SOmebody pls help..How to prove its a metamaterials?

[chailingleow]

metamaterial debate

Hi all,

I designed circular and rectangular split ring resonator and the project is done.But somebody asked me to prove my design is a metamaterials?

Anybody have idea how am i to prove it using em simulator?i am using mwo and sonnet.

Thanks.....

Very urgent!!

 

[imodelit_moderator]

imodelit

Dear chailingleow,

You can plot the omega-beta diagram and show the left handed region.

Best Regards,
imodelit Moderator

 

[wandering heart]

omega-beta curve

Metamaterial is not necessarily LHM.
Generally speaking, as long as the period is much smaller than the wavelength your SRR can be regarded as MTM.

 

[chailingleow]

Dear chailingleow,

You can plot the omega-beta diagram and show the left handed region.

Best Regards,
imodelit Moderator

Hi,

How to plot omega beta diagram??can u explain in a detail way?how to plot using mwo or sonnet?

Rdgs,
Chai Ling

 

[imodelit_moderator]

Dear chailingleow,

Kindly, check this post . It contains tutorials to simulate and plot dispersion curves of metamterials. The main idea is based on formulating the dispersion curve as a function of S-parameters or ABCD matrix of the MTM unit cell.

Best Regards,
imodelit Moderator

 

[AmirAgha]

Hi

omega/beta diagram is not for MTMs its for EBGs and PBGs. for MTMs, in the best way you should extract the effective relative mio-epsilon versus frequency and it is a hard work to extract the parameters from the S-parameters. So the best way is to debate on simulated S-parameters, I mean to explain the s11 and s12 behavior. you can compare it with others SRRs S-parametres to prove the behavior. For being the MTMs it mustn't be only the DNG, it can be a material with only negative mio or negative epsilon or both quiet near zero, as a perfect lens.

best regards,
Amir

 

[imodelit_moderator]

Dear AmirAgha,

Chec the attachment of that post

Best Regards,
imodelit Moderator

 

[chailingleow]

Hi all,

I feel that it very complicated ..what u guys suggest?Do u have any simpler way?
Maybe just plot H-field ,E-field,current distribution?

Thanks...still urgent

Rdgs,
Chai Ling