Siemens SIMATIC RF640A Bedienungsanleitung Seite 24

Directional radiation patterns in the ETSI frequency band
Polarization axis and axis of symmetry are parallel
In a configuration based on the following directional radiation pattern of the antenna, the axis of symmetry of the antenna
and the polarization axis of the transponder are parallel.
Pattern of the vertical plane of the antenna
Pattern of the horizontal plane of the antenna
Figure 3 The RF640A directional radiation pattern in the ETSI frequency band, polarization axis of the transponder, and
axis of symmetry of the antenna are parallel to each other.
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SIMATIC RF640A
J31069-D0225-U001-A2-7618, 12/2010