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HI all
I built a transformer made by two spiral inductor in ADS Momentum and simulate the coupling coefficient of the transformer . Its K is only around 0.4 at in 5GHz.
I tried different layout method such as symmetric and stacked layout . I also increased the size the two spiral inductor , my...
Thanks a lot . I understand that R= ρ*L/S
S is the cross section area
It seems that the resistance can be reduced by increase area , right?
But when frequency goes high , due to skin effect, the current is mainly on the surface, am I right? so still this thicker metal can increase the Q?
I want to design a two stage Op amp .
There is some trade of for the gm of the first stage , you want high gm1 but gm1 can not be too high .
I did some homework for 0.35um CMOS tech with certain spec , now I want to re do it in 0.18um CMOS tech , but I don't have any spec . So I think I can...
I have the same problem . I do the one port SP analysis .
Z11 = R+jωL
I can plot the "jwl" but I don't know how to plot L ?
I noticed there is another post asking about the independ variable "freq" in 2007 but no one answers that . It says "unbound variable "
So the question is still how...
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