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Sunflower Array Antenna with Adjustable Density Taper
Author(s) -
Maria Carolina Viganó,
Giovanni Toso,
G. Caille,
C. Mangenot,
Ioan E. Lager
Publication year - 2009
Publication title -
international journal of antennas and propagation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.282
H-Index - 37
eISSN - 1687-5877
pISSN - 1687-5869
DOI - 10.1155/2009/624035
Subject(s) - tapering , beamwidth , aperture (computer memory) , antenna (radio) , planar , planar array , amplitude , voronoi diagram , optics , radiation pattern , physics , mathematics , computer science , acoustics , telecommunications , geometry , computer graphics (images)
A deterministic procedure to design a nonperiodic planar array radiating a rotationally symmetric pencil beam pattern with an adjustable sidelobe level is proposed. The elements positions are derived by modifying the peculiar locations of the sunflower seeds in such a way that the corresponding spatial density fits a Taylor amplitude tapering law which guarantees the pattern requirements in terms of beamwidth and sidelobe level. Different configurations, based on a Voronoi cell spatial tessellation of the radiative aperture, are presented, having as a benchmark the requirements for a typical multibeam satellite antenna

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