Accession Number:

ADA172585

Title:

Minimizing the Reflection of Electromagnetic Waves by Surface Impedance.

Descriptive Note:

Technical summary rept.,

Corporate Author:

WISCONSIN UNIV-MADISON MATHEMATICS RESEARCH CENTER

Personal Author(s):

• Bridges,T. J.
• Chen,G.
• Crosta,G.

Report Date:

1986-07-01

Pagination or Media Count:

35.0

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. Keywords geometrical optics control theory.

Descriptors:

• *ELECTROMAGNETIC WAVE REFLECTIONS
• MAGNETIC FIELDS
• OPTIMIZATION
• COMPUTATIONS
• ELECTRIC FIELDS
• APPROXIMATION(MATHEMATICS)
• CONTROL THEORY

Subject Categories:

• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE