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DESCRIPTION 22 ( 50 )
/ XSNSIXI 129/1551-LZA 701 0001 Uen
CBC/ XRX/M ( Kai Lian) 2011-05-05 F
Prepared (also subject responsible if other) No.
Approved Checked Date Rev Reference
Ericsson has performed a free-space near-field RF exposure assessment of
typical configurations of the RBS 2106 with a recommended antenna. The
resulting dimensions, in metres, for a compliance boundary for both public and
occupational exposure, are shown in Table 17.
The compliance boundary is defined as a cylinder around the antenna, see
figure below. The antenna is not located at the centre of the cylinder. Instead
it is located almost at the edge, facing towards the center of the cylinder.
The distance between the antenna’s rear and the edge of the cylinder is the
so-called distance behind antenna. The height of the cylinder is the antenna
height plus equal distances above and below the antenna. The cylinder shape
overestimates the compliance distances right beside the antenna.
Figure 8 Compliance Boundary Cylinder
Table 17 Compliance Boundary Dimensions for the General Public (GP) and
Occupational (O) Exposure for Typical Configurations
Dimensions of Cylindrical Compliance
Boundary in (m)
Diametre Height Distance
Behind
Antenna
Configuration
Frequency
(MHz) GP O GP O GP O
900 6 3 1.7 1.5 0.1 0.1
3×2 no hybrid
1800
5
1 1.6 1.4 0.1 0.05
900 6 3 1.6 1.5 0.1 0.1
3×4 combined
1800
5
1 1.6 1.4 0.1 0.05
900 8 4 1.9 1.6 0.1 0.1
3×2 TCC
1800
7
2 1.6 1.5 0.1 0.1