List of Articles Traveling wave tube (TWT) Open Access Article Abstract Page Full-Text 1 - Nonlinear study of injection process types into the traveling wave tube with hollow electron beam H. Bayati S. Saviz A. H. Sari 10.1007/s40094-019-0327-2 Open Access Article Abstract Page Full-Text 2 - The new wave-ring helical (WRH) slow-wave structure for traveling wave tube amplifiers Nasser Panahi S. Saviz M. Ghorannevis 10.1007/s40094-017-0266-8