摘要
设计了一种基于光子带隙(PBG)高阻表面的宽带双极化微带天线。将PBG高阻表面地板应用到设计的缝隙耦合微带天线上,实现了C波段阻抗带宽为22%(VSWR<2)的宽带双极化天线单元。仿真结果表明,与加金属地板的情况相比较,设计得到的PBG高阻表面在减缩剖面的同时,改善了天线的阻抗带宽、增益、端口隔离度和交叉极化,其中端口隔离度最大可以提高约8 dB、轴向交叉极化可以提高约4 dB。
A wideband dual-polarized microstrip antenna based on PBG high resistance surface structure has been designed.The PBG structure is applied to a gap-coupling microstrip antenna to realize a bandwidth of 22% for the C-band.The simulation results show that the PBG high resistance surface structure plays an important role in reducing the profile and improving the impedance bandwidth and gain of the antenna as well as improving the polarization isolation and cross polarization effectively compared with the metal ground.The polarization isolation and cross polarization can be improved by 8 dB and 4 dB respectively in the bandwidth range.
出处
《电子器件》
CAS
北大核心
2013年第2期158-162,共5页
Chinese Journal of Electron Devices
关键词
微带天线
光子带隙
宽带双极化
极化隔离度
交叉极化
microstrip antenna
PBG
wideband dual-polarized
cross polarization
polarization isolation
