User guide
Release 9.4.2 Release Notes
Issue 1, May 2009 Page 42
Variable
Band
Antenna
P
G
S
d
(calcu-
lated)
Recom-
mended
Separation
Distance
Power
Compliance
Margin
external
0.4 W
(26 dBm)
10.0
(10 dB)
6 W/m
2
23 cm
60 cm
(24 in)
7
integrated
0.25 W
(24 dBm)
15.8
(12 dB)
6 W/m
2
23 cm
60 cm
(24 in)
7
900 MHz
indoor, integrated
Simulation model used to estimate Specific
Absorption Rate (SAR) levels
10 cm
(4 in)
2
integrated
0.34 W
(25 dBm)
6.3
(8 dB)
10
W/m
2
13 cm
20 cm
(8 in)
2.3
2.4 GHz
integrated
plus reflector
0.34 W
(25 dBm)
79.4
(19 dB)
10
W/m
2
46 cm
1.5 m
(5 ft)
10
integrated
0.2 W
(23 dBm)
5.0
(7 dB)
10
W/m
2
9 cm
20 cm
(8 in)
5
integrated plus
reflector
0.0032 W
(5 dBm)
316
(25 dB)
10
W/m
2
9 cm
1.5 m
(5 ft)
279
5.2 GHz
integrated plus
LENS
0.025 W
(14 dBm)
40
(16 dB)
10
W/m
2
9 cm
50 cm
(12 in)
31
integrated
0.2 W
(23 dBm)
5.0
(7 dB)
10
W/m
2
9 cm
20 cm
(8 in)
5
integrated plus
reflector
0.0032 W
(5 dBm)
316
(25 dB)
10
W/m
2
9 cm
1.5 m
(5 ft)
279
5.4 GHz
integrated plus
LENS
0.020 W
(13 dBm)
50
(17 dB)
10
W/m
2
9 cm
50 cm
(12 in)
31
integrated
0.2 W
(23 dBm)
5.0
(7 dB)
10
W/m
2
9 cm
20 cm
(8 in)
5
integrated plus
reflector
0.2 W
(23 dBm)
316
(25 dB)
10
W/m
2
71 cm
1.5 m
(5 ft)
4.5
5.7 GHz
Integrated plus
LENS
0.2 W
(23 dBm)
50
(17 dB)
1
W/m
2
28 cm
50 cm
(12 in)
3.13
The Recommended Separation Distance is chosen to give significant compliance margin in all
cases. It is also chosen so that a given item (bare module, reflector, or LENS) always has the
same distance, regardless of frequency band, to simplify following exposure distances in the field.
These are conservative distances:
They are along the beam direction (the direction of greatest energy).
Exposure to the sides and back of the module is significantly less.
They meet sustained exposure limits for the general population (not just
short-term occupational exposure limits), with considerable margin.
In the reflector cases, the calculated compliance distance d is greatly
overestimated because the far-field equation models the reflector as a point
source and neglects the physical dimension of the reflector.