I need information regarding the setting of the Floquet boundaries.
What is the Floquet mode. Moreover, what is the X and Y-prim in floquet mode setting, by setting the value of the x and y-prime, it provides some values for Beta and alpha, and TE and TM as well. Moreover, what are the Alpha and Beta.
In electromagnetic scattering problems, a 'Floquet mode' is a discrete harmonic of the plane-wave spectrum for a periodic structure. I'm not a user of CST software but I suspect that the variables you refer to relate to the period of the lattice and perhaps angles between lattice vectors. If you consult any of the numerous papers on Frequency Selective Surfaces (FSS) that have been published over the last 30 years or so, you will see plenty of detail about Floquet modes. There are also some good text books available now. Key authors to search for would be Raj Mittra, Ted Parker, Ben Munk and Yiannis Vardaxoglou. I've also published a few FSS papers myself.
Good luck!
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