In an empty halfspace a point source emits electromagnetic waves of fixed frequency and arbitrary polarization. The fields reflected by an imperfectly conducting plane, characterized by a constant, isotropic surface impedance, are determined by means of the geometrical optics approximation. An optimization method is used to compute the surface impedance, which minimizes a given function of the e.m. fields (e.g. the average energy density) at a given observation point. The properties of the functions to be minimized are studied and a set of numerical results is presented and discussed
Bridges, T., Chen, G., Crosta, G. (1987). Minimizing the reflection of electromagnetic waves by surface impedance. WAVE MOTION, 9(1), 19-36 [10.1016/0165-2125(87)90037-0].
Minimizing the reflection of electromagnetic waves by surface impedance
CROSTA, GIOVANNI FRANCO FILIPPO
1987
Abstract
In an empty halfspace a point source emits electromagnetic waves of fixed frequency and arbitrary polarization. The fields reflected by an imperfectly conducting plane, characterized by a constant, isotropic surface impedance, are determined by means of the geometrical optics approximation. An optimization method is used to compute the surface impedance, which minimizes a given function of the e.m. fields (e.g. the average energy density) at a given observation point. The properties of the functions to be minimized are studied and a set of numerical results is presented and discussed
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