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error in defining floquet port in skewed arrays

FMM28

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Hi

I am simulating a triangular array using floquet port. as was mentioned in the following post:


I defined three coupled lattice pairs using ansys electronics 2022. the problem is I get this error by defining the floquet port at the top of the unit cell :

[error] Port 'FloquetPort1': The exterior boundary of the faces for a Floquet Port must consist of pairs of parallel and equal length segments, displaced from each other by an integer linear combination of the lattice vectors.

there are the lattice pairs causing the problem since when i define two lattice pair (square array) there is no error.

how should I change the structure or boundary conditions to use floquet port?

thanks
 

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