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Comsol 4.2a, RF MODULE, PML

Posted 19 sept. 2012, 13:38 UTC−4 RF & Microwave Engineering Version 4.2a 4 Replies

Nikola Bralovic
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Dear All,


I have question about this module which I uploaded.

Medium is air, substrate is glass, and I want to put some dipole on that glass. My question is about PML.

As I know, I should put always same material PML and adjoining medium becuase of the discontinuity in refractive indices.

But what to do with this configuration which I uploaded?

It is easy to set up one half of PML is medium, one half is substrate, but what will happened between two halves of the PML ? Does any of you done these simulations? Is there some strong influence of that on results??


Thank you for any answer.

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4 Replies Last Post 21 sept. 2012, 04:11 UTC−4
Edgar Kaiser
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Posted: 1 decade ago 20 sept. 2012, 03:57 UTC−4
Hi,

I would suggest to completely surround the substrate with the medium and keep a distance of at least a wavelength to the PML. And you can always try different setups and compare the results. That's the beauty of computer models, right?

Cheers
Edgar
Hi, I would suggest to completely surround the substrate with the medium and keep a distance of at least a wavelength to the PML. And you can always try different setups and compare the results. That's the beauty of computer models, right? Cheers Edgar
Nikola Bralovic
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Posted: 1 decade ago 20 sept. 2012, 04:42 UTC−4

Hi,

I would suggest to completely surround the substrate with the medium and keep a distance of at least a wavelength to the PML. And you can always try different setups and compare the results. That's the beauty of computer models, right?

Cheers
Edgar



HEllo Edgar,

Thank you very much on answer.
I am new so I don't know yet for these tricks.

Regards,

Nikola

[QUOTE] Hi, I would suggest to completely surround the substrate with the medium and keep a distance of at least a wavelength to the PML. And you can always try different setups and compare the results. That's the beauty of computer models, right? Cheers Edgar [/QUOTE] HEllo Edgar, Thank you very much on answer. I am new so I don't know yet for these tricks. Regards, Nikola
Alexander Kuznetsov
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Posted: 1 decade ago 20 sept. 2012, 16:36 UTC−4

It is easy to set up one half of PML is medium, one half is substrate, but what will happened between two halves of the PML ?


That's the right way to do it. It's not a problem to contact two PMLs with different materials.
[QUOTE] It is easy to set up one half of PML is medium, one half is substrate, but what will happened between two halves of the PML ? [/QUOTE] That's the right way to do it. It's not a problem to contact two PMLs with different materials.
Nikola Bralovic
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Posted: 1 decade ago 21 sept. 2012, 04:11 UTC−4


It is easy to set up one half of PML is medium, one half is substrate, but what will happened between two halves of the PML ?


That's the right way to do it. It's not a problem to contact two PMLs with different materials.


Thank you very much Alexander on your answer, it is very very helpful.


Regards,

Nikola

[QUOTE] [QUOTE] It is easy to set up one half of PML is medium, one half is substrate, but what will happened between two halves of the PML ? [/QUOTE] That's the right way to do it. It's not a problem to contact two PMLs with different materials. [/QUOTE] Thank you very much Alexander on your answer, it is very very helpful. Regards, Nikola

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