The difference between RFID, NFC, and UHF
For
those who are studying handheld PDAs, they often hear about the terms
RFID, NFC, and UHF. Do you know what they represent and what their
relationship is?
RFID: It refers to wireless radio frequency identification, which is a communication technology that can identify specific targets and read and write relevant data through wireless signals without establishing mechanical or optical contact between the recognition system and specific targets.
2、 RFID is mainly divided into several categories:
1. Low Frequency: The frequency range used is from 10 K H z to 1 M H z, with common main specifications such as 125KHz and 135KHz.
2. High Frequency: The frequency range used is 1MHz~400MHz, and the common main specification is the ISM frequency band of 13.156MHz.
3. Ultra High Frequency: The frequency range used is 400MHz~1GHz, with common main specifications of 433MHz and 868~950MHz. This is commonly known as UHF!
4. Microwave: The frequency range used is above 1GHz, with common specifications of 2.45GHz and 5.8GHz. NFC: According to Du Niang's instructions, it refers to near field communication, which is an emerging technology. Devices using NFC technology (such as mobile phones) can exchange data when they are close to each other. It has evolved from the integration of non-contact radio frequency identification (RFID) and interconnection technology, integrating inductive card readers, inductive cards, and point-to-point communication functions on a single chip, Utilize mobile terminals to achieve applications such as mobile payment, electronic ticketing, access control, mobile identity recognition, and anti-counterfeiting. Dassel reminds you that the frequency band used by NFC is 13.56MHz, which coincides with the frequency band commonly used in high-frequency RFID. Therefore, many industry insiders use NFC as a high-frequency RFID, but there are actually differences between the two.
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