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How To Choose A Suitable RFID Frequency For Your Application

How To Choose A Suitable RFID Frequency For Your Application

Feb 18,2022
  • How To Choose A Suitable RFID Frequency For Your Application

  • The application of RFID is developing rapidly. Some sensor monitoring is widely used in some applications such as logistics and healthcare.
  • Sensor monitoring can collect and send relevant data through RFID, including temperature, humidity, movement, etc.
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  • At the same time, it is similar to the radio, which must be tuned to a specific frequency to hear different channels. The RFID tag and the reader must be tuned to the same frequency to communicate.
  • There are generally 3 types of RFID frequencies:
  • Low Frequency (LF), 125 134 kHz
  • High Frequency (HF), 13.56 MHz
  • Ultra High Frequency (UHF), 433 and 860-960 MHz


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  • Low Frequency (LF)

  • Low frequency tags have longer wavelengths and are able to penetrate thin metal substances more efficiently.
  • In addition, low-frequency RFID systems are suitable for reading objects with high water content, such as fruit or beverages, but have a limited reading range of centimeters or inches.
  • Some common examples are access control systems and animal tags.
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  • High Frequency (HF)

  • High-frequency tags can be used for detection of metal objects, as well as goods and objects with moderate moisture content.
  • Typically, high-frequency RFID systems have a read range in the range of a few inches, but can have a maximum read range of about three feet (1 meter). Typical high frequency RFID applications include tracking library books.
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  • Ultra High Frequency (UHF)

  • Compared to LF and HF, UHF generally provides better read range (can be as far as 50+ feet, but depends on RFID system settings) and has a faster transfer data rate, i.e. can read more Label.
  • However, because UHF radio waves have shorter wavelengths, their signals are more easily attenuated, and they cannot pass through metal or water.
  • Due to its high data transfer rate, UHF RFID tags are ideal for connecting many items at one time, such as cargo boxes. In addition, because UHF RFID has a longer reading range, it is suitable for some UHF RFID applications, such as electronic toll collection and parking lot access control.


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