Analysis of curved frequency selective surfaces using the hybrid volume-surface integral equation approach

The hybrid volume-surface integral equation (VSIE) approach has been applied to investigate the curved FSS with the dielectric substrates of finite extent. The scattering RCS of a curved structure and a planar finite periodic structure have been presented. An important advantage of the VSIE algorithm is that it can be used to simulate the finite and arbitrary curved structure. When the finite structure size increases, the multilevel fast multipole algorithm can be applied to reduce the computational complexity.