Question

The Ultra High Frequency (UHF) RFID tag uses a frequency of:

• A. 30-500 KHz
• B. 3-30 MHz
• C. 300-950 MHz
• D. 2.4-2.5 GHz

Hint:

Remember, different RFID technologies operate within distinct frequency bands, each offering unique advantages in terms of read range, data rate, and application suitability.

Answer 1

The Correct Option is C

Step 1: Concept
Ultra High Frequency (UHF) RFID tags operate within a specific frequency range.

Step 2: Meaning
UHF RFID tags are used for long-range identification and tracking, typically over distances of several meters. The UHF band is part of the radio spectrum allocated for various communication purposes.

Step 3: Analysis
- Option A: 30-500 KHz corresponds to Low Frequency (LF) RFID. - Option B: 3-30 MHz corresponds to High Frequency (HF) RFID. - Option D: 2.4-2.5 GHz is used for Microwave RFID, such as those found in contactless credit cards and some smart cards. The correct frequency range for UHF RFID tags is specified by the International Organization for Standardization (ISO) 18000-63 standard, which operates within the 860-960 MHz band. This falls under the broader category of 300-950 MHz as stated in Option C.

Step 4: Conclusion
The UHF RFID tag uses a frequency range that aligns with the specified options and standards set by ISO for this technology. Final Answer: (C)