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BlogsAsk The Experts ForumWhat Is the Smallest UHF RFID Inlay With a Read Range of at Least 15 Feet?
What Is the Smallest UHF RFID Inlay With a Read Range of at Least 15 Feet?
I am looking for a paper-thin tag that can fit into a 1-inch by 1-inch area with this read range. Does such a tag exist?
I do not believe there are any tags that measure just 1 inch by 1 inch and can be read from a distance of 15 feet. When a tag is made smaller, it means the antenna is smaller as well, and a smaller antenna cannot harvest as much RF energy from a reader antenna. That means the tag doesn't have the ability to reflect back a strong signal, so it cannot be read from that far. Roughly speaking, I think you would require a tag about four times that size to be able to read it from 15 feet away.
—Mark Roberti, Founder and Editor, RFID Journal
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