Antennas
6.5 SIMATIC RF642A
SIMATIC RF600
System Manual, 11/2018, J31069-D0171-U001-A21-7618
275
6.5.6 Antenna patterns
6.5.6.1 Antenna radiation patterns in the ETSI frequency band
Directional radiation pattern Europe (ETSI)
The directional radiation pattern is shown for nominal alignment and a center frequency of
866.3 MHz. The nominal antenna alignment is given when the antenna elevation is provided
as shown in the following figure.
Figure 6-35 Reference system
The half-power beam width of the antenna is defined by the angle between the two -3 dB
points. Which range (in %) corresponds to the dB values in the patterns can be obtained
from this table (Page 279).
Note that the measurements presented graphically below were carried out in a low-reflection
environment. Deviations can therefore occur in a normally reflecting environment.
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