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Superdirective Linear Dipole Array Optimization
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DOI：10.1109/LAWP.2020.2981533.png)
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Abstract
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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.
Keywords:
Eigenvalues and eigenfunctions
Dipole antennas
Geometry
Antenna radiation patterns
Current density
Linear antenna arrays
Linear dipole array
optimization
superdirectivity
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