Used in NFC (NearFieldCommunication) payment mobile phones and other handheld devices, the main function of electronic tags is to reduce the absorption of the signal magnetic field by metal materials, and effectively increase the sensing distance by increasing the strength of the magnetic field. Payment type mobile phone (NFC) payment method is realized through 13.56MHz RFID radio frequency identification system.
The RFID smart label of this application is affixed to the back cover of the mobile phone, which can save space to a certain extent.
In handheld electronic devices such as mobile phones, electronic tags need to be integrated or attached to the electronic device to function as a component of the device. Often due to limited space, it is inevitable to attach RFID tags (usually passive) to metals, etc. The surface of the conductive object or the place where there are metal devices nearby.
In this way, the alternating electromagnetic field induced by the tag under the action of the signal sent by the card reader is easily attenuated by the metal eddy current, which greatly weakens the signal strength, leading to the failure of the reading process. Therefore, in order for the product to be able to better use the card reader, it is necessary to add absorbing materials to the product. Ferrite sheets have begun to be widely used in small payment mobile phones and radio frequency fields.