Hi baab,
its been a while since I read about all of that...
Quote:My thought now is that I need to simulate quality factor Q of an inductor in TSMC 0.13um and then calculate parasitic resistance from that Q.
You can just assume a typical value for the Q factor (10 for example), and use that to find NFmin. Remember, its iterative. So step one you assume say 5 nH and based on Q = 10 you know the resistance. Then assume your noise circle gives you the optimum L of 6 nH. So you would recalculate R based on 6 nH and Q = 10, and then find the new optimum value. Suppose it is 5.8 nH. You then recalculate R for 5.8 nH and Q = 10, and so on and so forth...
Quote:2. Where I need to use Noise circle analysis? At present, I am reading about them but I still not really sure.
I don't remember too well what exactly the noise circle plots, but I don't know how you can sweep NF from 1.5 dB to 1.8 dB. I'm guessing the noise circle plots lines of constant NF, and you need to chose the line with the lowest NF? Maybe somebody else can answer this...
I think its all discussed very well in RF Circuit Design by Chris Bowick.
regards,
Aaron