Antenna Patterns In The Fcc Frequency Band - Siemens SIMATIC RF600 System Manual

Antennas
6.8 SIMATIC RF680A
6.8.6.2

Antenna patterns in the FCC frequency band

Directional radiation pattern FCC
The directional radiation pattern is shown for nominal alignment and a center frequency of
915 MHz.
Figure 6-59 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 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.
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System Manual, 06/2019, J31069-D0171-U001-A22-7618
SIMATIC RF600