Collinear antenna array

An antenna mast with four colinear directional arrays.

In telecommunications, a collinear (or co-linear) antenna array is an array of dipole antennas mounted in such a manner that the corresponding elements of each antenna are parallel and collinear, that is they are located along a common line or axis.

A collinear array is usually mounted vertically, in order to increase overall gain and directivity in the horizontal direction. When stacking dipole antennas in such a fashion, doubling their number will, with proper phasing, produce a 3 dB increase in gain.

References

 This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C".

Chris Burks