放军理工大学学报（自然科学版）》2011年第6期559-563,共5页Journal of PLA University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60872046)

摘　　要：为了解决层叠结构微带天线剖面高、结构复杂的问题,首次将支节匹配技术用于层叠结构的微带天线中,实现了更佳的阻抗匹配,且降低了天线高度,并将馈电网络与激励贴片做于同一层,使得天线结构简单紧凑。所设计天线的高度为0.053λ,比传统的层叠结构微带天线降低了近50%,同时实现了29.2%的阻抗带宽、32.3%的3dB轴比带宽、11.3%的1dB增益带宽。加工制作了相应的微带天线。结果表明,该天线结构紧凑、频带宽、增益高,且天线底板有足够的空间嵌入移相网络,在相控阵中具有良好的应用前景。To solve the problems of the stacked microstrip antennas that have high profile and complicated structure,the first time stub-tuning matching technique was used in the stacked microstrip antenna,a better impedance bandwidth realized and the height of the antenna reduced.And the feeding network and the driven patch were designed on the same substrate to achieve simple structure.The antenna has a height of 0.053λ which has been reduced by 50% compared with the general stacked microstrip antenna,achieving a impedance bandwidth of 29.2%,a 3dB axial ratio bandwidth of 32.2%,and a 1dB gain bandwidth of 11.3%.The corresponding antenna was fabricated.The results indicate that the antenna has compact configuration,broad bandwidth and high gain.What＇s more,the ground plane has enough space for the phase shifting network,enabling the proposed antenna to enjoy good advantage in the phased array application.

关 键 词：层叠结构 宽频带 微带天线 

分 类 号：TN82[电子电信—信息与通信工程]