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Hi all,
I am looking for a way of converting 4 port single ended s-parameters to 2-port differential s-parameters. I know that Matlab has a script for that (s2sdd.m) but I don't have the RF tool box. Can anyone provide formulas for the conversion ? Equations/scripts anything will help.
Thanks...
converting y-matrix to s-matrix ads
You can convert it to Y-parameters and then, you can calculate L=(1/2*pi*f)*imaginary(1/Y11) for an inductor with port 2 grounded, else it will be 1/Y12 instead of Y11 if you need the inductance from terminal 1 to 2.
svarun
Meshing tools
Hi all,
If you are working in electromagnetic CAD, which mesher have you found to be the most useful one for your applications ? I need some inputs on the I-DEAS and the PATRAN meshers.
Thanks
svarun
oxide thickness 180nm
Hi all,
Where can I get the IBM 180 nm RF process stackup details (Si thickness, Oxide thickness, Metal thickness etc). Googling is not giving me any worthwhile results.
Thanks
svarun
Re: On chip Spiral inductors and substrate dielectric consta
Thanks czn
I was looking at what happens if you vary the epsilon ? Does 'L' get affected ? L is magnetic property and epsilon is related to dielectric property. Will L depend on epsilon at all ?
svarun
Hi all,
I just want to know what effect the dielectric constant of the substrate has on the 'L' of a spiral inductor.
Can it be said that only 'C' depends on epsilon and not 'L' ? How about 'Q' ?
Thanks
svarun
Hi all,
I have a question on noise simulation in analog circuits. Suppose I am doing the frequency domain analysis of an amplifier at a frequency 'f' with thermal noise coming in from the resistors. I want to see how much noise voltage is present at the output.
How is the noise be modelled in...
Well, that is a part of the question. The usual thing is to measure transmitted field and then get the Tx coefficient and then find the reflected coefficient. How do I go about in this case ?
What I am doing is to have a slab, draw airbox around it and put periodic boundary conditions on 4...
Hi all,
I have a slab of dielectric in free and a plane wave is incident. I want to find the reflection and transmission coefficients. How do I do this ?
Thanks
svarun
+hfss +k vector
Hi savedadogs,
Yes !. I found that at the interface between media (n=1 and n=-1), the normal component of E and H fields changes directions and the tangential component remains same.
I was wondering whether there is a way to plot the 'k' vector in both the media to show that...
negative epsilon hfss
Hi all,
Is it possible to input negative epsilon and mu values in HFSS 9.2/10.1 and get the results that show negative refractive index ? or will it just take n=sqrt(abs(epsilon*mu))
svarun
Hi all,
Can anyone let me know about the complexity of FDTD ? How does the solution time and memory increase with the number of discretizations ?
Thanks
svarun
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