Diffraction properties of a bandpass grid

Abstract

We describe a rigorous formulation for the diffraction by perfectly conducting grids of finite thickness with cross-shaped apertures. This formulation is employed to study the use of these grids as bandpass filters in transmission. We show that they provide excellent bandpass characteristics, which can be varied by adjusting the grid geometry. These bandpass properties are shown to persist out to high angles of incidence for TM polarized radiation. Show more