Print Email Facebook Twitter Efficient semi-analytical method for the analysis of large finite connected slot arrays Title Efficient semi-analytical method for the analysis of large finite connected slot arrays Author Van Katwijk, Alexander J. (TU Delft Tera-Hertz Sensing) Neto, A. (TU Delft Tera-Hertz Sensing) Toso, Giovanni (European Space Agency (ESA)) Cavallo, D. (TU Delft Tera-Hertz Sensing) Date 2022 Abstract We present an efficient method for the analysis of finite connected slot arrays in the presence of stratified media. The formulation is based on a spectral method of moments, where only one basis function is considered for each array element and one for each slot edge. An expression for the mutual impedance is derived in terms of a double spectral integral. Asymptotic extraction techniques are employed to largely reduce the computation time of one of the spectral integrals. For the other integral, when a guided wave contribution dominates the mutual coupling between two array elements, the result can be approximated as the residue of the spectral polar singularity, providing a closed-form solution of the coupling for elements at electrically large distances. The complete method enables simulations of entire finite arrays with hundreds or even thousands of elements in minutes. The same structure would require impractical computation time when analyzed with general-purpose commercial software. The method allows estimating the performance of finite connected arrays. This is particularly relevant because wideband connected arrays are known to exhibit higher edge effects compared to narrowband arrays, due to the high interelement mutual coupling. Subject Antenna arraysfinite array simulationsfinite edge effectswideband arrays To reference this document use: http://resolver.tudelft.nl/uuid:fb6da46b-12a5-44ca-a8d5-20d03b25232b DOI https://doi.org/10.1109/TAP.2022.3209272 Embargo date 2023-07-01 ISSN 0018-926X Source IEEE Transactions on Antennas and Propagation, 71(2023) (1), 402-410 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2022 Alexander J. Van Katwijk, A. Neto, Giovanni Toso, D. Cavallo Files PDF Efficient_Semi_Analytical ... Arrays.pdf 3.58 MB Close viewer /islandora/object/uuid:fb6da46b-12a5-44ca-a8d5-20d03b25232b/datastream/OBJ/view