NDLI: A spacing weighted antenna array

Content Provider	IEEE Xplore Digital Library
Author	Lo, Y.
Copyright Year	1966
Description	Author affiliation: University of Illinois, Urbana, IL, USA (Lo, Y.)
Abstract	This paper considers a non-uniformaly spaced array. By starting with a continuous aperture distribution, the pattern function is formulated from a Lesbegue-Stieltjes integral point of view. A spacing weighting function can thus be generated. Based upon the methods of mechanical quadrature, the integral is reduced to a summation which represents the pattern function of a corresponding array. As an examples a symmetric linear array of 74 isotropic sources at an average spacing of 1.82 wavelengths is considered. The side lobe level is found to be less than -14 db for\|u\| < 0.98and below -10 db for\|u\| \leq 2. If these elements were uniformly spaced, secondary beams of 0-db level would occur atu = \pm 0.552, \pm 1.10, and\pm 1.66. A systematic optimization in a certain sense by a high speed computer has also been carried out. It indicates that a slight improvement in performance is possible. Based upon Legendre-Gaussian quadrature, two other linear arrays, both spacing and amplitude weighted: are studied. For relatively small u, their patterns are practically identical to that due to the corresponding continuous distribution.
Starting Page	191
Ending Page	195
File Size	350718
Page Count	5
File Format	PDF
DOI	10.1109/IRECON.1962.1147026
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1966-03-21
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Costs Radio astronomy Convolution Design methodology Optimization methods Radar Apertures Linear antenna arrays Feeds Antenna arrays
Content Type	Text
Resource Type	Article

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