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EMC Design

thread239-431488

EMC Design

EMC Design

(OP)
Hi all,

I am design EMC filter part of the MFRC522 Antenna Circuit, in the AN1445 application note, i find the the below recommendation,


Can someone please explain what does it mean L0 = 390nH - 1uH
I am sorry if this is a dumm question

Thanks in advance,
ATarek

RE: EMC Design

Yep.

Just a bit further down the same page is given an example where the L0 inductor was selected to be 560nH, leading to a convenient calculated value for the C0 capacitor of 220pF.

If you have time to await delivery, you can order MFRC522 RFID modules from eBay sellers for a couple of dollars, including some RFID tags (typically one card and one key-ring tag). They might provide a useful example.

RE: EMC Design

(OP)
Thank you everyone for your support.
About the MFRC522 ready made module, i already have it, but i am trying to design my own reader,

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