List of Articles Traveling wave tube Open Access Article Abstract Page Full-Text 1 - Plasma effect in tape helix traveling-wave tube S. Saviz F. Salehizadeh 10.1007/s40094-014-0125-9 Open Access Article Abstract Page Full-Text 2 - The effect of beam and plasma parameters on the four modes of plasma-loaded traveling-wave tube with tape helix S. Saviz 10.1007/s40094-014-0135-7 Open Access Article Abstract Page Full-Text 3 - 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 4 - Investigating variations of the electron beam voltage on the traveling wave tube output power in the different frequencies F. Sheykhe Sh. Saviz M. Salem 10.1007/s40094-018-0292-1 Open Access Article Abstract Page Full-Text 5 - 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