Antenna Patterns - Siemens SIMATIC RF610T ATEX System Manual

Antennas
6.6 SIMATIC RF650A
L L imitations in Japan
Note
L L imitation of the radiated power (ARIB)
RF600 systems that are put into operation in Japan must not exceed the following radiated
power with an RF650A 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)
6.6.6

Antenna patterns

Transponder alignment
The RF650A antenna has a circular antenna. With a circular antenna the alignment of the
antenna axis of symmetry changes between horizontal and vertical each time it transmits.
For this reason the alignment of the transponder polarization axis (horizontal/vertical) is
unimportant. Make sure, however, that the transponder is aligned with the antenna.
Figure 6-41
316
Alignment of the transponder polarization axis with a circular antenna axis of symmetry
System Manual, 06/2019, J31069-D0171-U001-A22-7618
SIMATIC RF600