Brocade Enterprise Wireless LAN Antenna Specification Guide, Version 1.5 - Manual (Page 17)

Enterprise Wireless LAN Antenna Specification Guide 5
53-1001881-01
Antenna selection criteria
1
Spectrum and part number designations
The antennas listed in this document are ultimately referenced by part number. A numerical
sequence is used within each antenna’s part number to identify the spectrum supported by the
antennas.
• The antenna part numbers with a 2499 indicates a 2.4 GHz antenna. For more information on
the 2.4 GHz antenna suite, see
“2.4 GHz Single Band Antenna Suite” on page 13.
• The antenna part numbers with a 5299 indicates a 5 GHz antenna. For more information on
the 2.4 GHz antenna suite, see
“5.2 Ghz Single Band Antenna Suite” on page 39.
• The antenna part numbers with a 2452 indicates a dual band antenna (2.4GHz and 5 GHz).
For more information on the 2.4 GHz antenna suite, see
“2.4GHz - 5.2GHz Dual Band Antenna
Suite” on page 53.
Extended AP to antenna cable lengths
Most indoor antennas are intended to be mounted directly to the AP's connectors. Some mounting
arrangements call for positioning the AP a significant distance away from the antenna due to
serviceability or other reason. In these situations, various adapters and cable extensions are
required.
In these situations be mindful of:
• The connector on the AP
• The connector on the antenna
• The spectrum being implemented
• Signal loss due to multiple connectors and long cable lengths
Combinations of these attributes present different parts required to complete the connection. The
Product Compatibility matrix addresses the parts required to make a proper connection. For more
information, see
“FCC/USA compatibility” on page 9.
Antenna selection criteria
In addition to antenna frequency, there is other criteria to consider when selecting an antenna.
Antenna pattern
Omni-directional
Signal radiates from the antenna in all directions on the horizontal plane.
Directional
Signal radiates in a specific direction, typically described as a beam of given width, expressed in
degrees in the horizontal and vertical plane. For more information, see
“Azimuth 3dB Beamwidth”
on page 7 and “Elevation 3dB Beamwidth” on page 7.