Siemens SIMATIC RF600 Series System Manual page 158

Readers
5.4 RF685R reader
Radiation diagram circular
Figure 5-28
Overview of the antenna parameters
Table 5- 23
Azimuth section
Elevation section
Typical antenna gain
in the frequency band 865 to 868 MHz
Antenna axis ratio
You will find more information on the antennas in the section "Guidelines for selecting RFID
UHF antennas (Page 52)".
158
Circular section
Maximum linear electrical aperture angle at 865 MHz:
Polarization
Linear vertical Linear horizontal
64° 61°
64° 66°
5 dBi 3 dBi
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System Manual, 10/2016, J31069-D0171-U001-A19-7618
Circular polariza-
tion
65°
63°
5 dBi
2 dB
SIMATIC RF600