miniPCIe-CEFIRO Family
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MTX Terminals® by MATRIX ELECTRONICA S.L.U
8.2.1
SAR information
Cinterion Wireless Modules models: EHS6 and EHS8 is marketed without a defined antenna.
The Maximum Antenna Gain when using indoor antennas depends on the distance from the antenna
to any nearby persons when in normal operation. It should not exceed the values shown on the table
below.
According to the limit in 47 CFR 1.1310, we get the value of the maximum antenna gain as follows:
The maximum measured power output in the 850 MHz band is 1866.38 mW (32.71 dBm, see 7layers
test report MDE_Siem_0714_FCCb).
The maximum permissible exposure is defined as 47 CFR 1.1310 with 0.55773 mW/cm².
The maximum measured power output in the 1900 MHz band is 974.99 mW (29.89 dBm, see 7layers
test report MDE_Siem_0714_FCCc).
The maximum permissible exposure is defined as 47 CFR 1.1310 with 1 mW/cm².
According to the limit in 47 CFR 1.1310, we get the value of the maximum antenna gain as follows:
S = P*G/4
π
R²
S = 0.55773 mW/cm² or 1 mW/cm²
P = 1866.38 mW or 974.99 mW
R = 20 cm or 100cm
π
= 3.1416
G(dBi)=10*log10(G)
Solving for G; the maximum antenna gain is
Band
Distance
Maximum Gain in dBi
850MHz
20cm
1.7669
850MHz
50cm
9.7257
1900MHz
20cm
7.1227
1900MHz
50cm
15.0815
