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Integral Equation Modeling of Doubly Periodic Structures With an Efficient PMCHWT Formulation

Abstract : A surface integral equation modeling is described for complex doubly periodic structures. To avoid long computations of the slowly convergent pseudoperiodic Green's function, fictitious surfaces between translated unit cells are set in order to bound regions of the structure within the symmetry cell and use the free-space Green's function. The integral operators on top and bottom surfaces are computed with an algorithm originally used for planar frequency-selective surfaces. This approach uses a unique periodic PMCHWT formulation in all the regions, with two different kinds of Green's function. The method and its advantages are illustrated by two cases in the near-IR domain and in the radar domain. A frequency selective structure is studied, that shows a large flat-top bandwidth under oblique incidence and TM polarization.
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https://hal.archives-ouvertes.fr/hal-01636345
Contributor : Fatima Pereira <>
Submitted on : Thursday, November 16, 2017 - 2:40:01 PM
Last modification on : Saturday, April 24, 2021 - 3:33:44 AM

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Samuel Nosal, Paul Soudais, Jean-Jacques Greffet. Integral Equation Modeling of Doubly Periodic Structures With an Efficient PMCHWT Formulation. IEEE Transactions on Antennas and Propagation, Institute of Electrical and Electronics Engineers, 2012, 60 (1), pp.292 - 300. ⟨10.1109/TAP.2011.2167898⟩. ⟨hal-01636345⟩

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