Abstract: An NFC antenna power taking device includes an antenna, a rectifying module, an energy storage module, and a current adjusting module; the antenna is configured to convert the received electromagnetic field energy into a first voltage, the rectifying module is configured to rectify the first voltage to obtain a second voltage, the second voltage is configured to charge the energy storage module through the current adjusting module, the current adjusting module is configured to adjust the charging current, when the second voltage has a tendency to weaken due to the weakening of the electromagnetic field, the energy storage module is configured to discharge directly to maintain the stability of power supply and ensure the normal operation of the circuit, avoiding overload of the NFC field caused by the energy storage module with large capacity getting too much energy at the moment of the NFC device entry.

Abstract: Disclosed are a smart card and a manufacturing method therefor, the method includes: sequentially placing a first substrate, a middle frame and a circuit board, attaching a spacer to a periphery of the circuit board, pouring glue into the middle frame and laminating the middle frame, machining a through hole in the first substrate and an extension plate to expose a contact area; and fixing a contact module on the contact area, and punching for forming.