Field and Wave Electromagnetics 2nd Edition by David Cheng

Exercise 34

A uniform plane wave in air with E i (z) = a x E 0 exp (-j 0 z) impinges normally onto the surface at z = 0 of a highly conducting medium having constitutive parameters 0 , , and ( / 0 1)
a) Find the reflection coefficient.
b) Derive the expression for the fraction of the incident power absorbed by the conducting medium.
c) Obtain the fraction of the power absorbed at 1 (MHz) if the medium is iron.