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# how to plot permittivity, permeabilitty and index "n" with CST2010?

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#### mitch81

##### Member level 1
hi
i want to plot a function of frequency of the permittivity, permeabilitty and refraction index "n" of an unit cell with CST microwaves 2010 (see figure below).
i can just represente S11 and S21, impedance Z.

#### Attachments

• unit omega cell.JPG
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hi
i never done before this but i saw this CST tutorial u can download from attach file

#### Attachments

• CST_APPLICATION%20NOTE__PERIODIC%20ARRAYS%20(FSS%20,%20PBG).pdf
1.2 MB · Views: 228
mitch81

### mitch81

Points: 2
thank you ferdow

---------- Post added at 15:03 ---------- Previous post was at 14:50 ----------

this tutorial is very interesting, but it don't presents permittivity and permeability just the S parameters.

hi
read this paper in that shows that formula u need
MICROSTRIP ANTENNA'S GAIN ENHANCEMENT USING LEFT-HANDED METAMATERIAL STRUCTURE
H. A. Majid, M. K. A. Rahim, and T. Masri Progress In Electromagnetics Research M, Vol. 8, 235{247, 2009
i hope it useful for u pls say if useful i like to know about that
my email:ferdows_j@yahoo.com

mitch81

### mitch81

Points: 2
thank you so much ferdows, i will try to export the S parameters to mathlab and see... thank, i notified your e-mail.

hi

I have a first problem!
The expressions of permittivity and permeability are given by complex S parameters (i think)!!!
But CST gives S magnetude (linear) and S(dB)!
What's the S paramters that you exported?

i will absolutly send you result... thank you for all

"sorry for my english! i speak french."

mitch81

### mitch81

Points: 2
hi ferdow
it's really difficult to export complex S parameters from CST, i used finally HFSS because you have possibility to enter equation and obstain all paramaters you need! it's very simple with HFSS

ferdows

### ferdows

Points: 2

Hi Mitch81,

I am facing a problem same as u. would you mind to share with me how you solve that problem and what is your finding.
may be you can email me something helpful.
mkezambo@gmail.com

best regards

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