This page contains block diagrams of the USRP and RFX2400 daughterboard. I generated these by aggregating information from a number of places. I'm not sure they're 100% correct. So, use them at your own risk.
I've annotated a few corrections. -eb
I.e., I2+jQ2 = (I1+jQ1) * exp(jwt).The effect of the NCO and multiplier are implemented using the CORDIC algorithm.
I.e., I2+jQ2 = (I1+jQ1) * exp(jwt).
In the diagram, G=gain and N=noise figure (dB) at 2.4 GHz
If anyone's interested in updating or correcting these diagrams, the OpenOffice source file is source:gnuradio/trunk/usrp/doc/usrp_rfx_diagrams.odp. The originals were exported as JPG, and then imagemagick was used to convert them to a reasonable size for web viewing. (If you do update these images, please send them and the updated source file to email@example.com for posting.)
注：USRP Rfx Diagrams（原文出处，翻译整理仅供参考!）