Uniform spherical distributions for adaptive array applications

This study investigates optimal three dimensional antennas for adaptive applications. The choice of the antenna element distribution on the spherical surface is governed by the desire to maintain a nearby constant pattern. Spherical arrays provide wide scan coverage with low grating lobe levels. We...

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Bibliographic Details
Main Authors: Verhaevert, J., Van Lil, E., Van de Capelle, A.
Format: Conference Proceeding
Language:English
Subjects:
Adaptive arrays
Antenna arrays
Antennas and propagation
Dipole antennas
Directive antennas
Gratings
Multiple signal classification
Signal resolution
Signal to noise ratio
Transmitting antennas
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Summary:This study investigates optimal three dimensional antennas for adaptive applications. The choice of the antenna element distribution on the spherical surface is governed by the desire to maintain a nearby constant pattern. Spherical arrays provide wide scan coverage with low grating lobe levels. We calculate the uniform distribution of a set of antennas on a sphere. Based on formulas of the spherical trigonometry, we show all the possible exact uniform distributions. It is astonishing, that only five possible solutions can be found. In this paper, the co-ordinates and the figures of these regular polyhedrons are shown. Because the number of possible uniform spherical distributions is limited, the number of elements that can be placed uniformly without approximation on a spherical surface is also limited to 20.
ISSN:1090-3038
2577-2465
DOI:10.1109/VETECS.2001.944811