Synthesis of Reactively Loaded Sparse Antenna Arrays Using Optimization on Riemannian Manifold

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

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Abstrakti

This paper introduces a method for computing reactive terminations for scatterer elements in antenna arrays. With the fixed scatterer elements, we shape embedded element patterns of sparse arrays to focus the radiation into a grating-lobe-free limited field of view. The reactive terminations of the scatterer elements are determined by optimizing reflection coefficients on a Riemannian manifold. In addition, we show that widening the grating-lobe-free field of view is possible by tilting the field of view. We design both 5-element linear and 4-by-4-element planar reactively loaded antenna arrays with 1.4-wavelength inter-element distances. The terminations of the scatterer elements are optimized so that the arrays cover either the broadside-located or the tilted grating-lobe-free field of view. The results obtained from the linear array are validated through measurements of manufactured prototypes.

AlkuperäiskieliEnglanti
Sivut653-663
Sivumäärä11
JulkaisuIEEE Open Journal of Antennas and Propagation
Vuosikerta5
Numero3
Varhainen verkossa julkaisun päivämäärä2024
DOI - pysyväislinkit
TilaJulkaistu - 1 kesäk. 2024
OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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