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2.4 Antenna Selection
10
2.4.1 Omnidirectional Antennas
Omnidirectional antennas radiate spherically, providing equal coverage in
all directions, and are best for multi-point links and forwarding sites.
Because they receive and transmit signals in all directions, they are the
best antenna for most installations.
Side View
Omnidirectional Antennas - Radiation Pattern
2.4.2 Directional Antennas
Directional antennas focus their RF beam in narrow patterns in one
direction. Directional antennas provide communications over longer
ranges than omnidirectional antennas, but are much more limited in the
areas they cover. Directional antennas maximize link distances. They are
also effective for simple, dedicated, point-to-point links.
NOTE:
Directional antennas limit future growth and prevent the wireless
modem from repeating signals to other units. They should be used only
where an omnidirectional antenna will not work.
Nokia RoofTop™ Wireless Routing Installation Guide
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