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I am trying to make the MFRC522 (https://www.nxp.com/documents/data_sheet/MFRC522.pdf) to work with a taoglas 50-Ohm antenna (http://taoglas.com/images/product_images/original_images/FXR.01.07.0100C.A.pdf)

To start I based my schematic and layout in the arduino RFID board but the problem here is that this board uses a PCB antenna and the circuit is composed with EM filter and impedance matching.

I think that as I am using a 50-Ohm antenna, I don´t need to build the impedance matching part, but the problem is that I can´t find a place I can get a circuit for MFRC522 with a 50-Ohm antenna.

I appreciate all the help!

Thanks!

EDIT:

My question is what is the circuit I need to build between the MFRC522 and the Antenna. And what is the values of the components.

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  • \$\begingroup\$ What is your question? \$\endgroup\$ – Tyler Jan 10 '17 at 21:15
  • \$\begingroup\$ What is the circuit I need to build between the mrfc522 and the antenna. And the values of the components Thank! \$\endgroup\$ – user5343 Jan 11 '17 at 16:40
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    \$\begingroup\$ Please edit your question, to include the question. \$\endgroup\$ – Tyler Jan 11 '17 at 16:44
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After a long night I figured out what to do.

This PDF, Design of MF RC500 Matching Circuits and Antennas (alternative source), has a detailed info about how to implement what I wanted.

This is the image of the circuit I implemented, just needed to change some values of caps, but all near to the ones in the image. Worked perfectly.

Values for the EMC- Filter and Receiving Circuit Values for the impedance transformation 50 Ω Short Range solution: 50 Ω impedance transformation using one driver stage

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