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An eigencurrent description of finite arrays of electromagnetically characterized elements
Author(s) -
Bekers D. J.,
van Eijndhoven S. J. L.,
Tijhuis A. G.
Publication year - 2009
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1029/2007rs003797
Subject(s) - eigenvalues and eigenvectors , focus (optics) , finite element method , physics , dipole , field (mathematics) , finite field , interpretation (philosophy) , mathematical analysis , mathematics , optics , quantum mechanics , pure mathematics , computer science , combinatorics , thermodynamics , programming language
To describe the behavior of a finite array, the current distribution on each of its elements is represented by a finite number of eigencurrents or modes. Subsequently, the eigencurrents of the array are expanded in terms of these element eigencurrents. For uniform linear arrays of loops and dipoles, the array‐eigencurrent expansions and their associated eigenvalues are investigated. We focus on their parameter independent and diagonalizing features, and on their interpretation in terms of far‐field characteristics and (standing) wave behavior.