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High Frequency vs. Ultra High Frequency RFID

10/14/2016

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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)​​
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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
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    Hyperlight Systems blogs about smart city tech, the Internet of Things, and wireless trends.

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