Mesa, FranciscoRodriguez-Berral, RaulGarcia-Vigueras, MariaMedina, FranciscoMosig, Juan R.2017-01-242017-01-242017-01-24201610.1109/NEMO.2016.7561580https://infoscience.epfl.ch/handle/20.500.14299/133263WOS:000389214000003The equivalent admittance of a 2-D array of printed metallic patches/apertures is obtained here by extending a precedent equivalent circuit approach reported by some of the authors. The goal of the present extension is to cover more complex situations like multi-resonant scatterers, several scatterers per unit cell, and conical incidence. After studying the limits of validity of the equivalent circuit approach, it is found that this quasi closed-form approach is a very efficient numerical tool which also provides a very convenient physical insight into the involved electromagnetic phenomena.Circuit modelingfast numerical methodsscattering of periodic structurestext::conference output::conference proceedings::conference paper