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LINEAR ARRAY PATTERN SYNTHESIS FOR WIDE BAND SECTOR NULLING

Ismail, T.H. and Mismar, M.J. and Dawoud, M.M. (1999) LINEAR ARRAY PATTERN SYNTHESIS FOR WIDE BAND SECTOR NULLING. Journal of Electromagnetic Waves and Applications, 13 (1). pp. 93-94.

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Abstract

This paper presents a new technique for the synthesis of multiple wide band nulls by controlling the complex current excitations in linear arrays. The complex current excitations are determined using the minimax approximation approach to suppress multiple wide band sectors while maintaining the sidelobe level and the main beam width almost unchanged. This method estimates the required number of pattern nulls to realize the prescribed suppressed sectors and locates the positions of the remaining nulls to control the optimum sidelobe level for the perturbed pattern in the minimax sense. The results show the formation of single and multiple wide band nulls at arbitrary prescribed directions. Also, this method can impose arbitrary symmetric and asymmetric nulls in the sidelobe region and hence, overcome the limitations of the linearized amplitude-only or phase-only solutions.



Item Type:Article
Date:1999
Subjects:Electrical
Divisions:College Of Engineering Sciences > Electrical Engineering Dept
Creators:Ismail, T.H. and Mismar, M.J. and Dawoud, M.M.
Email:UNSPECIFIED, UNSPECIFIED, mmdawoud@kfupm.edu.sa
ID Code:576
Deposited By:Obaid-Ur-Rehman Khattak
Deposited On:22 Mar 2008 09:08
Last Modified:12 Apr 2011 13:06

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