D-Link ANT24-1800 User Guide - Page 28
Fresnel Zone
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FSryesstenmelRZeoqunierements ANT24-0700 Install Guide How far above the ground and other obstacles the antennas need to be is determined by the radius of the Fresnel zone. The radius of the Fresnal Zone depends upon the frequency and distance between the two radios. The following table provides approximate Fresnel zone radius: In order to have LOS clearance, the combined antenna height should be equal to or at least 70% of the radius of the Fresnel zone. Required Fresnel Zone radius Fresnel Zone Radius: Range Distance between Required Fresnel Zone Required Fresnel Zone antennas Radius ( 2.4GHz Radius) Radius ( 5GHz Radius) 300m 3.06m 2.12m 1.6Km 7.07m 4.9m 8Km 15.81m 10.95m 10Km 17.68m 12.25m 15Km 21.65m 15m 28
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28
ANT24-0700 Install Guide
System Requirements
Fresnel Zone
How far above the ground and other obstacles the antennas need to be is
determined by the radius of the Fresnel zone. The radius of the Fresnal Zone
depends upon the frequency and distance between the two radios. The
following table provides approximate Fresnel zone radius:
In order to have LOS clearance, the combined antenna height should be equal
to
or at least 70%
of the radius of the Fresnel zone.
Fresnel Zone Radius:
Range Distance between
antennas
Required Fresnel Zone
Radius ( 2.4GHz Radius)
Required Fresnel Zone
Radius ( 5GHz Radius)
300m
3.06m
2.12m
1.6Km
7.07m
4.9m
8Km
15.81m
10.95m
10Km
17.68m
12.25m
15Km
21.65m
15m
Required Fresnel
Zone radius