A waveguide tee is a 3 port device that is similar to a power divider. When the axis of the side arm is parallel to the Electric Field (E) of the collinear, then the tee is called a E-Plane Tee Junction.

Why are waveguide tees used?

This devices are mainly used for combining power and splitting power in a waveguide system. The waveguide tees are 3 port components and are mainly of two types E-plane tee connected in series and H-plane tee connected in shunt with section or branch of main waveguide transmission line.

How does a Magic-Tee work?

The magic comes from the way it prevents signals from propagating between certain ports under specific conditions. This allows it to be used as a duplexer; for instance, it can be used to isolate the transmitter and receiver in a radar system while sharing the antenna.