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18 October 2013 A W-band passive imaging system implemented with rotating diffraction antenna technology
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Abstract
The operational concept and results of tests are presented for a prototype W-band passive imaging system based on a planar diffraction antenna. A multi-beam (64 beams) rotating antenna pattern is formed due to the dispersive properties of the antenna and by rotating the antenna around the viewing axis by means of a low power electromechanical drive. The operational frequency bandwidth of 16 GHz is split into 64 sub-bands, one for each ‘beam’. Image formation at short distances, ~ several meters, is possible with the addition of a static lens in front of the rotating antenna unit; far field imaging is also possible without an additional lens. Technical parameters and imaging results from the prototype unit are discussed.
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Sergiy Shylo, Yuriy Sydorenko, Dana Wheeler, and Douglas Dundonald "A W-band passive imaging system implemented with rotating diffraction antenna technology", Proc. SPIE 8900, Millimetre Wave and Terahertz Sensors and Technology VI, 890008 (18 October 2013); https://doi.org/10.1117/12.2028838
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