Question

When plane polarised em wave propagates between two parallel conducting plates

Answer 1

PARALLEL PLANE WAVEGUIDE

As discussed in the last chapter, a uniform plane wave when reflected from a perfectly conducting boundary, forms a standing wave in the space. The standing wave pattern travels along the conducting boundary giving a net power flow along the boundary. Let us build up on this concept to get the parallel plane waveguide. We will show in the following that in a parallel plane waveguide, the electromagnetic wave will propagate in the form of Transverse Electric or Transverse Magnetic modes that is, either the electric field or the magnetic field will be perpendicular to the direction of the net wave propagation