Knowing your environment can help to determine the right antenna and placement. These antennas are ideal for square or somewhat square areas. Directional antennas concentrate the coverage pattern in one direction. The antenna directionality is specified by the angle of the beam width. Antenna gain improves the range of the signal for better communications.
Actual results vary depending on the amount and type of obstructions at the site.
Antenna should generally be mounted as high and as clear of obstructions as practically possible. Best performance is attained when both transmitting and receiving antenna are located at the same height and in a direct line of sight of each other. Access Points should be positioned on or close to the ceiling. Place omni-directional antennas in the center of the coverage area when possible. When ceiling mounted, try to keep antennas at least two feet from sprinkler heads, metal lighting fixtures, etc.