RFID by Frequency

RFID systems are categorized by their operating frequency, which determines range, data rate, and suitable applications. The main frequency bands include:

• Low Frequency (LF, 125–134 kHz): Short-range (up to 10 cm), slower data rates, commonly used for animal tracking, access control, and anti-theft tags. LF tags are less sensitive to metal or liquid interference.

• High Frequency (HF, 13.56 MHz): Medium-range (up to 1 m), widely used for contactless payments, library systems, smart cards, and ticketing. HF supports faster read rates and more data storage than LF.

• Ultra-High Frequency (UHF, 860–960 MHz): Long-range (up to 12 m), high-speed reading, ideal for inventory management, logistics, and supply chain tracking. UHF tags offer larger read zones but can be affected by liquids or metal.

• Microwave Frequency (2.45 GHz and above): Very high-speed, long-range RFID used in toll collection, vehicle identification, and advanced tracking applications, though more sensitive to environmental factors.

By selecting the appropriate frequency, RFID systems are optimized for range, speed, environmental conditions, and application requirements, enabling scalable and efficient automated identification and tracking solutions.