Siemens SIMATIC RF615A, Руководство по эксплуатации

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Antenna patterns
6.3 Antenna pattern FCC
SIMATIC RF615A
Operating Instructions, 09/2018, C79000-G8976-C511-01
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6.3 Antenna pattern FCC
Directional radiation pattern FCC
The directional radiation pattern is shown for nominal alignment and a center frequency of
915 MHz.
Figure 6-7 Reference system
The half-power beam width of the antenna is defined by the angle between the two -3 dB
points (corresponding to half the power in relation to the maximum power). Which range (in
%) corresponds to the dB values in the patterns can be obtained from this table (Page 24).
Note that the measurements presented graphically below were carried out in a low-reflection
environment. Low deviations can therefore occur in a normally reflecting environment.