The Optimum Directivity of Array Antennas with a Specified Sidelobe Level

Naohisa GOTO  Fumio WATANABE  Toshio SEKIGUCHI  

IEICE TRANSACTIONS (1976-1990)   Vol.E60   No.8   pp.399-402
Publication Date: 1977/08/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Antennas and Propagation

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This paper deals with a problem of maximizing directivity of a uniformly spaced broadside array under constraints on the specified sidelobe level. For this purpose, we use a quadratic programming in order to clarify the properties of the radiation pattern with high directivity and low sidelobe level. In resulting radiation patterns, the first sidelobes are suppressed to the specified level and other sidelobes decrease gradually in magnitude similarly to a Taylor pattern. The number of sidelobes in equal magnitude is determined by the specified sidelobe level. These properties are still held for both isotropic and parallel dipole elements.