https://community.nxp.com/t5/NFC/Assistance-in-Improving-ICODE-SLIX-Tag-Detection-Range-from-1-cm/m-p/2076455#M13011 <P>Hi,</P><P>Your antenna is tuned for 50Ohm, so you need to modify your circuit to have a resistive output on the PN5180.</P><P>VIncent</P> Tue, 08 Apr 2025 19:50:55 GMT vincentthivent 2025-04-08T19:50:55Z https://community.nxp.com/t5/NFC/Assistance-in-Improving-ICODE-SLIX-Tag-Detection-Range-from-1-cm/m-p/2076050#M13008 <P>Issue - The current detection range of the I CODE SLIX tag using a PN5180-based antenna setup is limited to approximately 1 cm. This reduced range may be attributed to the antenna tuning<BR />circuit. I have uploaded the PN5180 schematic, the antenna tuning circuit, and a link to the<BR />antenna used for your review.</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="pn5180-range.png" style="width: 245px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/331904i4A8B8145E8CA4D3E/image-dimensions/245x164?v=v2" width="245" height="164" role="button" title="pn5180-range.png" alt="pn5180-range.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">pn5180-range.png</span></span></P><P>PN5180 SCHEMATIC</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="pn5180-sch.png" style="width: 678px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/331901i143BD53825BC5016/image-size/large?v=v2&amp;px=999" role="button" title="pn5180-sch.png" alt="pn5180-sch.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">pn5180-sch.png</span></span></P><P>CURRENT CONFIGURATION FOR MATCHING ANTENNA TUNING CIRCUIT SCHEMATIC</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="pn5180-matchcir.png" style="width: 637px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/331902i89A321BE8727B105/image-size/large?v=v2&amp;px=999" role="button" title="pn5180-matchcir.png" alt="pn5180-matchcir.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">pn5180-matchcir.png</span></span></P><P>RFID TAG:<BR /><A title="RFID TAG: RapidRadio RRHFT10 13.56 MHz ISO15693 ISO18000-3 ICODE SLIX HF RFID Wet Inlay Label Tag - 38 X 28 mm ANTENNA: Linear 13.56MHz 2W Antennas ROHS CUSTOM BOARD :" href="https://www.amazon.in/dp/B0B19PZPDC?ref=cm_sw_r_apan_dp_HZAS72HPMDKZDMS2G9GG_1&amp;ref_=cm_sw_r_apan_dp_HZAS72HPMDKZDMS2G9GG_1&amp;social_share=cm_sw_r_apan_dp_HZAS72HPMDKZDMS2G9GG_1" target="_self">RapidRadio RRHFT10 13.56 MHz ISO15693 ISO18000-3 ICODE SLIX HF RFID Wet Inlay</A><BR /><A title="RFID TAG: RapidRadio RRHFT10 13.56 MHz ISO15693 ISO18000-3 ICODE SLIX HF RFID Wet Inlay Label Tag - 38 X 28 mm ANTENNA: Linear 13.56MHz 2W Antennas ROHS CUSTOM BOARD :" href="https://www.amazon.in/dp/B0B19PZPDC?ref=cm_sw_r_apan_dp_HZAS72HPMDKZDMS2G9GG_1&amp;ref_=cm_sw_r_apan_dp_HZAS72HPMDKZDMS2G9GG_1&amp;social_share=cm_sw_r_apan_dp_HZAS72HPMDKZDMS2G9GG_1" target="_self">Label Tag - 38 X 28 mm</A><BR />external ANTENNA:<BR /><A href="https://www.lcsc.com/product-detail/Antennas_MyAntenna-AINF002_C22467634.html" target="_blank" rel="noopener">Linear 13.56MHz 2W Antennas ROHS</A></P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="pn5180-ant-1.png" style="width: 214px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/331905i3D50F3B50D227BB3/image-size/large?v=v2&amp;px=999" role="button" title="pn5180-ant-1.png" alt="pn5180-ant-1.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">pn5180-ant-1.png</span></span></P><P>Got the suggestion from NXP for matching antenna tuning circuit from the this website<BR /><A href="http://matching%20antenna tuning circuit" target="_blank" rel="noopener">https://community.nxp.com/t5/NFC/bd-p/nfc</A><BR />Can I follow this configuration?</P><P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="pn5180matcghsugg.png" style="width: 627px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/331907i3C32332427E94F31/image-size/large?v=v2&amp;px=999" role="button" title="pn5180matcghsugg.png" alt="pn5180matcghsugg.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">pn5180matcghsugg.png</span></span><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Screenshot 2025-04-08 at 15-20-35 PN5180-updated - PN5180-updated-1.pdf.png" style="width: 768px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/331911iFA2F7F5D41A07EDC/image-size/large?v=v2&amp;px=999" role="button" title="Screenshot 2025-04-08 at 15-20-35 PN5180-updated - PN5180-updated-1.pdf.png" alt="Screenshot 2025-04-08 at 15-20-35 PN5180-updated - PN5180-updated-1.pdf.png" /><span class="lia-inline-image-caption" onclick="event.preventDefault();">Screenshot 2025-04-08 at 15-20-35 PN5180-updated - PN5180-updated-1.pdf.png</span></span></P> Tue, 08 Apr 2025 10:06:28 GMT https://community.nxp.com/t5/NFC/Assistance-in-Improving-ICODE-SLIX-Tag-Detection-Range-from-1-cm/m-p/2076050#M13008 inhlanzii 2025-04-08T10:06:28Z https://community.nxp.com/t5/NFC/Assistance-in-Improving-ICODE-SLIX-Tag-Detection-Range-from-1-cm/m-p/2076455#M13011 <P>Hi,</P><P>Your antenna is tuned for 50Ohm, so you need to modify your circuit to have a resistive output on the PN5180.</P><P>VIncent</P> Tue, 08 Apr 2025 19:50:55 GMT https://community.nxp.com/t5/NFC/Assistance-in-Improving-ICODE-SLIX-Tag-Detection-Range-from-1-cm/m-p/2076455#M13011 vincentthivent 2025-04-08T19:50:55Z https://community.nxp.com/t5/NFC/Assistance-in-Improving-ICODE-SLIX-Tag-Detection-Range-from-1-cm/m-p/2083469#M13072 <P>Yes , antenna is tuned to 50 ohms . Can you provide some suggestion in modifying the circuit ?</P> Sun, 20 Apr 2025 08:23:59 GMT https://community.nxp.com/t5/NFC/Assistance-in-Improving-ICODE-SLIX-Tag-Detection-Range-from-1-cm/m-p/2083469#M13072 inhlanzii 2025-04-20T08:23:59Z