The heights above the earth of a transmitter and receiver are, respectively, 100 and h = 20 m, as shown in the figure. Assuming that the transmitter radiates both perpendicular and parallel polarizations, how far apart (in meters) should the transmitter and receiver be placed so that the reflected wave has no parallel polarization? Assume that the reflecting medium is a lossless flat earth with a dielectric constant of 12.
Transmitter
100 m
Receiver
Earth