AASTRA RFP 34 IP DECT Site Survey Kit User Guide DE - Handbuch (Seite 39)

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Radio characteristic of a base station
The coverage range of a base station depends among other things on the antenna through which
the radio signal is transmitted. The base stations transmit through two integrated antennas inside
the housing. The radio characteristic of internal antennas is doughnut-shaped (with only transmis-
sion to the rear slightly diminished), in other words registered handsets are able to move away from
the base station the same distance in every direction without the radio signal breaking up. This does
not take account of the topology that attenuates the signal’s propagation.
Doughnut-shaped radio characteristic of a DECT base station
The radio characteristic within the area to be covered is influenced by the objects and materials
located in the buildings. The doughnut-shaped radio characteristic is therefore deformed accord-
ingly depending on local circumstances.
Radio characteristic through obstacles to radio propagation.
Basics