Home Internet of Things Aerospace Apparel Energy Defense Health Care Logistics Manufacturing Retail

Ask The Experts Forum

BlogsAsk The Experts ForumCan Tag Distance From a Reader Be Precisely Determined?

Can Tag Distance From a Reader Be Precisely Determined?

Posted By RFID Journal, 09.05.2013

Is it possible to measure the distance of an RFID chip from a scanner, as long as it is within 1 meter of the scanning device? If so, would it require a bulky expensive scanner, or would something light suffice?

—Name withheld

———

Unfortunately, it would be very difficult to determine the distance between a tag and a reader with any precision. Many passive ultrahigh-frequency (UHF) readers, including handhelds, can measure the received signal strength (RSS) from a passive tag. However, RSS can be affected by waves bouncing off a floor or metal shelving, and it is difficult to translate RSS into a precise distance from a reader to a tag. I believe the level of precision required within 1 meter (3.3. feet) would be beyond what most interrogators currently available can provide. Perhaps some of our readers who design and build such devices might be able provide a more detailed answer by posting information below.

—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!

Next Post
How Can We Minimize the Failure Rate of ...
Previous Post
Do Mobile Phones Interfere With Passive ...
PREMIUM CONTENT
Case Studies Features Best Practices How-Tos
RFID JOURNAL EVENTS
Live Events Virtual Events Webinars
ASK THE EXPERTS
Simply enter a question for our experts.
TAKE THE POLL
JOIN THE CONVERSATION ON TWITTER
Loading
RFID Journal LIVE! RFID in Health Care LIVE! LatAm LIVE! Brasil LIVE! Europe RFID Connect Virtual Events RFID Journal Awards Webinars Presentations
© Copyright 2002-2016 RFID Journal LLC.
Powered By: Haycco