Low side lobe pattern synthesis using projection method with genetic algorithm for truncated cone conformal phased arrays  

作　　者：Guoqi Zeng Siyin Li Yan Zhang Shanwei L 

机构地区：[1]UAV Research Academy,Beihang University [2]School of Electronic and Information Engineering,Beihang University

出　　处：《Journal of Systems Engineering and Electronics》2014年第4期554-559,共6页系统工程与电子技术（英文版）

基　　金：supported by the Fundamental Research Funds for the Central Universities(YWF-13D2-XX-13);the National High-tech Research and Development Program(863 Program)(2008AA121802)

摘　　要：A hybrid method for synthesizing antenna＇s three dimensional （3D） pattern is proposed to obtain the low sidelobe feature of truncated cone conformal phased arrays. In this method, the elements of truncated cone conformal phased arrays are projected to the tangent plane in one generatrix of the truncated cone. Then two dimensional （2D） Chebyshev amplitude distribution optimization is respectively used in two mutual vertical directions of the tangent plane. According to the location of the elements, the excitation current amplitude distribution of each element on the conformal structure is derived reversely, then the excitation current amplitude is further optimized by using the genetic algorithm （GA）. A truncated cone problem with 8x8 elements on it, and a 3D pattern desired side lobe level （SLL） up to 35 dB, is studied. By using the hybrid method, the optimal goal is accomplished with acceptable CPU time, which indicates that this hybrid method for the low sidelobe synthesis is feasible.A hybrid method for synthesizing antenna＇s three dimensional （3D） pattern is proposed to obtain the low sidelobe feature of truncated cone conformal phased arrays. In this method, the elements of truncated cone conformal phased arrays are projected to the tangent plane in one generatrix of the truncated cone. Then two dimensional （2D） Chebyshev amplitude distribution optimization is respectively used in two mutual vertical directions of the tangent plane. According to the location of the elements, the excitation current amplitude distribution of each element on the conformal structure is derived reversely, then the excitation current amplitude is further optimized by using the genetic algorithm （GA）. A truncated cone problem with 8x8 elements on it, and a 3D pattern desired side lobe level （SLL） up to 35 dB, is studied. By using the hybrid method, the optimal goal is accomplished with acceptable CPU time, which indicates that this hybrid method for the low sidelobe synthesis is feasible.

关 键 词：conformal phased array low side lobe pattern synthe-sis projection method genetic algorithm optimization. 

分 类 号：TN820[电子电信—信息与通信工程]