Superdirective Linear Dipole Array Optimization

The theory of superdirective antenna arrays was discussed. The procedure for finding the excitation currents of fixed-geometry arrays, which maximizes the directivity, termed as superdirectivity, for a given direction and polarization, was described. The procedure was based on the solution of an eig...

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Published in:IEEE antennas and wireless propagation letters 2020-06, Vol.19 (6), p.902-906
Main Authors: Lonsky, Tomas, Kracek, Jan, Hazdra, Pavel
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna radiation patterns
Conductors
Current density
Dipole antennas
Dipoles
Directivity
Eigenvalues
Eigenvalues and eigenfunctions
Electric conductors
Geometry
Ground plane
Linear antenna arrays
Linear dipole array
Optimization
superdirectivity
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description The theory of superdirective antenna arrays was discussed. The procedure for finding the excitation currents of fixed-geometry arrays, which maximizes the directivity, termed as superdirectivity, for a given direction and polarization, was described. The procedure was based on the solution of an eigenvalue problem including the directivity and matrices of normalized self- and mutual radiation intensities and normalized self- and mutual radiated powers of array elements. For examples of a linear dipole array located above a perfect electric conductor ground plane, this procedure was also combined with the optimization of the parameters of geometry of the array as a spacing of dipoles, or their height above the ground, for various number of dipoles in the array.
doi_str_mv 10.1109/LAWP.2020.2981533
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source IEEE Electronic Library (IEL) Journals
subjects Antenna arrays
Antenna radiation patterns
Conductors
Current density
Dipole antennas
Dipoles
Directivity
Eigenvalues
Eigenvalues and eigenfunctions
Electric conductors
Geometry
Ground plane
Linear antenna arrays
Linear dipole array
Optimization
superdirectivity
title Superdirective Linear Dipole Array Optimization
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