Collinear

An antenna configuration that involves arranging multiple dipole antennas in a 'collinear' or 'in-line' manner, usually along a common axis. The primary intention behind this design is to increase the antenna's gain and directivity, which is its ability to concentrate signal in a specific direction. This results in a stronger signal in the horizontal plane, which makes collinear antennas especially useful in applications where broad horizontal coverage is required, such as for ground-based communications and broadcasting.