%0 Journal Article %T The new wave-ring helical (WRH) slow-wave structure for traveling wave tube amplifiers %A Panahi, Nasser %A Saviz, S. %A Ghorannevis, M. %J Journal of Theoretical and Applied Physics %V 11 %N 4 %P 269-274 %@ 1735-9325 %D 2017-09-26 %I Springer Berlin Heidelberg %~ DeepDyve