The ideal SDR has the antenna directly connected to the ADC, and from there on all is done is software. We are not quite at that point yet, bit this new ADC from Analog Devices is a step in that direction...
http://www.responses.com/emw/380/9446.html?c=63r9t Its dynamic range (80 - 85 db of SFDR) is not enough to allow the above, but could be useable, at least at an experimentation level, preceding the ADC with an AGC-controlled front end (with all the disadvantages that such a solution implies...) 73 Alberto I2PHD ------------------------ Yahoo! Groups Sponsor --------------------~--> Get fast access to your favorite Yahoo! Groups. Make Yahoo! your home page http://us.click.yahoo.com/dpRU5A/wUILAA/yQLSAA/ELTolB/TM --------------------------------------------------------------------~-> Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/soft_radio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
