DESIGN OF MULTIBAND FRACTAL ARRAY FACTORS WITH REDUCED ARRAY SIZE

El-Khamy, S. E.; Aboul-Dahab, M. A.; Elkashlan, M. I.

doi:10.21608/iceeng.1999.62300

DESIGN OF MULTIBAND FRACTAL ARRAY FACTORS WITH REDUCED ARRAY SIZE

Document Type : Original Article

Authors

¹ Fellow IEEE, Department of Electrical Engineering, Faculty of Engineering, Alexandria University.

² Senior IEEE, Department of Electronics and Communications Engineering, Faculty of Engineering, Arab Academy for Science and Technology and Maritime Transport.

³ Student member IEEE, Department of Electronics and Communications Engineering, Faculty of Engineering, Arab Academy for Science and Technology and Maritime Transport.

10.21608/iceeng.1999.62300

Abstract

The multiband behavior of the fractal Kaiser-Koch array factor is described in this paper. The fractal arrayfactors presented keep the same shape at several bands because they are constructed from self-similar curves. A Kaiser window as a generating pulse function is proposed for the design of Koch-array factors. Kaiser windows are characterized by having the lowest side lobes of all windows in the transformed domain. The result of applying such a technique mould result in an array current distribution having lower side lobes, with a reduced auto size after setting a threshold beyond which the elements are eliminated.

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