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NFC architecture and standards involved
Source:Original | Author:C&T RF Antennas Inc | Publish time: 2019-02-25 | 1257 Views | Share:


The NFC technology evolved from contactless radio frequency identification (RFID). The RFID transmission range can reach several meters or even tens of meters. It can only read and determine information, and NFC technology emphasizes information exchange. Near field, communication is operated at a frequency of 13.56 MHz within a distance of 20 cm, and its transmission speed is 106 Kbit/s, 212 Kbit/s, or 424 Kbit/s.

 

The Near Field Communication Forum defines three operating modes (PDF):

Point-to-point mode (P2P mode): Supports communication between two near-field communication devices, enabling information exchange and file sharing.

 

Reader/writer mode: It enables the near-field smart device to read relevant information from poster or exhibition information electronic tags.

 

Card emulation: Near field communication devices can be like smart cards, allowing users to pay for retail shopping and transportation expenses.

 

NFC phones have built-in NFC chips, which makeup part of the RFID module and can be used as RFID passive tags to cover expenses. They can also be used as RFID readers for data exchange and acquisition.

 

NFC card emulation, reader/writer, and point-to-point three modes are divided from the application mode. The card emulation mode is also often referred to as the read mode. The mobile terminal can be modeled as an ordinary contactless card that can be read by the POS. This mode usually inherits widely used applications such as bank cards and access control cards. Bus cards, etc., use NFC mobile phones as carriers and take advantage of the advantages of mobile phones in the network, multimedia, and human-computer interaction. The application scenarios are also similar to the existing methods; the reader/writer mode is often called the main reading mode, and the mobile terminal can read Take the content of a contactless card or a non-contact tag, this mode may inherit existing applications, such as the NFC phone as a POS machine to read the existing bank card, bus card, but also can be NFC Newly defined application scenarios, such as the use of NFC phones to read NFC-defined targets