Modeling the RF Performance of a Small Array

Large phased arrays can be reasonably accurately modelled in finite element programs, such as HFSS using an infinite array model of the embedded element. This approximation is not applicable to small arrays, where each element is in a different electromagnetic environment. Very small arrays of simpl...

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Bibliographic Details
Published in:Applied Computational Electromagnetics Society journal 2006-11, Vol.21 (3), p.291
Main Authors: Foster, P R, Wicks, A E
Format: Article
Language:English
Subjects:
Dipoles
Finite element method
Phased arrays
Waveguides
Online Access:Get full text
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Summary:Large phased arrays can be reasonably accurately modelled in finite element programs, such as HFSS using an infinite array model of the embedded element. This approximation is not applicable to small arrays, where each element is in a different electromagnetic environment. Very small arrays of simple elements (of about 10 elements or less) can be modelled as a complete unit, but slightly larger or more complex arrays require additional techniques to be modelled accurately. The predicted performance of several versions of a small array has been compared using HFSS V9.5. The arrays contained either waveguide or printed dipole elements and, within the limits of available computing resources, solutions were generated for (1) complete array models, (2) half and quarter array models with symmetry planes, and (3) infinite array models.
ISSN:1054-4887
1943-5711