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新型舰载超短波宽带平面天线
引用本文:李晓林,李韩,熊烨,陈永良,陈聪.新型舰载超短波宽带平面天线[J].电波科学学报,2011(3):539-543.
作者姓名:李晓林  李韩  熊烨  陈永良  陈聪
作者单位:中国船舶重工集团公司第七二二研究所
基金项目:国防预研项目(No.1010108040201)
摘    要:设计出一种新型舰载超短波宽带天线,该天线采用平面非对称偶极子形式,上辐射面为椭圆拟合结构,下辐射面为指数渐变梯形结构。采用时域有限差分法(FDTD)计算了天线的输入阻抗和辐射方向图。在13.3∶1的频带内,天线的电压驻波比小于2.9,水平面方向图失真度小于3.8 dB,而天线高度仅为0.326λmax.理论值与实验结果进行了比较,两者吻合较好

关 键 词:宽频带  超短波  平面天线  FDTD

A novel shipborne V/UHF broadband plane antenna
LI Xiao-lin LI Han XIONG Ye CHEN Yong-liang CHEN Cong.A novel shipborne V/UHF broadband plane antenna[J].Chinese Journal of Radio Science,2011(3):539-543.
Authors:LI Xiao-lin LI Han XIONG Ye CHEN Yong-liang CHEN Cong
Institution:LI Xiao-lin LI Han XIONG Ye CHEN Yong-liang CHEN Cong(The 722 Research Institute of China Shipbuilding Industry Corporation,Wuhan Hubei 430079,China)
Abstract:A novel shipborne V/UHF broadband plane antenna is designed.The planar unsymmetrical dipoles are used for the antenna.The elliptical-fitting structure is adopted for upper radiator,and the exponentially graded ladder structure for lower radiator.The antenna input impedance and radiation pattern are calculated with finite differential time domain(FDTD) method.Within a bandwidth of 13.3∶1,the voltage standing wave ratio(VSWR) is less than 2.9,the pattern distortion factor in horizontal plane is less than 3.8dB,and the antenna height is only 0.326λmax.The theoretical values are compared with experimental results and both fit well.
Keywords:broadband  V/UHF  plane antenna  FDTD
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