基于电谐振器加载的5G多频段小型化准全向天线

5G multi-band miniaturized quasi-omnidirectional antenna based on ELC resonator loading

提出了一种偏心馈电基于电谐振(electric-LC,ELC)结构加载的5G多频段小型化准全向天线,利用分支贴片实现了多频段.通过缺陷地结构(defective ground structure,DGS)和梳状结构,调节天线的阻抗匹配,结合弯折结构和ELC结构,实现了良好的全向辐射特性.测试了天线S参数、增益和方向图,结果表明:|S11|≤-10 dB的阻抗带宽分别为0.82~0.94 GHz、1.76~3.63 GHz和4.80~4.90 GHz,覆盖了移动通信2G、3G、4G、5G等频段.本文所提出的天线具有结构紧凑、频带宽、准全向辐射等特点,适用于移动通信终端设备.

In this paper,a 5G communication multi-band miniaturized quasi-omnidirectional antenna based on electric-LC(ELC)structure loading is proposed.Multi-band is realized by using branch patches.The defective ground structure(DGS)and comb-shaped slots structure are used to optimize the impedance matching.The meandered strip structure and ELC structure is loaded to achieve good omnidirectional radiation.The antenna S parameters,gain and pattern are tested.The measured results show that the|S|≤-10 dB impedance bandwidth is 0.82-0.94 GHz,1.76-3.63GHz and 4.80-4.90 GHz,respectively,covering mobile communication 2G,3G,4G,5G and other frequency bands.The antenna proposed in this paper has the advantages of small size,wide bandwidths,quasi-omnidirectional radiation,etc.,and is suitable for wireless communication terminal equipment.