Study of the generation intensity in the backward wave oscillator with a   ''grid'' diffraction grating as a function of the grating length
  Experimental studies of the backward wave oscillator with a ''grid'' diffraction grating that is formed by a periodic set of metallic threads inside a rectangular waveguide are proceeded with study of the generation intensity as a function of the grating length. 
V.G. Baryshevsky, N.A. Belous, V.A. Evdokimov, A.A. Gurinovich, A.S.   Lobko, P.V. Molchanov, P.F. Sofronov, V.I. Stolyarsky