Antenna Patterns; Antenna Pattern Etsi - Siemens SIMATIC RF600 System Manual

6.2.7

Antenna patterns

6.2.7.1

Antenna pattern ETSI

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 6-6 Reference system
The half-power beamwidth 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 168).
Note that the measurements presented graphically below were carried out in a low-reflection
environment. Deviations can therefore occur in a normally reflecting environment.
SIMATIC RF600
System Manual, 06/2010, J31069-D0171-U001-A10-7618
Draft Version 02.06.2010
Antennas
6.2 RF620A antenna
163