User's Manual

Introduction
1 Introduction
All RBSs are Radio Frequency (RF) transmitters. Very high RF exposure levels
can be harmful. To protect people against such harmful effects, RF exposure
limits with wide safety margins are specified by national and international
health authorities.
This document explains how to estimate RF exposure levels and compliance
distances (minimum separations between antennas and people) for RBS radio
configurations and antennas for which such data is not already specified by
Ericsson.
Note that for typical configurations and recommended antennas, Ericsson
provides information and specifies compliance distances as part of the Product
Data or Technical Product Description for each specific RBS product.
Because it is possible for RF exposure levels to exceed the recommended
exposure limits in the areas defined by compliance distances, it is important
that RBS antennas are installed so that the general public does not have
access to such areas.
For configurations and antennas other than those specified by Ericsson, it is
necessary to estimate RF exposure levels and specify the requirements for
an RBS antenna site. The methods presented here are used to estimate RF
exposure levels and the dimensions of the areas from which the general public
must be excluded. The methods are also applicable for determining compliance
distances for occupational exposure.
These and other calculation and measurement methods are described
in standards such as EN 50383 and EN 50400, IEEE C95.3 and
CEPT ECC/REC/(02)04.
1.1 Target Group
This document is intended for engineering personnel who create site installation
documentation for RBSs used in the following mobile phone systems:
• GSM
• WCDMA
• LTE
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