Squint (antenna)

In a phased array or slotted waveguide antenna, squint refers to the angle that the transmission is offset from the normal of the plane of the antenna. In simple terms, it is the change in the beam direction as a function of operating frequency. It is an important phenomenon that can limit the bandwidth in phased array antenna systems.[1]

An example of squint caused by two differing frequencies

This deflection can be caused by:

As the frequency changes the relation of the signal to the phased array or slots changes.
In some cases the antenna may be designed to create a squint. For example, an antenna which is used to communicate with a satellite but must remain in a vertical configuration. Squint is also required in conical scanning.


  1. ↑ Seyed Kasra Garakoui, Eric A.M. Klumperink, Bram Nauta, Frank E. van Vliet, "Phased-Array Antenna Beam Squinting Related to Frequency Dependency of Delay Circuits"
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