NDLI: Design of Planar Arrays With Reduced Nonuniform Excitation Subject to Constraints on the Resulting Pattern and the Directivity

Content Provider	IEEE Xplore Digital Library
Author	Kaifas, T.N. Babas, D.G. Sahalos, J.N.
Copyright Year	1963
Abstract	A design procedure for the synthesis of planar arrays is presented. Synthesis takes into account the desired pattern and the constraint on the directivity index. It makes use of the perturbation method in conjunction with the Lagrange multiplier theory. Starting from an initial array we perturb the element positions by employing an iterative technique. In the iteration, by setting the first variation of the Lagrangian (Cost function) equal to zero we derive the perturbed positions. Perturbation is applied simultaneously along two independent variables, (element coordinates x and y). The final position of the elements results from the last iteration where the stopping criteria are met. The choice of the initial array takes into account the number of elements and the reduction need of nonuniformity in the excitation. Our study is used for various initial geometries and the resulting arrays are shown to comply with the desired pattern and the directivity index.
Sponsorship	IEEE Antennas and Propagation Society
Starting Page	2270
Ending Page	2278
Page Count	9
File Size	1528290
File Format	PDF
ISSN	0018926X
Volume Number	57
Issue Number	8
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-08-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Planar arrays Lagrangian functions Perturbation methods Geometry Transmission line matrix methods Cost function Laboratories Stochastic processes Constraint theory Physics directivity constraint Aperiodic arrays array synthesis
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering

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