The core principle involves deriving the transverse electric field profiles within rectangular waveguide cross-sections by solving Maxwell's equations under perfect electric conductor boundary conditions. This theory defines mode families (TE modes) characterized by distinct cutoff frequencies and orthogonal field distributions determined by integer multiples of half-wavelengths along the guide dimensions. It establishes a formal framework for classifying electromagnetic propagation states in hollow metallic guides, serving as a foundational subject within electromagnetics and microwave physics where field continuity and boundary constraints dictate modal existence and spectral content.
Prerequisite chain context: requires Waveguide Modes: TE10 and H-plane Junctions.