低RCS宽带磁电偶极子贴片天线设计  

Low Radar Cross Section and Broadband Magneto-electric Dipole Patch Antenna

作　　者：张晨[1] 曹祥玉[1] 高军[1] 李思佳[1] 黄河[2] 

机构地区：[1]空军工程大学信息与导航学院,西安710077 [2]西安通信学院,西安710106

出　　处：《电子与信息学报》2016年第4期1012-1016,共5页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(61271100;61471389;61501494);陕西省自然科学基础研究计划项目(2012JM8003)~~

摘　　要：该文设计了一种低雷达散射截面（RCS）的宽带磁电偶极子贴片天线,其中印刷在介质板上的金属贴片为电偶极子,3个金属过孔连接辐射贴片与金属地板构成磁偶极子。整个天线采用＂T＂型渐变馈电结构同时激励电偶极子与磁偶极子,天线的频带范围为7.81~13.65 GHz,覆盖了整个X波段。实测和仿真结果表明,通过在磁电偶极子贴片天线底面采用开槽技术并优化开槽的形状、大小、位置等变量,在天线工作频带范围内实现了RCS的减缩,最大缩减量达到了17.9 d B,同时天线保持了增益稳定不变,E面、H面方向图一致的特性。A low Radar Cross Section（RCS） and broadband Magneto-Electric（ME） dipole patch antenna from 7.81 GHz to 13.65 GHz covering the whole X band is designed and fabricated. Metal patches printed on the substrate form the electric dipoles, three metallic vias connected to the radiation patches and the metal ground account for the magnetic dipole radiation. The whole antenna is connected with a T-shaped feed structure which excites electric and magnetic dipoles simultaneously. Numerical and experimental results incident that the RCS of the ME dipole patch antenna can be reduced in the whole bandwidth which the largest value is up to 17.9 d B by cutting slots on the ground and optimizing the size, shape, position of the slots. Also, the antenna shows advanced performances such as stable gain and almost consistent pattern in E and H plane.

关 键 词：磁电偶极子天线 宽频带 开槽技术 低RCS 一致性 

分 类 号：TN82[电子电信—信息与通信工程]