Filters for diagnostic of Doppler reflectometry on the L-2M stellarator for operation under conditions of high ECR heating powerD.V. Malakhov, A.A. Kharchevsky, N.N. Bogachev and N.N. SkvortsovaEPJ Web Conf., 149 (2017) 03018DOI: https://doi.org/10.1051/epjconf/201714903018