Simulation of split ring resonator (SRR) with HFSS

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rachidrian

Joined: 03 May 2006
Posts: 5

08 May 2006 3:21 split ring resonator in hfss

I want to redo this article:
Electromagnetic parameter retrieval from inhomogeneous metamaterials
but I have find a big problem in the phase of S11. between 13.2 GHz and 20 GHz
helpe me for to find this probléme?
to see the strusture of SRR +article (fil joinig)
thank's

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Last edited by rachidrian on 08 May 2006 3:36; edited 2 times in total

Zottiri Kusuta

Joined: 02 Sep 2005
Posts: 75
Helped: 13
Location: Columbus, OH

09 May 2006 20:37 hfss srr

hfss uses exp(jwt) time dependence whereas the authors use exp(-iwt) time dependence...

rachidrian

Joined: 03 May 2006
Posts: 5

09 May 2006 23:52 split ring resonator

Here you are the project.

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rachidrian

Joined: 03 May 2006
Posts: 5

14 May 2006 0:37 srr hfss

have any one trainig works of SRR WITH HFSS simulations ?

perejferrer

Joined: 31 Jan 2006
Posts: 31
Helped: 8

12 Feb 2007 13:00 split-ring resonator (srr)

Maybe you will have solved your problem. But for the Post, I have tried several simulations of the provided file. First of all you have to extend the sweep up to 20 GHz. Probably the Solution Frequency is low, but the numerial problem persists. Phases of S11 and S21 seem to be swept. Sometimes, the paper's figures are uncomplete, or the given simualting conditions are not the final ones, not the simulating code.

That's my opinion. Maybe someone else could add more info. Bye,

Pere

choter

Joined: 08 Jun 2007
Posts: 4

08 Jun 2007 6:07 split ring resonator srr simulation using hfss

I cannot understand
Why do you use deembed distance 2.5 mm????

cuongtran

Joined: 06 Feb 2007
Posts: 182
Helped: 4
Location: WhiteHouse

11 Jun 2007 14:25 simulation srr

I tryed to correct it, see its phase :

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choter

Joined: 08 Jun 2007
Posts: 4

20 Jun 2007 1:03 srr resonator

can you give the reference of smith.pdf to read because I cannot download?

asondas

Joined: 04 Jul 2007
Posts: 18
Helped: 1

04 Jul 2007 12:38 srr parameter retrieval

hi coungtran;
i downloaded the zip file but only S11 graph can be seen in this file. how can we plot the S21 parameter?
thanks for help

cuongtran

Joined: 06 Feb 2007
Posts: 182
Helped: 4
Location: WhiteHouse

04 Jul 2007 13:18 simulation of split ring resonator hfss

hi asonds,
since it has not got the second waveport, you can not plot the S21 i think, you should add the 2nd waveport confronted with 1st one in the same box and resimuler.

savedadogs

Joined: 11 Dec 2003
Posts: 95
Helped: 11
Location: California

13 Jul 2007 18:32 srr and hfss simulation

Has anyone been able to reproduce the results of the paper? I simulated the same structure in HFSS (Fig. 2 of the paper) and the results are very different then what they get for S11 and S21.

aliatmaz

Joined: 26 Jun 2007
Posts: 9

27 Jul 2007 18:41 split ring resonator hfss

hi coungtran;
i downloaded the SRR1correct.zip file. I added the the second waveport into the air box. I plugged the equations to obtain the refractive index, permittivity and permeability. But I could not obtain the same result as in the smith paper.
Can you help me to obtain the same results?
Thanks for help

aliatmaz

Joined: 26 Jun 2007
Posts: 9

29 Jul 2007 19:59 srr split ring

hi

Has anyone been found the same results of the smith paper? If yes, please help me to find the same results. (Especially, the refractive index, permittivity and permeability)

Thanks...

decblue

Joined: 21 Aug 2007
Posts: 8
Helped: 1

03 Sep 2007 9:01 parameter retrieval srr code

I have the same problem , my |S| . Re(Z) and Arg(S) figure are similar to it on paper , but the Re(n). ε and µ are different .

could someone tell me what's my problem ?

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sibel

Joined: 25 Oct 2007
Posts: 2

25 Oct 2007 15:21 ring resonator design using hfss 11

hi everbody,

I have the same problem. I obtained S-parameters but couldn't obtain the correct effective parameter values. If there is anybody that can explain obtaining these parameters?

SAJ25

Joined: 13 Mar 2007
Posts: 223
Helped: 20

05 Mar 2008 22:20 hfss simulation split ring resonator tutorial

hi all you should write the matlab code of n and z and epsilon and mu that represented by smith in his paper on physical review 2005.

Jeff McGuirk

Joined: 14 Mar 2008
Posts: 5

25 Mar 2008 20:41 hfss 11 resonator

All,

I don't know if this is still desired or not, but I have been able to simulate the unit cell shown in Figure 2 of the paper, "Electromagnetic parameter retrieval from inhomogeneous metamaterials." The magnitudes of for my S-parameters match what is shown in Figure 3a. The phases of my S-parameters are opposite of what is shown in Figure 3b (i.e. I can plot the correct phase if I plot -Arg(S21)).

Based on these results, I took the S-parameters (I inverted my result for Arg(S21)), imported them into Matlab, and extracted the refractive index, the impedance, the permittivity, and the permeability. My graphs precisely match those shown in Figures 3c, 3d, 3e, and 3f. I will gladly share these codes with anyone that likes them--I didn't post initially because this thread has been inactive for awhile and I didn't want to waste time if it wasn't necessary.

I would like to know why the phases for my S-parameters are opposite to what are shown in the paper. Someone posted this was because the authors use an e^(-iwt) time convention versus the engineering convention of e^(jwt). I know this difference in convention causes issues, but I don't understand it enough to know the exact impacts. Any help would be great.

Pleasant day,
Jeff

SAJ25

Joined: 13 Mar 2007
Posts: 223
Helped: 20

16 Apr 2008 4:15 floquet deembed

hi jeff
please upload your matlab code.
regards

bjamali

Joined: 18 Jun 2008
Posts: 1

18 Jun 2008 8:58 matlab code split ring resonator

Here is my simulation of SRR, can you upload your Matlab code please

bitele

Joined: 17 Aug 2008
Posts: 25

17 Aug 2008 15:04 split ring resonator ports hfss

hi jeff
please upload your matlab code.
Thank you very much.

SAJ25

Joined: 13 Mar 2007
Posts: 223
Helped: 20

17 Aug 2008 21:11 split ring resonator ports

hi all
i upload the matlab code for refractive index and permitivity and permeability extraction from the S-parameters based on smith paper for a SRR in http://www.edaboard.com/viewtopic.php?t=263849&highlight=
i hope to investigate and run this code and tell me how you find it?
is it correct or no for all structures.
regards

kelvinn

Joined: 16 Sep 2008
Posts: 1

08 Jan 2009 1:37 split ring resonator design hfss

Howdy...

Smith's paper (2005) is correct if you rework the maths for exp(j*w*t) so that you can use the results direclty from HFSS without the need to modify the phase of S21.

However, if you simulate his SRR-wire medium in HFSS using Floquet ports, you will get subtly different results that depend on the Floquet port - structure seperation. See my post on http://www.emtalk.com (my member name is kelvinjn in that forum)

If anyone has experienced this problem with HFSS I would be keen to discuss.

Cheers...

salva80

Joined: 07 Apr 2008
Posts: 2

29 Jan 2009 2:35 hfss simulation split ring resonator

Hi every 1,
I'm working on a SRR structure, the same as from pendry IEEE Vol 47 No 11. As everybody above I need to retrieve the effective parameters ( eps, mu) from the scattering parameters calculated using HFSS. Using the retrieving approach as in PRB 65 195104 or equivalently PRE 71 036617, I would expect the same results as stated in PRE 68 065602,(negative Re(mu) and Im(eps ) and positive Re( eps) and Im(mu) within the resonance band) but the results are completely different. I probably don’t impose the proper conditions for the signs of Re(z) and Im(n)
The simulation is performed just for a unit cell of SRR
The excitation is done by mean of a waveport with the Efield parallel to the SRR plane and the H field parallel to the SRR axis
As boundary condition I use PEC for the surfaces normal to the electric field, while PMC for the surface normal to the H field, (as from Journal of applied physics Vol 90, N. 10), this should assure that the structure is seen as a unit cell of an extended periodic structure.

I attached the HFSS file, the matlab file and the data that come from HFSS and all the references I mentioned.

I hope to get some good hints.

salva

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abdoeng

Joined: 22 Feb 2004
Posts: 685
Helped: 14
Location: EGYPT

29 Jan 2009 19:26 split ring resonator matlab

hi all,i see along discussion about the simulation of SRR in HFSS
here very good article from HFSS using floquet mode,really very good article
here it
regards to all

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