High Frequency vs. Ultra High Frequency RFID

Among the benefits of RFID are versatility and the variety of applications where it can be applied.  To correctly calibrate a solution, it's crucial to work with an experienced RF systems engineer to design a solution that delivers maximum performance.

​Here's a technical breakdown of HF vs UHF RFID and some use cases for you to consider.

Defining RFID (Radio-Frequency Identification):
​The wireless transfer of data for tracking and identification of objects via affixed tags​.
​
​Two basic components:

• Reader (transceiver/antenna)
• Data carrier (tag)​​

Selecting the right RFID Technology

• Use HF (13.56MHz) when possible
  • Single Tag
  • Range in inches
  • Recirculating tag (tag goes through process over and over)

 

• Use UHF (900 MHz) when needed
  • Single Tag (but)
    • very low-cost label tags
    • extremely small tags
    • metal mount tags
  • Range in feet
  • Tag ships with product (inventory tags are typically UHF)

 

• Use UHF (900 MHz) when multiple tags are required
  • Multiple tag inventory applications
  • Range in feet