Antennas
6.8 SIMATIC RF680A
SIMATIC RF600
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System Manual, 06/2019, J31069-D0171-U001-A22-7618
6.8.6.1
Antenna patterns in the ETSI frequency band
Directional radiation pattern 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 6-55 Reference system
The half-power beam width of the antenna is defined by the angle between the two -3 dB
points. The range (in %) corresponding to the dB values in the patterns can be obtained from
this table (Page 354).
Note that the measurements presented graphically below were carried out in a low-reflection
environment. Deviations can therefore occur in a normally reflecting environment.
