Abstract
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Traditional near-field to far-field transformation algorithms based on modal expansion are unable to deal with arbitrary measurement surfaces. To approach these problems, a matrix inversion method can be used to retrieve the spherical wave expansion (SWE) of the antenna under test (AUT) fields. Modeling the antenna with a set of multiple SWEs centered at arbitrary points over its surface offers a flexible approach for the solution of field transformation problems over arbitrary surfaces. The coefficients of each SWE are obtained using an iterative inversion approach where the matrix-vector products can be replaced by multilevel operators based on recursive aggregations and interpolations of the partial SWE fields, reducing the computational complexity from ?(?) to ? ? ? . The proposed algorithm is tested using synthetic data and measurements showing good scalability and reduced transformation error. | |
International
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Si |
Congress
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AMTA 2018 |
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960 |
Place
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WILLIAMSBURG, VIRGINIA |
Reviewers
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Si |
ISBN/ISSN
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2380-1840 |
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Start Date
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04/11/2018 |
End Date
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09/11/2018 |
From page
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1 |
To page
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6 |
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2018 AMTA PROCEEDINGS |