Alcatel-Lucent OmniPCX Office Installation Manual page 119

External antennae
According to the ETSI EN 301 406 standard, DECT antenna gain is limited to 12 dB +/-3dB. In
the case of external directional antennae, if a minimum safety distance of 50 cm is respected,
the SAR value is the same as the value obtained in the case of an integrated omni-directional
antenna (and therefore, lower than: 0.5 W/kg).
4.8.2.2.3 CONFORMANCE PERIMETER FOR EXPOSURE OF THE PUBLIC
- Integrated omni-directional antennae: no limit for the conformance perimeter
- External antenna (directional): the installation must allow for a safety perimeter respecting
a minimum distance of 50 cm.
4.8.2.3 RECOMMENDATIONS FOR INSTALLATION
4.8.2.3.1 Standard Topology.
The various building infrastructures are grouped into three types of geometric shape.
Coverage areas SQUARE:
The distances quoted below give an idea of typical range of a base station. It is clear that a
rectangular zone requires more base stations to provide full coverage.
4.8.2.3.2 Layout technique
For structures with a number of floors, different solutions can be envisaged as a function of:
- the coverage obtained at each level.
- the position of the Alcatel-Lucent 4070 IO/EO (higher or lower level).
Installation examples
Coverage areas RECTANGULAR
:
Coverage areas ROUND
4-75