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.