The law of reflection from strips

Previous authors have pointed out deviations from the law of reflection for physical optics (PO) calculations when the electric field is parallel to the edge of the strip or plate. In the present work, the author shows the cause of the deviation and compares PO and integral equation (IE) results for bistatic scattering from perfectly conducting strips. The PO and IE results indicate that the law of reflection holds well for E-polarized incident fields. However, significant deviations occur when the incident field is H-polarized. The more the strip gets smaller and the angle of incidence approaches grazing, the more the law of reflection ceases to apply.<>