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In the summary the results of experimental research of electromagnetic wave reflection of microwave-band (7.8–12.3 GHz) by samples of foam and layered structures, located in free space on a metal substrate are presented. The characteristics of reflection by foam structures in a range of sample thickness 10–84 mm with foaming ratio 30–170 as well as by layered structure with foam layer are investigated. The opportunity of the wave matching improvement of quasihomogeneous layered structures by means of foamеd layer is shown.