4.3
Signal Path Clearance (Fresnel Zone)
The
Fresnel Zone
is the area around the visual line-of-sight that radio waves spread out into
after they leave the antenna.
You want a clear line of sight to maintain signal strength
,
especially for 2.4 GHz wireless systems.
4.4 Multi-Path Fading
Because a 6900 Series typically transmits its strongest signals in a cone-shaped pattern,
some of the signal may be reflected from a nearby building, from water under the signal path,
or from other RF reflectors. This reflected signal can then be received by the far- end 6900
series and superimposed on the main signal, usually degrading the signal strength.
4.5 Relationship between data rate and distance
With increasing of distance, data rate (throughput) will decrease.
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