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Study on Two-Dimensional Sparse MIMO UWB Arrays for High Resolution Near-Field Imaging

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2 Author(s)
Xiaodong Zhuge ; Int. Res. Centre for Telecommun. & Radar, Delft Univ. of Technol., Delft, Netherlands ; Yarovoy, A.G.

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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Antennas and Propagation, IEEE Transactions on  (Volume:60 ,  Issue: 9 )