Modeling of a finite-size thick metallic waveguide FSS under oblique plane wave incidence using Scale Changing Technique

In this paper, the SCT is applied for the global electromagnetic simulation of a finite-size and thick waveguidecell FSS illuminated by an oblique incident plane wave. Preliminary results under normal incident plane wave have been presented by the authors in. The FSS plays a key role in many antenna systems for modern fixed and mobile communication services. FSS are used in various applications as spatial filters, allowing transmission at certain frequencies and reflection at others. Typical applications include radomes, frequency separation in quasi-optical beam splitters, Cassegrain reflectors, and phase screens for beam steering.