一种高增益宽带窄边频率扫描天线设计  

A Design of High Gain Broadband Narrow-edge Frequency Scanning Antenna

作　　者：王培隆 曹文权 WANG Peilong;CAO Wenquan(The Army Engineering University of PLA,Nanjing Jiangsu 210007,China)

机构地区：[1]中国人民解放军陆军工程大学,江苏南京210007

出　　处：《通信技术》2022年第11期1499-1506,共8页Communications Technology

基　　金：国防科技创新研究项目基础加强计划“基于新型人工电磁结构的高性能波束扫描天线技术研究”(KYTYJCJC2001)。

摘　　要：通过引入复合左右手结构,设计实现了一种高增益宽带窄边频率扫描天线。通过引入宽带Vivaldi天线作为天线阵元,实现了天线的宽带化,并使用复合左右手结构传输线对单元进行馈电,提高了扫描范围。分析了不同单元数量对天线扫描性能的影响,并对天线在不同单元数量下的电场分布进行了分析,确定了合理的单元数量。该天线阻抗匹配带宽为12~17.53 GHz,波束扫描角度为42°,最高增益为16.54 dBi。对天线实物进行了制作,在微波暗室中进行了测试,实测结果与仿真结果吻合度较好。由于该天线具有低剖面、高增益、带宽宽、结构简单等特点,在舰载和机载设备中有一定应用前景。In this paper, a high gain broadband narrow-edge frequency scanning antenna is designed and implemented by introducing a composite right/left-handed transmission line applied into antenna. The impedance matching band is broaden by using coplanar Vivaldi antenna as array element and the scanning range is improved by using CRLH line as feeding line. The impact on scanning feature of the antenna of different number of elements is analyzed, and the electric field distribution is displayed in order to decide the appropriate number of array elements. The impedance matching bandwidth is 12~17.53 GHz, the scanning range is 42 °, and the maximum peak gain is 16.54 dBi. The fabricated antenna is tested in microwave anechoic chamber. Measured results are in good agreement with the simulated ones. The designed antenna indicates potential use in carrier-borne and airborne wireless devices because of its advantages of low profile, high gain, broadband and simple structure.

关 键 词：高增益 复合左右手结构 宽带 窄边频扫天线 

分 类 号：TN820[电子电信—信息与通信工程]