RFID Journal Staff asked 9 years ago —Name withheld
———
To achieve reads from five feet away, you would most likely need to utilize passive ultrahigh-frequency (UHF) tags, which use backscatter to communicate with readers. It is possible to extend the read range of high-frequency (HF) tags to five feet, but that would involve special reader antennas that are not really necessary. You could easily achieve 5 feet of read range via UHF.
Tags as close as six inches are sometimes a challenge to interrogate. I have been told that tag providers have designed tags able to operate both in the near field (within one wavelength of a reader) and the far field, but I am unaware of any models that have actually hit the market. These would enable you to read a tag when it is either close to a reader, or five feet away. If you can keep the tag at a distance of 1 foot to 5 feet, that might make things easier for you.
The fact that you are operating within a Faraday cage should also facilitate the process. The cage should keep out extraneous RF energy that could otherwise interfere with tag reads.
—Mark Roberti, Founder and Editor, RFID Journal
Login and post your comment!
Not a member?
Signup for an account now to access all of the features of RFIDJournal.com!
Previous Post
Can I Encode Both Private and Public Information on a Single Tag? »
