Squint-less arc array for near-field focusing in wideband systems

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In this paper, the arc array for squint-less near-field focusing is used, theoretically analyzed, and verified. The arc array is designed to overcome the squint phenomenon in the near-field and transfers the maximum power at a focused distance. The implemented transmitter is composed of vivaldi antennas with a spacing and operates at a frequency of 5.8 GHz. In addition, the design method of the arc array is proposed, considering the focused distances. In the experiments, the bending degree of the arc array is when the focused distance is 0.5 m. At a fractional bandwidth of 27.5%, the focus position is shifted 32%. On the other hand, in the arc array, the focus position is not shifted. Experimental results from the implemented arc array show good agreement with the proposed theory.
Publisher
TAYLOR & FRANCIS LTD
Issue Date
2021-07
Language
English
Article Type
Article
Citation

JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, v.35, no.10, pp.1378 - 1387

ISSN
0920-5071
DOI
10.1080/09205071.2021.1890642
URI
http://hdl.handle.net/10203/285503
Appears in Collection
EE-Journal Papers(저널논문)
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