The E-plane T-junction is a three-port microwave device formed by attaching a side arm parallel to the electric field axis within a rectangular waveguide broadside dimension, operating strictly within scattering parameter (S-Matrix) theory in electromagnetics. Its core theoretical properties include collinear ports exhibiting 180-degree phase opposition due to symmetry and reflectionless operation when matched at the series port, governed by specific unitary S-matrix constraints where diagonal terms are zero and off-diagonal cross-coupling coefficients equal ±1/√2. This concept serves as a foundational element in microwave network synthesis for isolating signals between collinear ports while allowing independent excitation of side arms based on superposition principles derived from reciprocity and energy conservation laws.
The E-plane T-junction is a three-port microwave device formed by attaching a side arm parallel to the electric field axis within a rectangular waveguide broadside dimension, operating strictly withi…