Synthesis of Reactively Loaded Sparse Antenna Arrays Using Optimization on Riemannian Manifold
Loading...
Access rights
openAccess
publishedVersion
URL
Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Date
Major/Subject
Mcode
Degree programme
Language
en
Pages
11
Series
IEEE Open Journal of Antennas and Propagation, Volume 5, issue 3, pp. 653-663
Abstract
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.Description
Publisher Copyright: Authors
Other note
Citation
Salmi, A, Lehtovuori, A & Viikari, V 2024, 'Synthesis of Reactively Loaded Sparse Antenna Arrays Using Optimization on Riemannian Manifold', IEEE Open Journal of Antennas and Propagation, vol. 5, no. 3, pp. 653-663. https://doi.org/10.1109/OJAP.2024.3382833