ELECTROMAGNETIC WAVE PROPAGATION IN A MEDIUM WITH VARIABLE DIELECTRIC CONSTANT

摘要

The problem of this report is the calculation of the electromagnetic field in a region with dielectric constant of the form .1 + Kr-1, when there is a source at an infinitely remote point. It is shown that when a certain simplifying assumption is made, a rather cumbersome closed-form solution is obtained. The asymptotic development of this solution, however, is compar¬atively simple. It consists of an incident distorted plane wave and a scat¬tered wave. The diffraction of the incident wave is evidenced most clearly by the nature of the solution in the forward direction.