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ST25DV04KC fails EN300330 due to 2nd harmonic level exceeded limit

Dan S_2
Associate II

Hi 

I am using ST25DV04KC tag in my product. During EN300330 test, there is a very high 2nd harmonic component radiated and exceeds the limit when the NFC reader is placed beside the tag. Anyone encounter this issue before?

For Type-5 tag, is it normal to see a high 2nd harmonic component during communication with the reader?

Thanks.

Rgds

Dan

       

 

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1 ACCEPTED SOLUTION

Accepted Solutions
Jacob WOODRUFF
ST Employee

Hi All,


This question has been routed to our online support center for direct assistance.

 

Regards,
Jake

ST Support

View solution in original post

2 REPLIES 2
Dave D
ST Employee

Hi,

It is difficult to comment because each configuration is different, however I can share some of the observations we did when certifying our boards.

We saw that changing the power supply and/or the usb cable to power the board can impact the results. Also we saw that the reader used for the test, can have an impact. We have used the ST25R3911B-Disco board as a reader and it was working fine.

Regards

 

Jacob WOODRUFF
ST Employee

Hi All,


This question has been routed to our online support center for direct assistance.

 

Regards,
Jake

ST Support