Flexible printed circuit board with near-field communication (NFC) coil integration

A portable electronic device, comprising:

• a flexible printed circuit board comprising:
• a conductive coil in a first region of a body of the flexible printed circuit board, the conductive coil configured to receive or send data via near-field communication (NFC), one or more circuit components in a second region of the flexible printed circuit board;
• a ferrite sheet on a side of the flexible printed circuit board opposing a first surface, wherein the ferrite sheet overlaps the first region including the conductive coil;
• and
• an insulating layer disposed between the conductive coil and the ferrite sheet, the insulating layer being positioned adjacent a conductive bridge such that the insulating layer contacts at least a portion of the conductive bridge, the insulating layer being configured to secure the ferrite sheet to a portion of the body the flexible printed circuit board;
• a first printed circuit board comprising a first circuit coupled to the one or more circuit components to perform a function of the portable electronic device;
• and
• a second printed circuit board comprising a second circuit coupled to the conductive coil to process a wireless signal received or sent via the conductive coil.