Analysis of antenna arrays with finite frequency selective surfaces

In this paper, a full-wave method based on the volume-surface integral equation is applied to analyze microstrip antenna arrays with finite FSS radome. The volume integral equation is applied to the dielectric region of the composite structure, while the surface integral equation is used on the conductive surface. The integral equations are solved using the method of moments (MoM), with the precorrected-FFT (P-FFT) method used to reduce the memory requirement and accelerate the matrix-vector products in the iterative solution of the equation. With this method, the effects of the FSS on the characteristics of the antenna can be accurately investigated.