Kota, JohnMadanayake, ArjunaBelostotski, LeonidWijenayake, ChamithBruton, Len T.2025-01-312025-01-312013-09Kota, J., Madanayake, A., Belostotski, L., Wijenayake, C., & Bruton, L. T. (2013). A 2-D Signal Processing Model to Predict the Effect of Mutual Coupling on Array Factor. IEEE Antennas and Wireless Propagation Letters, 12, 1264–1267. https://doi.org/10.1109/LAWP.2013.2282272https://doi.org/10.1109/LAWP.2013.2282272https://hdl.handle.net/1880/120604A semi-analytical method for modeling the effects of electromagnetic mutual coupling in uniform linear array (ULA) of N antennas is proposed. The coupling is described as a two-dimensional (2-D) spatiotemporal transfer function derived from S-parameter measurements. The proposed 2-D transfer function enables prediction of the distortions in array factor due to coupling, and thereby enables the potential design of coupling-compensation algorithms. The method is verified with simulations in the 1.5-2.0-GHz range on both an N=7-element ULA using CST Microwave Studio using 50- Ω terminations and a N=3-element ULA in FEKO but with non-50 Ω impedance obtained from measurements of a CMOS low noise amplifier (LNA). Coupling effect on array factor of delay-sum-type beamformer was examined. The proposed model matches within an error of 4%-12% and 4%-10% with respect to the results from two full-wave electromagnetic simulators CST Microwave Studio and FEKO, respectively, in the frequency range 1.75-2 GHz.enUnless otherwise indicated, this material is protected by copyright and has been made available with authorization from the copyright owner. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/Antenna arraysbeamformingmutual couplingArticle10.1109/LAWP.2013.2282272