Null steering of Dolph-Chebychev arrays using Taguchi method

Authors:
Abelmadjid Recioui;Hamid Bentarzi
Affiliations:
Laboratory Signals & Systems, Department of Electrical Engineering and Electronics, Faculty of Engineering, University of Boumerdes, Algeria;Laboratory Signals & Systems, Department of Electrical Engineering and Electronics, Faculty of Engineering, University of Boumerdes, Algeria
Venue:
WSEAS TRANSACTIONS on COMMUNICATIONS
Year:
2010

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Abstract

Dolph-Chebychev arrays are known to exhibit the best compromise between sidelobe level and directivity. However, they place a constraint on the null locations. Any attempt to impose nulls or get them deeper will impact the directivity/sidelobe level trade-off. In this work, null placement in Dolph-Chebychev arrays through element position perturbation is carried out based on Taguchi method all while preserving the array aperture. Several examples are considered for single, double, multiple and broad null placement to demonstrate the ability of the Taguchi method to explore the search space and reach the global optimum.