【摘要】 提出了一种预测网状可展开天线电性能的数值计算方法.针对网状可展开天线采用三角形拼合的这一特点,首先从结构力学出发确定天线枕效应变形,然后采用巴斯卡图插值进行面片网格划分,给出了网格划分准则,其次通过最佳吻合抛物面确定最优馈源的位置和指向,最后考虑丝网的电磁漏射对网状天线进行电性能预测.通过仿真算例验证了该方法的可行性和有效性.更多还原

【Abstract】 A numerical method for electromagnetic( EM) performance prediction for mesh deployable antennas considering pillow deformation is proposed in this article. Accounting for the characteristics of mesh reflecting surface which is faceted by a series of triangles,the amount of pillow deformation is computed firstly based on the antenna structural parameters; Secondly,with the Pascal graph interpolation,the meshing of the surface facet is accomplished with a given criterion;The position and orientation of the optimized feed are both obtained using the traditional best-fit paraboloid( BFP) method;Finally,the EM performance is predicted under the influence of wire mesh leakage. Simulation results of a mesh deployable reflector validate the feasibility and effectiveness of the method.更多还原