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October 24, 2024
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ST25R95 power

  • October 24, 2024
  • 1 reply
  • 4218 views

Hi ST Teams,

I did a certification test. But failed because the output power exceeded the limit for certain frequencies.
The weird thing actually is not in 13.56Mhz, but outside.
Result test:

MResa1_0-1729757289469.png

 

I understand that this IC has fixed power output.
Do you think we can do anything from command to the IC or this must be to tune the antenna again to solve the issue?

Thanks & Best Regards,
Rezan

    This topic has been closed for replies.
    Best answer by Travis Palmer

    Hello Rezan,

     

    which standard are you testing against?

    I am not familiar with any standard (FCC, CE/RED, CISPR) measuring in µW.

    Here you can find measurement results of the NFC03A1.

    https://fccid.io/YCPNFC03A1

    Please let me also know your measurement configuration. (unloaded, tag in the field, another reader close by,..)

    BR Travis

    1 reply

    ST Employee
    October 28, 2024

    Hello Rezan,

     

    which standard are you testing against?

    I am not familiar with any standard (FCC, CE/RED, CISPR) measuring in µW.

    Here you can find measurement results of the NFC03A1.

    https://fccid.io/YCPNFC03A1

    Please let me also know your measurement configuration. (unloaded, tag in the field, another reader close by,..)

    BR Travis