This paper presents a recent progress in a millimeter-wave imaging done with a potential 5G base-station phased-array antenna exhibiting frequency-diverse, non-focused beams. The presented imaging system operates in 24-32 GHz band and is the first realization where phased arrays primarily developed for 5G communications are utilized in a frequency-diverse imaging application. The image reconstruction method solves the linear inverse problem with an iterative algorithm, and several images have been reconstructed based on the measurement data. Currently, a metallic sphere can be successfully located in the target space. However, future work is still required, and the paper further discusses the possibilities and restrictions of the current imaging setup.
Mikko K. Leino,
"Millimeter-Wave Frequency-Diverse Imaging with Phased Array Intended for Communications," Progress In Electromagnetics Research M,
Vol. 101, 69-78, 2021. doi:10.2528/PIERM20120102
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