I'm looking to build a timing system base on passive RFID transponder. This is how I see it :
- An antenna to "question" the tag
- An antenna to receive tag unique ID
- A tag with unique ID
I would like to buy a lot of transponders on internet (like this one). My question is :
If I want to build my own antenna, is this reasonable possible to do? From there, where should I start looking for technical information about those system?
What about the "questioning" antenna? It doesn't seem to be really complicated. How is it working?
My question may be too evasive for some of you, but is still relate to circuit designing. Any answer will help me to identify more precise questions.
The timing system would be for running event. So, I won't need a system really fast for this