What is a Waveguide Tee?

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- everything RF

Nov 23, 2017
A Waveguide Tee is a 3-port device that can be used to either divide or combine power in a waveguide system. It is formed when three waveguides tubes are connected in the form of the English alphabet 'T'. This is where its name is derived from.



There are two main types of Waveguide Tees:


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. The outputs we get in this type of tee are 180° out of phase with each other, irrespective of from which port the input is fed.

If the input signal is fed to port 3, then the output will be split across port 1 and 2 and will be 180 degrees out of phase with each other. Click here to learn more about E-Plane Waveguide Tees.


When the axis of the side arm of the waveguide tee is parallel to the flow of the Magnetic Field (H) from port 1 and is perpendicular to the flow of the Electric Field (E), then the tee is called a H-Plane Waveguide Tee.



An H-Plane Waveguide Tees can be thought of as a two way in-phase power divider/combiner i.e it is additive in nature. When two input signals are fed to port 1 & 2, the output at port 3 is in phase and additive and when the input signal is fed to port 3, the signal is split in to two equal parts that are in-phase at port 1 & 2. Click here to learn more more about H-Plane Waveguide Tees.

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