Hello, I have been trying to estimate the Noise Figure of the X440. I looked through all the documentation I could find and couldn't find it anywhere, so I tried to calculate it myself.
It looks like the ZU2xDR RFSoC has a NSD of -146dBFS/Hz @ 2.4GHz ( https://docs.amd.com/r/en-US/ds926-zynq-ultrascale-plus-rfsoc/RF-ADC-Performance-Characteristics) and the Full Scale Input is 1Vppd (0.707Vrms) @ 100ohms ( https://docs.amd.com/r/en-US/ds926-zynq-ultrascale-plus-rfsoc/RF-ADC-Electrical-Characteristics) . Based on this information I calculate NSD of -139dBm/Hz [-146dBFS/Hz + 10log10(0.707^2/100Ω*1000)], so -139dBm/Hz - -174dBm/Hz gives Noise Figure of 35dB? Add the 1.5 insertion loss of the TCM2-63WX+ on the Daughterboard ( https://files.ettus.com/manual/page_fbx.html), gives an approximate noise figure of the X440 at 36.5dB for 2.4GHz. Is this correct? Seems high, I don't have much experience calculating noise figure from ADC's so I'm wondering if I'm missing something. Thanks, Steve
_______________________________________________ USRP-users mailing list -- usrp-users@lists.ettus.com To unsubscribe send an email to usrp-users-le...@lists.ettus.com
