On 04/19/2011 11:38 AM, Colby Boyer wrote: > Hi All, > > In RFID applications, a reader receives (backscatter from RFID tag) and > transmits (constant tone) at the same frequency. With commercial > readers, a single LO will be shared by the RX and TX chain. However, in > the USRP case, two separate daughter boards are used so different LOs > are in use for the RX and TX chain. So you should end up with some > frequency offset in RX chain due to mismatched clocks. > > Is it possible to lock the LOs of a TX daughter board and a RX daughter > board, as you would for a traditional MIMO 2 TX or 2 RX setup? There > appears to numerous discussions and examples of the latter. I'm thinking > it would be possible. But I'm more of a systems guy and less of a RF > hardware guy, so any comments would be appreciated. > > Thanks, > Colby
As long as you set them to the same frequency, they're already locked. No need to do anything different. Matt _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
