The wave concept iterative procedure (WCIP) is used to analyze arbitrarily shaped frequency selective surfaces (FSS). The WCIP method is developed from the fast modal transform based on a two‐dimensional fast Fourier transform algorithm. Using the proposed procedure, less computing time and memory are needed to calculate the scattering parameters of the FSS structure. The method is applied to the modeling of an FSS structure of a rectangular patch and a comparison with experimental results confirms good agreement.

The wave concept iterative procedure (WCIP) is used to analyze a quasi‐square open metallic ring frequency selective surface (FSS). The quasi‐square open metallic ring FSS is dual‐polarized. When the incident plane wave is polarized in a direction parallel to the FSS’ coupled parallel strips, it shows two rejecting bands. Moreover, another rejecting band can be obtained if the source plane wave is perpendicularly polarized with respect to the FSS’ coupled parallel strips. The three resonant frequencies are inversely proportional to the length of the FSS’ coupled strips to provide an easy fine tuning of the FSS structure. The simulated results obtained using WCIP are compared to the measured results, and a good agreement is reported.

Wave concept iterative procedure (WCIP) is used to analyze dual‐band and enhanced band frequency selective surfaces (FSS). In the metallic U‐shaped simple FSS, a fine‐tune of the two rejected bands is insured by varying independently the length of the two parallel U‐shaped FSS strips. The dual band response can also be obtained from the two‐level rectangular conducting patches FSS. An enhanced rejecting bandwidth is observed for FSS with two square ring printed on each substrate side. The WCIP results are successfully compared with measurements and HFSS results. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:836–839, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25073

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A novel notched quasi‐square open metallic ring frequency selective surfaces (FSS) with single layer for triband applications is proposed. By the use of the wave concept iterative process (WCIP), the resonant characteristics of the proposed FSS are determined. The presented FSS shows three resonant frequencies when the incident wave is x‐polarized and one resonant frequency when the source is polarized in the orthogonal direction. A variation in the notched quasi‐square metallic ring dimensions allows a fine tuning in the FSS resonant frequencies to give raise to a tuned and enhanced bandwidth. Four FSS structures are manufactured and characterized. A good agreement is obtained when the WCIP results are compared with the simulations of COMSOL Multiphysics software and experiment. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2071–2075, 2016