Re: [oc] Project suggestion: RFID tag reader

[Rudolf Usselmann <rudi@asics.ws>]

Thanks for the inside in these tags. I think I'll sleep a bit better now ;*)

rudi
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On Wednesday 20 November 2002 01:43, Harvey, Wilbur wrote:
> RFID tags use the model of a loosely coupled transformer.
> The "reader" is, in reality the primary, and the tag is the secondary.
> At 13Mhz, you can to out to about 1 to 1.6 meters using the standard
> credit card sized tags and 1.2 meter dia reader "antenna". It would not
> ever be possible to read them over long distances.
>
....
>
> Typically the tags each have a unique ID code, and most have the ability
> to be programmed with some data, that can be whatever you like, like the
> TI and Philips tags. That is why they are used for disposable airline
> baggage tracking tags.
>
> Wilbur Harvey - Engineer
> Spirent Communications Inc., www.adtech-inc.com
> First Hawaiian Center, 999 Bishop St.. Suite 2700
> Honolulu, HI 96813
> Tel: +1 (808) 440 3494, +1 (808) 440 3363 (Direct)
> email: wilbur.harvey@spirentcom.com



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