Thanks Marcus. The reason why I do not want to attenuate is because I want to receive a high-powered signal and low-powered signal at the same frequency.
If I attenuate then the low-powered signal will be reduced and if I go beyond the noise floor, I might see it. The goal was to stretch the difference in power between the high-powered signal and the low-power. But now if I think about it no matter what I will be limited to my Dynamic Range. Marcus D. Leech wrote: > > On 01/13/2011 10:33 AM, Euripedes Rocha Filho wrote: >> Why not just buy a USRP + WBX? >> >> 2011/1/13 sirjanselot <acosta.j...@gmail.com >> <mailto:acosta.j...@gmail.com>> >> >> >> Hello, >> >> I am looking to buy an Altera DSP FPGA Kit (DSP Development Kit, >> Stratix III >> Edition) for school research but I'm not sure how i am going to >> build an >> RF-Front End for it. I am looking to receive signals up to +30 >> dBm from 30 >> MHz - 2 GHz with bandwidths up to 50 MHz. This the kit I am >> looking to >> purchase: >> http://www.altera.com/products/devkits/altera/kit-st3-dsp.html >> >> This kit comes with two 150 MSPS 14-bit ADCs and 250 MSPS 14-bit >> DACs. My >> question is it possible to buy a Commercial off the Shelf >> Front-End that >> provides the necessary inputs? >> >> Is there something special that I have to do in order to receive >> signal >> levels up to +30 dBm so that my ADCs do not saturate? >> > Attenuators. At +30dBm, the concern isn't saturation, but *device > destruction*--it would be a shame > to destroy your $2800.00 Altera development board. > > > > -- > Principal Investigator > Shirleys Bay Radio Astronomy Consortium > http://www.sbrac.org > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > -- View this message in context: http://old.nabble.com/Building-an-RF-Front-end-for-DSP-FPGA-Kits-with-ADCs-tp30662773p30666803.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
