摘要
采用近场口径积分算法结合三维电磁仿真软件(Computer Simulation Technology,CST)仿真软件分析了带有多层介质天线罩的平板缝隙阵列.用CST对天线罩内的缝隙阵列天线进行仿真分析得到每个缝隙中心点的电磁场分布,对天线罩部分分析采用近场口径积分法分析天线罩部分对平板缝隙阵的影响.通过对该混合方法计算出的带罩平板缝隙阵列天线结果与CST全波仿真结果进行对比来验证该方法的正确性,结果表明:两者吻合很好.由于采用CST软件提取缝隙阵口径场考虑了阵元之间的互耦,较传统的理想阵元模型更加准确.混合方法避免了全波算法解决电大尺寸多层介质天线罩分析过程中耗费计算资源大、时间长的缺点.
In this paper, the near field aperture integration （AI） method combined with computer simulation technology（CST） software is approached to analyze a slot array en- closed with multilayer dielectric radome. Firstly, the electromagnetic field of each slot center point is simulated by CST software. Then the AI method is utilized to analyze the impact of the radome to slot array radiation. This idea is validated by comparing simula- tion results of this mixture method with that of the CST full wave results. Very good a- greement is achieved. Because the coupling of the array is taken into account by CST simulation, the radiation property of the slot array with a radome is more accuracy than ideal array model. Moreover, the mixture method overcomes the shortages of long time and large memory source cost compared with full wave methods for analyzing electric large multilayer radome.
出处
《电波科学学报》
EI
CSCD
北大核心
2014年第4期616-620,共5页
Chinese Journal of Radio Science
基金
国防预研基金(9140A07010812DZ02081)
关键词
口径积分法
缝隙阵列天线
雷达罩
aperture integration method
slot antenna array
radome
