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Applying Massively Parallel Computing to Multi-Scale Ka Dual-Band Transmit-Array Analysis using FETI-2LM

Barka, A. ; Matos, S.A. ; Costa, J.R. ; Fernandes, C. A. ; CHREIM, H.

IEEE Journal on Multiscale and Multiphysics Computational Techniques Vol. 5, Nº -, pp. 235 - 244, November, 2020.

ISSN (print): 2379-8793
ISSN (online): 2379-8793

Journal Impact Factor: (in )

Digital Object Identifier: 10.1109/JMMCT.2020.3033846

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Transmit-arrays (TAs) are a popular cost-effective solution for high-gain antennas at millimeter waves (mmW). The design of these antennas relies on the fine tuning of the sub-wavelength unit-cells that compose the aperture. The TA is illuminated by a source placed at its focal point, forming a very large computational volume in terms of wavelength. The intricacy of the unit-cells increases as new features are implemented, such as dual-band operation and wide angle beam steering, making this antenna even more computationally challenging. Fast and accurate evaluations are required to perform several optimization cycles. In this work, a 25 dBi gain multi-scale Ka dual-band TA for beam-steering applications is analyzed using a massively parallel implementation of the Finite Element Tearing and Interconnecting method, with a two Lagrange Multiplier (FETI-2LM) technique, in the FACTOPO code.