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How do the NeoTAG® transponders behave in certain metallic environments?

Our product range of NeoTAG® HF RFID transponders/ RFID chips is constantly being expanded and new transponder versions are regularly added. In connection with the use of our transponders, we have compiled a large amount of background information on mounting, function, design, operating behaviour, etc. due to the many applications in which the products are used. As a supplement to our Product Information HF RFID Transponder data sheet, this article contains further technical explanations and application-supporting information.


For common industrial metals and alloys, we have determined the influence to the resonance frequency of the transponder by laboratory tests:

Pre-tuning of
Resonance frequency fRES
Resonance frequency fRES
before installation
Operating frequency fB
Aluminium Al -2.0 MHz 11.6 MHz 13.60 MHz
Iron Fe -1.0 MHz 12.6 MHz 13.60 MHz
Brassg CuZn -1.5 MHz 12.1 MHz 13.60 MHz
Stainless steel*1 e.g. X2CrNi12 -600 kHz 13.1 MHz 13.60 MHz

Table 1: Frequency behaviour in different metallic environments

*1Our NeoTAG® HF RFID transponders are pre-tuned for use in stainless steel!


Due to the broadband design of the transponder and usually also of the reader antennas used, different environmental materials lead in practice to slight deviations in the reading range. In order to achieve an optimal reading range, measurements of the frequency tuning should be carried out in the target application. The resulting application-specific pre-tuning of the transponder will lead to the optimum operating resonance frequency in the application. 


Tell us your requirements - we will develop the right solution for you.

Have we aroused your interest? Then contact us about RFID transponders for different frequency ranges. Customised solutions are our speciality. We will be happy to support you with our know-how to realise your product development. 



PDF: Technical Information NeoTag 2-0922