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The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including those from the School of Psychological Sciences & Health - but also papers by researchers based within the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

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Frequency invariant beamforming for two-dimensional and three-dimensional arrays

Liu, W. and Weiss, S. and Mcwhirter, J. and Proudler, I. (2007) Frequency invariant beamforming for two-dimensional and three-dimensional arrays. Signal Processing, 87 (11). pp. 2535-2543. ISSN 0165-1684

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A novel method for the design of two-dimensional (2-D) and three-dimensional (3-D) arrays with frequency invariant beam patterns is proposed. By suitable substitutions, the beam pattern of a 2-D or 3-D arrays can be regarded as the 3-D or 4-D Fourier transform of its spatial and temporal parameters. Since frequency invariance can be easily imposed in the Fourier domain, a simple design method is derived. Design examples for the 2-D case are provided.