TI RFID evaluation kit

by citizencoolgu
Tags: rfid
citizencoolgu is offline
Mar15-11, 01:39 PM
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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.

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Drakkith is online now
Mar15-11, 04:34 PM
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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.

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