摘要
设计了一款5.5 GHz频段基于超表面的宽带方向图分集天线,可应用于单频段体表/体外双通信模式。通过对超表面天线进行特征模分析,选择合适的定向和全向特征模式,修正超表面结构,抑制高次模,设计合适的馈电结构将其激励出来。最后仿真和测试的结果表明,端口1具有全向辐射特性,可用于体表通信模式;端口2具有定向辐射特性,可用于体外通信模式。天线两种模式的工作带宽为23.6%(4.98 GHz~6.25 GHz),带内隔离度高于30 dB。
A 5.5 GHz band wideband directional pattern diversity antenna based on metasurface is designed,which can be used in single band on-/off-body dual communication mode.By analyzing the characteristic mode of the metasurface antenna,the appropriate directional and omnidirectional characteristic mode is selected,the metasurface structure is modified,the higher-order mode is suppressed,and a suitable feed structure is designed to excite it.Finally,the simulation and test results show that port 1 has omnidirectional radiation characteristics and can be used in on-body communication mode,and port 2 has directional radiation characteristics and can be used in off-body communication mode.The working bandwidth of the two modes of the antenna is 23.6%(4.98 GHz~6.25 GHz),and the in-band isolation is higher than 30 dB.
作者
沈飘飘
肖如奇
刘巾军
杨国
齐世山
Shen Piaopiao;Xiao Ruqi;Liu Jinjun;Yang Guo;Qi Shishan(School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Representative Office in Nanjing District of PLA Army Equipment Department,Nanjing 210007,China)
出处
《电子技术应用》
2023年第9期14-20,共7页
Application of Electronic Technique
基金
国家自然科学基金(62271257)。
关键词
可穿戴天线
特征模分析
超表面
体表通信
体外通信
wearable antenna
characteristic mode analysis
metasurface
on-body communication
off-body communication
