Antenna Patterns; Antenna Radiation Patterns In The Etsi Frequency Band - Siemens SIMATIC RF600 System Manual

Antennas
6.4 SIMATIC RF640A
6.4.6

Antenna patterns

6.4.6.1

Antenna radiation 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 6-24 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 288).
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