NFC coil

The NFC antenna is based on the RFID radio frequency identification technology, and adopts the transformer co-coupling matching as a hardware processing scheme for communication, and then completes the verification of the data transmission process through the communication instructions of the processor. The software and hardware environment needs to be processed by RFID modulation and matched. Circuit adjustment and design and production. At present, NFC coils are widely used in communication equipment, mobile phones, automotive electronics, computers, electromechanical equipment, medical equipment and other industries.

The NFC antenna is generally composed of a circuit coil made by a winding\/printing\/etching process and a ferrite material with anti-interference ability. It is characterized by stable performance, low failure rate, safety, small size and low cost. The turns of the NFC antenna coil The number of turns and the area of ​​the coil can increase the magnetic flux and the working distance is longer. Of course, when the number of turns and the area are increased, the equivalent inductance of the antenna will also increase. Excessive inductance will lead to the need for electrical power when adjusting the resonant capacitor. The capacity is too small, so the equivalent inductance value of the antenna is usually about 1-2uH.

NFC antenna coil size parameters (mm)