Directional Radiation Pattern Of The Transponder - Siemens SIMATIC RF600 System Manual

Transponder/tags
7.6 SIMATIC RF640T Gen 2
Reading range: Two conducting walls
Influence on reading range when positioned against two conducting walls
Distance d
Reading range
The values specified in the tables above must be complied with.
7.6.3.5

Directional radiation pattern of the transponder

Preferably, align the tag parallel to the transmitting antenna. If, however, the tag including
the metallic carrier plate is tilted, the reading range will be reduced.
Rotation about the polarization axis
Figure 7-32 Transponder characteristics when rotated about the polarization axis
246
Top view
20 mm 50 mm
Approx. 75 % Approx. 90 %
Approx. 50 % Approx. 45 %
Approx. 40 % Approx. 45 %
0
-5
-10
-15
-20
-25
-90 -80 -70 -60 -50 -40
100 mm
Approx. 90 %
Approx. 80 %
Approx. 75 %
-30 -20 -10 0 10 20 30
System Manual, 10/2009, J31069-D0171-U001-A8-7618
Side view
Wall height 20 mm
Wall height 50 mm
Wall height 100 mm
40 50 60 70 80 90
SIMATIC RF600