Is There an RFID Reader on the Market that Offers a 100-Meter Radius?

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Ask The ExpertsIs There an RFID Reader on the Market that Offers a 100-Meter Radius?
RFID Journal Staff asked 5 years ago

I need a UHF RFID system that is app-compatible, readers with built-in antennas and readers with a radius of 100 meters (328 feet). My preferred price would be approximately $200 per reader. The system should be able to track people. What would be the average price for such a solution?

—Pradyoth

———

Pradyoth,

There is no RFID reader on the market with a 100-meter radius. The overhead readers on the market generally have a read field with a 12-meter (39-foot) radius. Mojix does make an overhead reader that covers a much larger area using a phased-array antenna system. This system requires that you place RF-emitting nodes within 20 to 30 feet of tags in order to energize them.

The price of a passive UHF reader with a built-in antenna is about $1,000. This reader emits energy that is roughly in the shape of an American football—that is, the read field is narrow near the reader, expands outward in the shape of a cone and then narrows again as you get farther from the reader. An overhead reader that can emit a read field with a 12-meter (39-foot) radius ranges from about $2,000 to $5,000, depending on the features and the number of units purchased.

I hope this answers your question, and I look forward to seeing you at RFID Journal LIVE! in May.

—Mark Roberti, Founder and Editor, RFID Journal

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