How Can I Tag Goods With High Metal or Water Content?

By

  • TAGS
Ask The ExpertsCategory: QuestionsHow Can I Tag Goods With High Metal or Water Content?
anose asked 4 weeks ago
How can the limitations of tagging aluminum and liquid items with passive UHF RFID be solved if it is impossible to scan those items and have them detected by reader antennas? If this too difficult to solve? How can we overcome this issue?

—Anose

= = =

Anose,

You cannot use an ordinary tag on items that are made of metal or that have high water content. Metal detunes antennas and reflects energy away from tags, while water can also detune antennas and it will absorb RF energy in the UHF spectrum. For metal items, you would need to use an on-metal tag. For goods containing high water content, you would need to either place the tag in an area without liquid—such as at the neck of a bottle—or use a tag specially designed to work around water.

Mark Roberti
Founder and Editor
RFID Journal

 

Login and post your comment!

Login
Register Now

Not a member?
Signup for an account now to access all of the features of RFIDJournal.com!

Previous Post

»