“…Continuing the same analysis it can be seen that selectors T and B along with middle layer M cause multiple reflections of y-polarization in the MT region and that of x-polarization in MB region. These multiple reflections resemble a Fabry-Perot cavity 46 that, in turn, results in enhanced peaks of transmission. Figure 9 Multiple reflections occurring in multi-layered structure, resembling a Fabry-Perot Cavity.…”
A multi-layered chiral device manifesting asymmetric transmission (AT) facilitating one-way channeling of electromagnetic (EM) waves, based on the inherent polarization is presented. The designed metasurface depicts a high transmission contrast with an efficiency above 80% for an ultra-wide operational range of 6.3–12.3 GHz, constituting a fractional bandwidth of 64%. As an additional feature, the reported metasurface yields robustness against oblique incidences up to 45$$^\circ $$
∘
while maintaining high transmission efficiency. This report also introduces a unique analogy of the AT based communication system with logic-gates by formulating its truth-table and logic circuit. Furthermore, new insights of AT magnitude’s dependence to oblique incidences are presented on the account of surface impedance mismatch due to TE and TM polarization with varying incidence angle. Moreover, avoidance of grating lobes and the associated transmission deterioration through utilization of electrically small periodic metasurface is presented. The results have been numerically and practically validated yielding state-of-the-art features. Operating within C and X band, the reported work is an ideal candidate for practical AT applications.
“…Continuing the same analysis it can be seen that selectors T and B along with middle layer M cause multiple reflections of y-polarization in the MT region and that of x-polarization in MB region. These multiple reflections resemble a Fabry-Perot cavity 46 that, in turn, results in enhanced peaks of transmission. Figure 9 Multiple reflections occurring in multi-layered structure, resembling a Fabry-Perot Cavity.…”
A multi-layered chiral device manifesting asymmetric transmission (AT) facilitating one-way channeling of electromagnetic (EM) waves, based on the inherent polarization is presented. The designed metasurface depicts a high transmission contrast with an efficiency above 80% for an ultra-wide operational range of 6.3–12.3 GHz, constituting a fractional bandwidth of 64%. As an additional feature, the reported metasurface yields robustness against oblique incidences up to 45$$^\circ $$
∘
while maintaining high transmission efficiency. This report also introduces a unique analogy of the AT based communication system with logic-gates by formulating its truth-table and logic circuit. Furthermore, new insights of AT magnitude’s dependence to oblique incidences are presented on the account of surface impedance mismatch due to TE and TM polarization with varying incidence angle. Moreover, avoidance of grating lobes and the associated transmission deterioration through utilization of electrically small periodic metasurface is presented. The results have been numerically and practically validated yielding state-of-the-art features. Operating within C and X band, the reported work is an ideal candidate for practical AT applications.
“…Continuing the same analysis it can be seen that selectors T and B along with middle layer M cause multiple reflections of y-polarization in the MT region and that of x-polarization in MB region. These multiple reflections resemble a Fabry-Perot cavity 45 that, in turn, results in enhanced peaks of transmission.…”
Section: Fabry-perot Like Resonance In the Tri-layered Structurementioning
A multi-layered chiral device manifesting asymmetric transmission (AT) facilitating one-way channeling of electromagnetic (EM) waves, based on the inherent polarization is presented. The designed metasurface depicts a high transmission contrast with an efficiency above 80% for an ultra-wide operational range of 6.3-12.3 GHz, constituting a fractional bandwidth of 64%. As an additional feature, the reported metasurface yields robustness against oblique incidences up to 45◦ while maintaining high transmission efficiency. This report also introduces a unique analogy of the AT based communication system with logic-gates by formulating its truth-table and logic circuit. Furthermore, new insights of AT magnitude’s dependence to oblique incidences are presented on the account of surface impedance mismatch due to TE and TM polarization with varying incidence angle. Moreover, avoidance of grating lobes and the associated transmission deterioration through utilization of electrically small periodic metasurface is presented. The results have been numerically and practically validated yielding state-of-the-art features. Operating within C and X band, the reported work is an ideal candidate for practical AT applications.
“…A real part of the Pasteur parameter κ involves, then, a phase difference between both waves. Since a linearly polarized wave may be decomposed in two right-and left-handed polarized waves, it will suffer a rotation of its polarization angle ("electromagnetic activity") [29][30][31]:…”
Section: Chiral Bi-isotropic Mediamentioning
confidence: 99%
“…The numerical analysis has been performed, as mentioned, by using CST Studio Suite®. The extracted S-parameters have been processed in order to retrieve the polarization angle and ellipticity of the transmitted wave [29][30][31]. Then, the effective parameters of the equivalent medium have been obtained using (3) and (4).…”
Section: Structure Under Studymentioning
confidence: 99%
“…International Journal of Antennas and Propagation polarized in origin, will present after propagating a distance z an ellipticity given by [29][30][31] tan 2η = tanh 2k 0 zκ ″ 4…”
A uniaxial bianisotropic, full-dielectric structure has been designed and numerically studied. The material is based on a previously published 2D-honeycomb structure. A 3D expansion leads to an effective metamaterial showing a typical chiral electromagnetic behavior, i.e., a resonant electromagnetic activity with a small circular dichroism.
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