A 35 watt, CW, X-band traveling-wave tube for satellite applications

This paper describes a 35 watt, CW, X-band traveling-wave tube for satellite applications. The prototype models have demonstrated in excess of 35 watts over the frequency range of 7 to 8 Gcs with a minimum saturation gain of 41 db. Overall efficiency in excess of 29% has also been obtained. Under broadband conditions, the minimum saturated power output is 35 watts from 4.2 to 9.0 Gcs with the saturation gain varying from 28 db at the low end of the band to 43 db at 7.3 Gcs. The overall efficiency under these conditions is in excess of 27.7%.