NFCのトピックoperating distance https://community.nxp.com/t5/NFC/operating-distance/m-p/831906#M4437 <HTML><HEAD></HEAD><BODY><P>Hello I am looking for a quick answer please</P><P></P><P>I am using CLRC663 NFC reader, I have designed the matching circuit of my Antenna with 23 Ohm target impedance, however the operating distance is not as required, it is 2 cm using NTAG216 and 0.5 cm using the MIFARE DESFIRE EV1 Tag.</P><P>&nbsp;The diameter of my round antenna is&nbsp; 2cm</P><P></P><P>- I would like to ask why the operating distance different when using the MIFARE card, and it is better with NTAG.</P><P>- Is it possible to improve the result? and how?</P><P></P><P>Thank you&nbsp;</P></BODY></HTML> Mon, 02 Jul 2018 08:56:16 GMT salmabay 2018-07-02T08:56:16Z operating distance https://community.nxp.com/t5/NFC/operating-distance/m-p/831906#M4437 <HTML><HEAD></HEAD><BODY><P>Hello I am looking for a quick answer please</P><P></P><P>I am using CLRC663 NFC reader, I have designed the matching circuit of my Antenna with 23 Ohm target impedance, however the operating distance is not as required, it is 2 cm using NTAG216 and 0.5 cm using the MIFARE DESFIRE EV1 Tag.</P><P>&nbsp;The diameter of my round antenna is&nbsp; 2cm</P><P></P><P>- I would like to ask why the operating distance different when using the MIFARE card, and it is better with NTAG.</P><P>- Is it possible to improve the result? and how?</P><P></P><P>Thank you&nbsp;</P></BODY></HTML> Mon, 02 Jul 2018 08:56:16 GMT https://community.nxp.com/t5/NFC/operating-distance/m-p/831906#M4437 salmabay 2018-07-02T08:56:16Z Re: operating distance https://community.nxp.com/t5/NFC/operating-distance/m-p/831907#M4438 <HTML><HEAD></HEAD><BODY><P>Hello,&nbsp;</P><P></P><P>By any chance, have you checked the different webinars available&nbsp;in the page regarding the antenna design&nbsp;<A class="link-titled" href="https://www.nxp.com/support/training-events/online-training:ON_DEMAND_TRNG" title="https://www.nxp.com/support/training-events/online-training:ON_DEMAND_TRNG">Online Training|NXP</A>&nbsp;?&nbsp;There are six of them which might give you the best guide regarding the antenna design recommendations.&nbsp;</P><P></P><P></P><P>Regards,&nbsp;</P><P>Estephania&nbsp;</P></BODY></HTML> Fri, 06 Jul 2018 20:55:42 GMT https://community.nxp.com/t5/NFC/operating-distance/m-p/831907#M4438 stephanie_m 2018-07-06T20:55:42Z