Can we get band structure of PBG from MWS CST?

I think eigenmode solver can be used, (or General Purpose Frequency solver?), and sweep a parameter to get the dispersion diagram finally.

Is it practical?

BTW, anyone familiar with Empire? What about using Empire?

Thank you, guys!

In CST 2005, you can just follow the example in Eigen-Solver to get the dispersion diagram, group velocity and phase velocity by using the VBA it provides.

Just check it.

However, I found some difficulties in the open boundary condition in Eigen-Solver, since it must assign PEC instead of Open, then there are many other pesudo-mode appearing. You need to view the fields carefully to get the idea.

Ok.

Thanks!
Let me check it.

The eigen solver of CST MWS can not work under the open boudary condition, like ABC or PML. The solver can only run in a close model.
Secondary, CST MWS use FITD algorithm. Like FDTD, the solver can apply 6 boundary condition on outer surface of the simulation model system. So you can simulate square lattice PBG structure. If you simulate other than square structure, like hexagonal PBG structure, you can not apply periodic condition on 3 pair surface.

Then, it seems that I'm fortunate.
Thanks.

can anyone post the example model of calculating the bandgap of PBG/EBG surface using CST
looking for any sort of help.


thanks

can anyone post a figure of this plot here?

https://www.edaboard.com/ftopic252417.html
https://www.edaboard.com/ftopic250014.html

who can explain the relationship between dispersion diagram and band structure?
Any advice is welcome.

Hi any one can help me in the design and calculation procedure of square lattice please.can give me reply to my mail id bandaru.ramakrishna@gmail.com

Hello bandaru,

There are loads of threads in this forum explaining the designing of PBG. The most useful is reflection phase diagram and surface wave bandgap. Both procedures are explained in forum. Have a look and if u can't find it l'll tell u from where u find it.

Praful