What is RFID?

Radio Frequency Identification or RFID is a technology used for contactless automatic information identification and collection. RFID has two types: Active and Passive. This article will mainly discuss Passive RFID. There are three frequencies where Passive RFID operates: Low Frequency(LF) 125Khz, High Frequency(HF) 13.56Mhz, and Ultra-High Frequency(UHF) 860Mhz – 960Mhz. RFID is mainly composed of three components: RFID Reader, RFID Antenna, and RFID Tag. 

The three frequencies mentioned are covered by its own regulatory standards:

  • Low Frequency(LF) – ISO 18000-2
  • High Frequency(HF) – ISO 14443 / ISO 15693 / ISO 18000-3
  • Ultra-High Frequency(UHF) – ISO 18000-6B / ISO 18000-6C (GS1)

UHF RFID operates between 860Mhz – 960Mhz depending on the country due to different regulatory standards placed by each country/region.

How RFID works?

Radio Frequency Identification or RFID is a technology used for contactless automatic information identification and collection. RFID has two types: Active and Passive. This article will mainly discuss Passive RFID. There are three frequencies where Passive RFID operates: Low Frequency(LF) 125Khz, High Frequency(HF) 13.56Mhz, and Ultra-High Frequency(UHF) 860Mhz – 960Mhz. RFID is mainly composed of three components: RFID Reader, RFID Antenna, and RFID Tag. 

The three frequencies mentioned are covered by its own regulatory standards:

  • Low Frequency(LF) – ISO 18000-2
  • High Frequency(HF) – ISO 14443 / ISO 15693 / ISO 18000-3
  • Ultra-High Frequency(UHF) – ISO 18000-6B / ISO 18000-6C (GS1)

UHF RFID operates between 860Mhz – 960Mhz depending on the country due to different regulatory standards placed by each country/region.

Where is RFID used?

Low Frequency(LF) are commonly used in access control and animal tracking due to its higher tolerance towards liquids compared to HF and UHF.

High Frequency(HF) are mostly used in access control, payments, data transfer, etc. Examples of these are: Passports, Credit Cards, Subway/Metro Cards. HF is chosen due to its high security memory structure and communication protocol.

Ultra-High Frequency(UHF) are applied in car parking management, inventory/warehouse management, production management, etc. UHF applications are gaining more support due to its ability to read at a distance and read multiple tags at a time. 

Watch out for next month’s Journal on Knowing more about the RFID Process.

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