Study on Two-Dimensional Sparse MIMO UWB Arrays for High Resolution Near-Field Imaging
A novel generic topology for two-dimensional (2-D) sparse multiple-input-multiple-output (MIMO) ultrawideband (UWB) arrays is suggested. Based on the proposed topology, a 2-D MIMO UWB array for high-resolution short-range imaging is developed. The focusing properties of this array are studied both t...
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Veröffentlicht in: | IEEE transactions on antennas and propagation 2012-09, Vol.60 (9), p.4173-4182 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A novel generic topology for two-dimensional (2-D) sparse multiple-input-multiple-output (MIMO) ultrawideband (UWB) arrays is suggested. Based on the proposed topology, a 2-D MIMO UWB array for high-resolution short-range imaging is developed. The focusing properties of this array are studied both theoretically and experimentally and are shown to be superior to those of arrays with a similar number of antennas and based on known topologies such as Mills Cross, rectangular, and spiral configurations. Decisive impact of a large operational bandwidth and short focusing distance on MIMO array performance is shown. Imaging capabilities of the proposed array are experimentally demonstrated for distributed targets. |
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ISSN: | 0018-926X 1558-2221 |
DOI: | 10.1109/TAP.2012.2207031 |