Estimation of losses per unit length in a rectangular waveguide with rough screening surfaces based on the concept of partial wavesVladimir Biryukov, Vladimir Grachev, Ekaterina Karakozova, Sergey Lobin and Vladimir ShcherbakovITM Web Conf., 30 (2019) 07001DOI: https://doi.org/10.1051/itmconf/20193007001