Selective EHF absorber based on BaFe12O19 hexaferrite Kirill V. Dorozhkin, Grigorii E. Kuleshov, Alexander V. Badin, Maxim O. Gering and Kseniya V. Simonova ITM Web Conf., 30 (2019) 07006 Published online: 27 November 2019 DOI: 10.1051/itmconf/20193007006