User's Guide
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Introduction to the RIFD System
To be able to use the complete range of the reader performance in customer applications, we recommend
using the readers ARU3500 or RRU4500. It is not possible to run any customer applications on the basic
readers, i.e. ARU2400, ARU3400 and RRU4400.
8.2 Kathrein RFID Antenna Interface ©KRAI
With the ©KRAI product series, Kathrein has introduced a revolutionary system. By using Kathrein ©KRAI antennas, it is
possible to increase the exibility due to having several antenna properties at one installation point (in case of PLS and
CSB antennas) and functionality (when cascading SMSH antennas).
©KRAI consists of a digital control bus which enables connection between the RFID reader and the RFID antennas to
allow control and regulation tasks in remote antennas
8.2.1 WIRA 70 ©KRAI Polarisation Switch Antenna (PLS)
Fig. 2: PLS antennas connected to the reader
With the ©KRAI PLS antenna, built as a WiRa 70° antenna, the polarisation can be switched statically or dynamically.
The following settings are possible in any combination:
● circular LHCP
● circular RHCP
● linear horizontal
● linear vertical.
It is possible to select the best polarisation for wide-range application and to carry out a exible adjustment of the
antenna on site.
Furthermore, it is possible to increase the read rate via the switching circular LHCP/RHCP by up to 33%.