On Tue, Sep 19, 2006 at 11:55:51AM +0200, Erlend Barstad Strand wrote: > Hello > > As a pre-project to my master-project I am considering making a RFID > receiver with gnuradio, atleast attempt to. However I recently noticed > that an RFID detector/receiver is mentioned as a project under > investigation or progress in the "Exploring GNU Radio"-document.
Sorry for the late reply, but I didn't have a lot of time for keeping up with mailinglists recently (busy with other free hardware RFID work for http://openpcd.org). When you talk about RFID, what kind of system are you talking about? Which frequency? Which protocols? Magnetic coupling, backscatter or SAW? I have quite a bit of experience with RFID on a protocol level. My RFID hardware related experience is limited to 125kHz and 13.56MHZ magnetic coupling systems at this point. I personally would love to see an ISO 18000-6 (UHF RFID) implementation for gnuradio. The biggest challenge is the analog frontend because of the 80dB difference between Tx and Rx. you will probably need two antennas, and switch off / attenuate the Rx path while transmitting. If you have any questions, just ping me. Cheers! -- - Harald Welte <[EMAIL PROTECTED]> http://gnumonks.org/ ============================================================================ We all know Linux is great...it does infinite loops in 5 seconds. -- Linus
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