Extraordinary transmission and radiation from finite by infinite arrays of slots
Camacho Aguilar, M; Boix, RR; Medina, F; et al.Hibbins, A; Sambles, J
Date: 22 August 2019
Journal
IEEE Transactions on Antennas and Propagation
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Publisher DOI
Abstract
In this communication an efficient Method of Moments (MoM) code is used for the analysis of the extraordinary
transmission (EOT) through a periodic array of rectangular slots
in a conducting screen, in the case where the number of slots
is finite in one direction and infinite in the orthogonal direction.
The slots can be arbitrarily ...
In this communication an efficient Method of Moments (MoM) code is used for the analysis of the extraordinary
transmission (EOT) through a periodic array of rectangular slots
in a conducting screen, in the case where the number of slots
is finite in one direction and infinite in the orthogonal direction.
The slots can be arbitrarily rotated within the periodic unit cell.
Once the magnetic current density on the slots is obtained by
means of MoM, both the transmission coefficient and the far
field radiated by the array of slots are computed. The onset of
EOT turns out to be strongly dependent on the orientation of the
slots with respect to the direction in which the array is infinite.
If the slots are perpendicular to this direction, EOT appears for
a single infinite chain of slots. However, tens of parallel chains
of slots are required to reproduce the EOT response when the
slots are aligned along the parallel chains direction. The obtained
radiation patterns show the excitation of grating lobes as the
number of slots grows in the direction where the arrays are
finite.
Physics and Astronomy
Faculty of Environment, Science and Economy
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