Appendix; Planning And Installation Of Uhf Read Points; Technical Basics; A.1 Planning And Installation Of Uhf Read Points - Siemens SIMATIC RF650R Configuration Manual

Appendix

A.1

Planning and installation of UHF read points

RFID UHF systems (frequency band 865 - 928 MHz) have different requirements in terms of
planning, commissioning and operation compared with the HF systems commonly used up
to now in automation (frequency band 13.56 MHz). This section describes important rules for
preparation and implementation of the RFID UHF systems.
A.1.1

Technical basics

General
In contrast to inductively coupled HF systems, in UHF technology, there is full propagation of
the radio waves just as in other wireless systems (radio, TV etc). There are both magnetic
and electrical field components present. The following graphic shows the structure of a UHF
system. One characteristic is the design of the transponder that differs greatly from the
structure used in HF systems, e.g. the use of a dipole or helix antenna.
Figure A-1
SIMATIC RF650R/RF680R/RF685R
Configuration Manual, 10/2015, C79000-G8976-C386-03
Structure of a UHF RFID system
A
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