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k-vector for Floquet periodicity
Posted 13 ago 2021, 21:32 GMT-4 Low-Frequency Electromagnetics, RF & Microwave Engineering, Wave Optics 0 Replies
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I am doing 3D simulations of a periodic metasurface. Since an unit cell is simulated, periodic boundary conditions are used. I implemented the scattered field formulation without any port. When selecting Floquet periodicity, the k-vector must be choosen from either the periodic port or user defined values. Since I do not have any port, I have to put it manually. A plane wave propagated along -z direction with x-polarization is used for the background field. In this case, what would be the k-vector for the Flouet periocity? I have put 0, 0, ewfd.k for x, y, z field, respectively since field only propagates along the z axis. Is it correct? If not, what should be the value of k-vector?
Hello Md Rabiul Hasan
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