考虑枕效应的网状可展开天线电性能预测

摘要

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 se-ries 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 un-der the influence of wire mesh leakage .Simulation results of a mesh deployable reflector validate the feasibility and effectiveness of the method .%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。