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Equivalent Dielectric Description of Transmit-arrays as an efficient and accurate method of analysis

Matos, S.A. ; Costa, J.R. ; Naseri, P. ; Lima, E.B. ; Fernandes, C. A. ; Fonseca, N.

Equivalent Dielectric Description of Transmit-arrays as an efficient and accurate method of analysis , Proc The European Conference on Antennas and Propagation - EuCAP, Online, Denmark, Vol. , pp. - , March, 2020.

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Abstract
Transmit-arrays (TAs) provide cost-effective
solutions for various antenna applications, including satellite
and terrestrial communications. Usually, these antennas have
electrically large apertures, comprising thousands of fine-tuned
subwavelength unit-cells. This makes full-wave simulations
demanding in terms of computational resources, constraining
the antenna design and optimization. Herein, we present an
efficient method for the reduction of the TA’s computational
complexity that still provides accurate results for the main
figures of merit of the antenna. For the chosen example, the
simulation was 3 times faster and required 50% less memory.
Yet, as the complexity of the problem is further scaled, this
method is expected to become even more effective.