https://community.nxp.com/t5/8-bit-Microcontrollers/PN7150-Antenna-tunning/m-p/2068686#M24135 <P>Hello All,</P><P>We are using PN7150 IC in our custom PCB board and it's working fine in Free Air,</P><P>However the Card Reading range is about 35- 40mm without any body,</P><P>But, whenever we put the PCB in Metal Body the range reduces to 5mm and it takes longer time to detect the Cards.</P><P>Can you please help how we can achieve the higher Range .</P> Wed, 26 Mar 2025 12:33:35 GMT Avee 2025-03-26T12:33:35Z https://community.nxp.com/t5/8-bit-Microcontrollers/PN7150-Antenna-tunning/m-p/2068686#M24135 <P>Hello All,</P><P>We are using PN7150 IC in our custom PCB board and it's working fine in Free Air,</P><P>However the Card Reading range is about 35- 40mm without any body,</P><P>But, whenever we put the PCB in Metal Body the range reduces to 5mm and it takes longer time to detect the Cards.</P><P>Can you please help how we can achieve the higher Range .</P> Wed, 26 Mar 2025 12:33:35 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/PN7150-Antenna-tunning/m-p/2068686#M24135 Avee 2025-03-26T12:33:35Z https://community.nxp.com/t5/8-bit-Microcontrollers/PN7150-Antenna-tunning/m-p/2069057#M24136 <P>Hello&nbsp;<a href="https://community.nxp.com/t5/user/viewprofilepage/user-id/248539">@Avee</a>&nbsp;</P> <P>For your issue, please check 2.3 section of AN11755 (<A href="https://www.nxp.com/docs/en/application-note/AN11755.pdf" target="_blank">https://www.nxp.com/docs/en/application-note/AN11755.pdf</A>), where would answer your question.</P> Thu, 27 Mar 2025 01:18:23 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/PN7150-Antenna-tunning/m-p/2069057#M24136 KaiLi 2025-03-27T01:18:23Z