It adopts magnetic shunt coupling. The input microwave signal is evenly split at the junction. Two branch ports achieve equal-amplitude and in-phase output, applicable for power division and synthesis.
H-Plane Tee is a three-port waveguide junction with a T-shaped structure.
The main waveguide and two side branch waveguides share the same H-plane（magnetic field plane, broad-wall plane of rectangular waveguide）.
Inductive metal posts, capacitive diaphragms or step impedance structures are usually added at the junction discontinuity to reduce reflection, improve VSWR and broaden the working bandwidth.
