Antenna Patterns; Alignment Of Transponders To The Antenna - Siemens SIMATIC RF600 System Manual

Antennas
6.2 SIMATIC RF615A
Limitations in Japan
Note
Limitation of the radiated power (ARIB)
RF600 systems that are put into operation in Japan must not exceed the following radiated
power with an RF615A antenna:
• 500 mW EIRP (or 27 dBm EIRP) for operation with RF650R (ARIB STD-T107)
• 4000 mW EIRP (or 36 dBm EIRP) for operation with RF680R/RF685R (ARIB STD-T106)
The maximum permissible radiated power of the antenna cannot be reached or exceeded
due to the negative antenna gain.
6.2.6

Antenna patterns

6.2.6.1

Alignment of transponders to the antenna

Polarization axis
Since the RF615A antenna has linear polarization, it is necessary to consider the alignment
of the transponders with regard to the polarization axis of the antenna.
The polarization axes of antenna and transponder must always be parallel. The symbol on
the antenna indicates the polarization axis.
Figure 6-2
238
Polarization axis
System Manual, 06/2019, J31069-D0171-U001-A22-7618
SIMATIC RF600