User Manual

FCC Test Report
Report No. : FR442525
SPORTON INTERNATIONAL INC. Page No. : 20 of 57
TEL : [phone] Report Version : Rev. 01
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3.3.5 Directional Gain for Power Measurement
Directional Gain (DG) Result
Transmit Chains No.
1 2 -
Maximum G
A
NT
(dBi)
2.66 2.76 -
Modulation Mode N
TX
N
SS
(Min.)
DG (dBi)
(See the Note 4)
11b,1-11Mbps 1 1 2.66
11g,6-54Mbps 1 1 2.66
HT20,M0-15 2 1 2.71
HT40,M0-15 2 1 2.71
Note 1: For all transmitter outputs with equal antenna gains, directional gain is to be computed as follows:
Any transmit signals are correlated, Directional Gain = G
ANT
+ 10 log(N
TX
)
All transmit signals are completely uncorrelated, Directional Gain = G
ANT
Note 2: For all transmitter outputs with unequal antenna gains, directional gain is to be computed as follows:
Any transmit signals are correlated, Directional Gain =10 log[(10
G1/20
+… + 10
GN/20
)
2
/N
TX
]
All transmit signals are completely uncorrelated, Directional Gain = 10 log[(10
G1/10
+… + 10
GN/10)
/N
TX
]
Note 3: For Spatial Multiplexing, Directional Gain (DG) = G
ANT
+ 10 log(N
TX
/N
SS
),
where Nss = the number of independent spatial streams data.
Note 4: For CDD transmissions, directional gain is calculated as power measurements:
Directional Gain (DG) = G
ANT
+ Array Gain, where Array Gain is as follows:
Array Gain = 0 dB (i.e., no array gain) for N
TX
≤ 4;
Array Gain = 0 dB (i.e., no array gain) for channel widths ≥ 40 MHz for any N
T
X