Fundamentals of Engineering Electromagnetics 1st Edition by David Cheng

تمرين 45

A 3-(GHz), y -polarized uniform plane wave propagates in the + x -direction in a nonmagnetic medium having a dielectric constant 2.5 and a loss tangent 0.05.
a) Determine the distance over which the amplitude of the propagating wave will be cut in half.
b) Determine the intrinsic impedance, the wavelength, the phase velocity, and the group velocity of the wave in the medium.
c) Assuming E = a y 50 sin (6 10 9 t + /3)(V/m) at x = 0, write the instanta­neous expression for H for all t and x.