Antenna Patterns - Siemens SIMATIC RF600 System Manual

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6.6 SIMATIC RF650A

Limitations in Japan

Limitation 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)

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.

Alignment of the transponder polarization axis with a circular antenna axis of symmetry

System Manual, 06/2019, J31069-D0171-U001-A22-7618

SIMATIC RF600