On 10/11/2010 01:34 PM, Jorge Miguel wrote: > Hi everybody! > > I read a lot of posts about XCVR2450 and I am still confused about its > performance. > I would like to set up a pulse doppler radar application around 2.4 > GHz with USRP2 + XCVR2450 > > My simple questions are: > Does XCVR2450 work in full duplex mode? > If yes: Does anybody know the isolation between tx and rx (Whole > daughter board: transceiver,amplifier and RF switch) ? > If not: Does anybody know the time that XCVR2450 takes to switch from > tx to rx state ? > > Many thanks in advance, > Jorge. > The XCVR2450 suports same-frequency full-duplex, which would be perfect for radar applications. It uses a MAX2829 802.11 world-band transceiver chip, which has only a single VFO in it, so the RX and TX sides have to be on the same frequency.
The TX/RX isolation, based on reading the spec sheet for the switch, a HWS383, gives 29.5dB isolation for the 2.4Ghz range, and about 20.5dB isolation for the 5GHz side. I suspect that your application will be just fine on this card, using full-duplex, same-frequency mode. -- Marcus Leech Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org
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