On the Use of Contour-FFT for the MBF-based Analysis of Arrays of Antennas Placed Vertically Above a Multi-layered Substrate

Al Khalifeh, Khaldoun;Jha, Shambhu Nath;Karki, Sumit;Craeye, Christophe
(2015) 9th European Conference on Antennas and Propagation (EUCAP) — Location: Lisbon, Portugal. (12.April.2015)

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Abstract
A method is proposed for the fast Macro Basis Functions (MBFs) characterization of arrays of antennas placed vertically above a multi-layered substrate by using the Contour-Fast Fourier Transform (Contour-FFT) method. The presented work aims at accelerating the evaluation of interactions between the MBFs defined on the elements corresponding to antennas extending vertically above the ground. We first write a complex plane extension of the interaction between antennas via reflection by the ground. The calculation is then accelerated using the Contour-FFT. We exploit the Contour-FFT available for planar arrays to efficiently obtain the solution of the currents on the vertical antennas with the consideration of reflections from the semi-infinite ground. Results are presented and future perspectives are highlighted.
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Al Khalifeh, K. (2015). On the Use of Contour-FFT for the MBF-based Analysis of Arrays of Antennas Placed Vertically Above a Multi-layered Substrate. 9th European Conference on Antennas and Propagation (EUCAP), Lisbon, Portugal. https://hdl.handle.net/2078.5/231535