Читать книгу Introduction To Modern Planar Transmission Lines - Anand K. Verma - Страница 215

There are two special cases of the angle of incidence: one for the complete transmission of waves at the interface, and another for the total reflection of the wave at the interface of two media. These are known as Brewster angle and critical angle. Brewster angle is the angle of incidence at which the reflection coefficient is zero and the incident wave is fully transmitted from one medium to another with refraction. So the Brewster angle corresponds to the impedance matching condition under which reflection at the interface, in the medium #1, is zero, and the incident power is completely transmitted to the medium #2. At the critical angle of incidence or the incidence angle greater than the critical angle, the incident wave is completely reflected by the interface of two dielectric media. This kind of total reflection is superior to that of the total reflection from any metallic surface that always introduces loss. We consider these two special cases of the angle of incidence for both the TE and TM polarizations.