系统工程与电子技术

• 电子技术 •    下一篇

基于单元位置误差的有源相控阵天线辐射和散射性能综合分析

王从思1,2,王伟锋1,王伟1,康明魁1,段宝岩1,刘鑫1,韩如冰1   

  1. 1. 西安电子科技大学电子装备结构设计教育部重点实验室, 陕西 西安 710071;2. 美国加州大学伯克利分校机械工程系, 伯克利, CA 94720
  • 出版日期:2014-09-25 发布日期:2010-01-03

Integrated analysis of radiation and scattering performances of active phased array antennas with element position errors

WANG Cong-si1,2,WANG Wei-feng1,WANG Wei1, KANG Ming-kui1,DUAN Bao-yan1,LIU Xin1,HAN Ru-bing1   

  1. 1. Key Laboratory of Electronic Equipment Structure Design, Ministry of Education, Xidian University, Xi’an 710071, China; 2. Department of Mechanical Engineering,
    University of California, Berkeley, CA 94720, USA
  • Online:2014-09-25 Published:2010-01-03

摘要:

针对有源相控阵天线雷达散射截面积(radar cross section, RCS)计算复杂,及天线单元位置误差对其RCS的影响难以估计的问题,基于天线单元的相位误差分析,建立了有源相控阵天线的结构与散射阵因子耦合模型,极大简化了有源相控阵天线RCS计算的复杂度,并在此基础上研究了天线单元位置误差对增益及RCS的综合影响。结果表明,合理降低天线单元的位置精度可以抑制有源相控阵天线的RCS。工程人员可基于此权衡辐射和散射性能,适当放宽有源相控阵天线加工及安装公差,在保证天线综合性能前提下有效减轻加工难度,降低加工成本。

Abstract:

To reduce the computational complexity of antenna radar cross section (RCS), and estimate the effects of element position errors on antenna RCS, a novel structural and scattering array factor (SAF) coupling model of active phased array antennas is developed. This model is derived by the element phase errors, which can greatly simplify the computational complexity of the array antenna RCS issues. And the integrated influence of the antenna element position errors on antenna gain and RCS is analyzed. The simulation results verify that an obvious RCS reduction of active phased array antennas could be implemented by reasonable enlargement of position tolerance of the array elements. On account of the coupling model, the radiation and scattering performances of active phased array antennas could be balanced by engineering to relax array antenna processing and install tolerances. With the premise of synthetic antenna performance ensurance, the difficulty of processing and development cost could be reduced.