Directionality
Omnidirectional antennas have signals that theoretically extend in all directions,
both vertically and horizontally. When gain in increased, the signal expands
horizontally, but decreases vertically. One omnidirectional example is the
dipole “Rubber Duck” antenna.
Directional antennas aim their signal in a specific direction. Signals can spread
fairly wide in one direction or can be narrowly focused. Some examples
include the Diversity Patch Wall Mount Antenna, Yagi, and dish antennas.