Re: RFID reader design
- From: Mikko Kiviranta <Okkim.Atnarivik@xxxxxxxxxxxxxx>
- Date: Thu, 18 May 2006 13:50:15 +0300
Alchemist wrote:
I am trying to build a RFID reader for passive RFID tags like
1) Is it possible to read passive tags at a distance of 6m
2) Is it possible to build this reader.
Yes, our reader/tag combination (Palomar and its derivatives)
has approximately such a range. But for a practical system you
need to use a freguency at which the radiation is in the
freely-propagating regime (far field). Ours operate at 868 MHz.
I don't think a practical-sized near-field reader
can ever reach such ranges.
Not only the reader affects the maximum range; you also need
a good optimized tag.
5)Is it possible to detect direction and distance of RFID tag from the
reader
Now you are groping into the area of trade secrets...
Regards,
Mikko
.
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