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Hybrid sparse array design using Delaunay Triangulation and Convex optimization for wide beam steering

Published online by Cambridge University Press:  28 March 2025

Pan Gao Open the ORCID record for Pan Gao [Opens in a new window]  and
Zhongquan Chen
Pan Gao*
Affiliation:
Electrical Engineering Department, Eindhoven University of Technology, Eindhoven, The Netherlands
Zhongquan Chen
Affiliation:
Mathematics and Computer Science Department, Eindhoven University of Technology, Eindhoven, The Netherlands
*
Corresponding author: Pan Gao; Email: [email protected]
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Abstract

In this paper, we propose a hybrid sparse array design utilizing Delaunay Triangulation algorithm for element positioning and Convex algorithm for element excitation optimization. This Delaunay Triangulation algorithm yields a radiation pattern devoid of grating lobes. Then Convex algorithm is used to optimize the element excitations to further decrease side-lobe-level. The minimum inter-element distance is as large as 8 times of wavelength. The peak-side-lobe-level can be −17.3 dB. Furthermore, beam steering can be achieved with good performance within 80° field-of-view range.

Keywords

beam steeringConvexDelaunay Triangulationgrating lobeshybridsparse arrayside-lobe-level
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , First View , pp. 1 - 9
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Copyright
© The Author(s), 2025. Published by Cambridge University Press in association with The European Microwave Association.

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