2D Cellular Automata TLM

[pangait12]

Thanks, i already had that article actually, but somehow still can't write a code for the simulations. seem im not good enough with the programming, really having a hard time. Anyway, thanks again for the reply.

[janne808]

Just look at the scattering figure. You need to iterate this for each line in the node (not just for line 1 like in the picture) and sum up the results in each line.

The hard part with these automata methods is to figure out a clever bookkeeping method that is compatible enough with the computer hardware. I'm guessing picking it up from my code would actually be more difficult than reading the paper with figures.

[pangait12]

yeah, it would be a great help if you can suggest any good articles, reading material for me then. Thank again.

[janne808]

Johns, P.B. & Beurle, R.L. 'Numerical solution of 2-dimensional scattering problems using a transmission-line matrix' Proc. IEE, Vol. 118, No.9, 1971, pp.1203-1208

Try to locate this one, it's a good resource.

[pangait12]

i've read the tlm method but somehow i cant figure out how to relate it when comes to writing a code. i have none example of code that i can refer to as to start. any simple example can do. No, i do not know how to do the incident and reflection impulses. thx for the reply.

[pangait12]

It would be a great help if you can do so. I really appreciate your help. Thanks a lot.

[pangait12]

do u mind sending me your code?

[pangait12]

I've been trying to do the same simulation using matlab for almost two months now. but still couldn't make it.

[janne808]

i can point to the original paper which derived the method from kron's network analyzer work. do you have it? there are some more recent articles in the literature aswell but i suggest the original paper since it gets deeper to the properties of the discrete nature of the lattice.

anyway there's not much to it. you need two matrices in matlab, one for incident impulses and one for reflection impulses. have you done that?

[pangait12]

great, what software r u using at?

[janne808]

it's a self cooked algorithm on matlab. i guess i should update with the latest version of it which includes first order absorbing boundaries.