TI RFID evaluation kit


by citizencoolgu
Tags: rfid
citizencoolgu
citizencoolgu is offline
#1
Mar15-11, 01:39 PM
P: 2
Hi,
I've been doing some work with a TI RFID evaluation kit and I noticed that when I place one of the tags onto metal, they don't work. These are passive tags that respond to a signal from an antenna after being charged through induction and I was just curious as to why they can't be placed directly onto metal.

Thanks.
Phys.Org News Partner Physics news on Phys.org
The hemihelix: Scientists discover a new shape using rubber bands (w/ video)
Mapping the road to quantum gravity
Chameleon crystals could enable active camouflage (w/ video)
Drakkith
Drakkith is offline
#2
Mar15-11, 04:34 PM
PF Gold
Drakkith's Avatar
P: 11,057
If I had to guess, I'd say that the metal is absorbing the RF signal, or at least enough of it so that the tag isn't picking up a signal. I can't be sure though.


Register to reply

Related Discussions
RFID Project Electrical Engineering 1
RFID - Cloneing Computing & Technology 1
field as a driver for a passive circuit and antennae Electrical Engineering 3
small RFID Engineering Systems & Design 4
maximum range (RFID) can function Electrical Engineering 5