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Resonance properties of cascaded frequency-selective surfaces


S.A. Alaverdyan – Ph. D. (Eng.), Head of Department, Central Institute of Measuring Equipment (Saratov). E-mail: I.N. Kabanov – Ph. D. (Eng.), Head of Department, Mytishchinsky SRI of Radio-Measuring Instruments. E-mail: V.V. Komarov – Dr. Sc. (Eng.), Professor, Department «Radioengineering and telecommunications», Yuri Gagarin State Technical University (Saratov). E-mail: V.P. Meschanov – Dr. Sc. (Eng.), Professor, Director of NIKA-Microwave, Ltd (Saratov). E-mail:

As it has been shown by many authors, functional possibilities of various passive devices of microwave and terahertz range can be essentially extended by using so-called frequency-selective surfaces (FSS). They find application in modern radio electronic systems as basic units of band-pass filters, absorbers, polarizers, modulators, power dividers and so on. One of such metasurfaces with cross shaped aperture elements (CAE) was considered in several publications for potential application as narrow-band filters. Electrodynamic characteristics of these FSS are determined by four main dimensions: cross length a, cross width b, grid period w and the metal basis thickness d. Compact and low-weight FSS-based filters demonstrate stable resonance properties in different frequency ranges and the pass band around 10%. As it has been proved in present study, this parameter can be improved by employing cascaded principle of such device design. Band-pass filter on double-layer metasurface with CAE has been modeled numerically with the help of the finite-difference time-domain technique implemented in commercial software QuickWave 3D. Simulation results have shown that the transmittance of cascaded filters essentially depends on the distance between FSS: pass band is decreased while EM waves attenuation is increased. The last drawback of such devices can be partially compensated by using metals with high electrical conduc-tivity in filters design and by increasing parameter b of CAE.


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