Home > Nordic Semiconductor used in 2.4-GHz RFID reader and tag sensors that can run for 5 years from 3-V coin cell

Nordic Semiconductor used in 2.4-GHz RFID reader and tag sensors that can run for 5 years from 3-V coin cell

Supplier News

Avnet Electronics Marketing  has announced that Swedish Bluetooth and RFID specialist, Free2move, has selected the Nordic nRF2401A for use in its newly launched 2.4-GHz active RFID products.

These have a reader-to-tag range of up 70 m and include Free2move’s Long Life Tag that can run for 5 years or more from a single CR2032 3-V lithium coin cell commonly used in products like wristwatches. (This compares with typical battery life of one year for Free2move’s existing tags.)

Although Free2move’s specialty is Bluetooth, the company’s co- founder and product manager, Dan Hellgren commented: “We found that building a commercially viable RFID system that can read up to 300 fast moving tags per second with Bluetooth was impossible.

The problem is that while Bluetooth is good for high-speed data comms between devices such as a mobile phone and PC, it consumes too much power for heavy duty-cycle applications like RFID. Bluetooth also has a rather sluggish communication latency that isn’t suited to rapid detection of fast moving goods and objects.”

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