This page covers wave propagation in parallel-plate and rectangular waveguides, emphasizing Transverse Electric (TE) and Transverse Magnetic (TM) modes. It explains the conditions for modes to propaga...This page covers wave propagation in parallel-plate and rectangular waveguides, emphasizing Transverse Electric (TE) and Transverse Magnetic (TM) modes. It explains the conditions for modes to propagate, including cut-off frequencies and their implications for wave behavior, such as evanescent modes.