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    CST offers a wide range of EM simulation software to address design challenges across the electromagnetic spectrum, from static and low frequency to microwave and RF, for a range of applications, including EDA & electronics, EMC & EMI and charged particle dynamics.

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  • Student Edition

    Student Edition The CST STUDIO SUITE® Student Edition has been developed with the aim of introducing you to the world of electromagnetic simulation, making Maxwell’s equations easier to understand than ever. With this edition you have, bar some restrictions, access to our powerful visualization engine and some of the most advanced solvers of CST STUDIO SUITE.

    Student Edition

CST – Computer Simulation Technology

Title:
Effective-surface modeling of infinite periodic metascreens exhibiting the extraordinary transmission phenomenon
Author(s):
ALEXANDROS I. DIMITRIADIS, THEODOSIOS D. KARAMANOS, NIKOLAOS V. KANTARTZIS, AND THEODOROS D. TSIBOUKIS
Source:
Journal of the Optical Society of America B
Vol./Issue/Date:
Vol 33 No. 3
Year:
2016
Page(s):
pp 434 - 444
Abstract:
The consistent analysis of metallic screens perforated with subwavelength apertures of diverse geometrical patterns (metascreens) by means of a systematic methodology is presented in this paper. The principal concept of the new technique stems from the efficient characterization—via the use of effective surface parameters—of the metascreen’s complementary array of scatterers (i.e., a metafilm) and the proper utilization of the Babinet duality principle. To this end, a previously developed model for metafilms is carefully extended (for normal plane wave incidence) in order to apply to frequencies where the extraordinary transmission phenomenon typically occurs. General-purpose analytical formulas for the reflection and transmission coefficients of an arbitrary metascreen are also derived as part of this generalized framework. Finally, the predictions for the extraordinary transmission spectra through various metascreens operating in the microwave regime, as obtained via two distinct realizations of the proposed formulation, are compared with the results of a commercial computational package in order to verify the precision of the developed technique and provide instructive physical insights.
Document:

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