Allied-telesis AT-WL2411 Manual de usuario Pagina 6

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R
adiation Patters of Various Antennas
O
mnidirectional:
C
ircular patter in open spaces
R
ange is slightly effected by antenna gain but the radiation pattern will
r
emain relatively circular.
F
lat Panel:
M
odest directional coverage with a slight backlobe
T
he main lobe of the radiation pattern can be from almost circular to fairly
o
blong in shape. Good for slightly directional coverage such as down
c
orridor or away from walls.
D
ual Flat Panel:
B
i-directional coverage
G
ood for transmission down two opposing directions of a corridor.
D
irectional YAGI (High Gain):
H
ighly focused signal.
G
ood for wireless bridging or very specialized coverage.
T
here must always be a tradeoff between gain and coverage area. As can be
s
een in the radiation patterns presented, the higher the gain (directional
d
istance) as with the Yagi antenna, the narrower the coverage. And
c
onversely, the lower the gain, the more universal the coverage about the
a
ntenna's axis.
Antenna patterns are 3
dimensional. The radiation
patterns (above) are views
of the azimuth plain, which
is a top down view.
______________________________________________________________________________________
PN 613-50537-00 Rev A 6
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