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Hi all, By the way from this question for a while, I have a new question in Frequency domain of CST.
Could anyone please tell me If I want to simulate TEM mode in Frequency domain, what should I do ?
Because I have seen only TE and TM mode when I set floquet port.
Best regards,
Sangwoo
Hi all, Thanks a lot. It is quite work because it now obtains Far field results (RCP and LCP). But I'm afraid that this method will make the structure not been periodic structure. Could you suggest this and further step please?
Very thanks
Hi Jamesanton, I had already do following your advice, but it did not work. There are not s-parameter of RCP and LCP. It shown that because of parallel symmetry plane of waveguide port, so no far field calculation possible. Could you explain me thoroughly please?
Thanks in advance
Hi everyone,
I would like to ask for help. I have a problem about how to generate circular polarization (RCP and LCP) for the periodic structure as metamerials by CST. Generally, I simulate the structure by waveguide port and set boundary conditions as follows: Htan=0 in z direction...
Hi everyone,
I have the same problems as Gong, but I also find a data flip in Imaginary part of mue and epsilon. If anyone can manage this problem, please tell me too.
retrieve parameter edaboad
I think you should add part C of this paper for more accuracy
they tell how to determine n and z into 4 condition
|z'|>=delta and z >=0
|z'|>=delta and z < 0
|z'|<=delta and |eink0d|<=1
|z'|<=delta and |eink0d|> 1
but i still not clear in part D (determination of...
rcwa effective index
Hi all,
this topic is very useful for me
now I m doing this work (Retrieving the refractive index) follow smith's paper
SAJ25, I want to ask you for decribtion in your matlab code :
for gh=1:length(n)-1
n(gh)=n(gh)*sign(imag(alpha(gh)));
end
Thanks you very much
Thanks for snkhan's advice. I have a problem like smithjim. I think that in snkhan's model is a co planar srr, but i want to simulate the mtm structure (periodic structure, because mtm will show negative mue and eps in the periodic structure) for check it properties. Could you give me a...
metamaterial wikipedia
I think that It should built a waveguide box that the left and right side of box is pml , another side is pec/pmc , and then put the unit cell of mtm structure in waveguide box and generate plane wave from left thought mtm structure to right. From this process you will...
Hi jithesh
I want to ask for your suggestion about what should i do, if I want to split between the main region (free space) and umpl region. ( the same as 3d pml but replace by upml) I have a problem in interface region when joy it together.
Thank you.
2d fdtd code matlab
Hi khalmusa
You can place the incident soure in the range before the connecting boundaries ,so in this program you could place the incident soure not exceed 7 point
Thank you MusicMan for your helpful.
tf sf technique
Can someone suggess me, about how to generate plane wave by TF/SF technique (FDTD)in matlab for 1,2,and 3D. I had followed taflove's books but it doesn't work.
Does anyone can explain it?.
best regards,
Re: 3D UPML in matlab
It's my 3d upml code Reference by formula in Taflove's book.
You should have "Computational Electrodynamics FDTD" it's Taflove's book.
It'll be helpful for do your project and write a code.
Hope this help
regards
Dear everyone
I have writen 3D PML (based on Barenger) code in matlab but I have confused when I joint between pml and main together at interface region , So I have changed to write in UPML . I would like to ask for suggestion in this method ,I am not sure that in main region also must...
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