A wideband dual-polarized slot-coupled stacked microstrip antenna with very high isolation and low cross-polarization is presented. To improve isolation between two poiarization ports, the stacked patches are excited ...A wideband dual-polarized slot-coupled stacked microstrip antenna with very high isolation and low cross-polarization is presented. To improve isolation between two poiarization ports, the stacked patches are excited by an open-ended and a T-shaped microstrip lines both via two H-shaped slots placed in a ＂T＂ configuration. The measured isolation is better than 40.5 dB over the bandwidth from 8.8 to 9.8 GHz with cross-polarization level less than - 28.5 dB. The measured VSWR ≤ 2 bandwidths reach 20.7 96 and 19.196 at the verrical and horizontal polarization ports, respectively. This antenna is suitable to be used as array elements in spacebome synthetic aperture radars （SAR） and active phased array radars.展开更多
基于基片集成波导(SIW)结构,提出了一种具有高端口隔离度的双极化缝隙天线。天线正面蚀刻一个直径约为λ0/2的环型缝隙作为辐射源,工作于圆形SIW谐振腔的主模TM11;背面中心位置蚀刻微带交指电容,使SIW腔体电尺寸减小了约7%;采用一对正...基于基片集成波导(SIW)结构,提出了一种具有高端口隔离度的双极化缝隙天线。天线正面蚀刻一个直径约为λ0/2的环型缝隙作为辐射源,工作于圆形SIW谐振腔的主模TM11;背面中心位置蚀刻微带交指电容,使SIW腔体电尺寸减小了约7%;采用一对正交微带线分别由两个端口为天线馈电。所设计的天线谐振在5.8 GHz频段,–10 d B阻抗带宽为1.7%,最大增益为8.5 d Bi,端口隔离度高于35 d B。测试结果表明,该双极化天线具有高隔离度、高增益的特点,可用于MIMO等无线通信系统中。展开更多
文摘A wideband dual-polarized slot-coupled stacked microstrip antenna with very high isolation and low cross-polarization is presented. To improve isolation between two poiarization ports, the stacked patches are excited by an open-ended and a T-shaped microstrip lines both via two H-shaped slots placed in a ＂T＂ configuration. The measured isolation is better than 40.5 dB over the bandwidth from 8.8 to 9.8 GHz with cross-polarization level less than - 28.5 dB. The measured VSWR ≤ 2 bandwidths reach 20.7 96 and 19.196 at the verrical and horizontal polarization ports, respectively. This antenna is suitable to be used as array elements in spacebome synthetic aperture radars （SAR） and active phased array radars.
文摘基于基片集成波导(SIW)结构,提出了一种具有高端口隔离度的双极化缝隙天线。天线正面蚀刻一个直径约为λ0/2的环型缝隙作为辐射源,工作于圆形SIW谐振腔的主模TM11;背面中心位置蚀刻微带交指电容,使SIW腔体电尺寸减小了约7%;采用一对正交微带线分别由两个端口为天线馈电。所设计的天线谐振在5.8 GHz频段,–10 d B阻抗带宽为1.7%,最大增益为8.5 d Bi,端口隔离度高于35 d B。测试结果表明,该双极化天线具有高隔离度、高增益的特点,可用于MIMO等无线通信系统中。
