Study on single radial sheet beam azimuthal support angular log- periodic strip line Travelling Wave Tube

A new slow wave structure (SWS) of azimuthal support angular log-periodic strip line SWS is presented in this paper. An attractive property of the new structure is that the ability of resistance to electron bombardment is better than microstrip SWS. Applied a single radial sheet beam with the work voltage of 5920V and the current of 0.6A, the beam-wave interaction results show that the maximum output power, gain and electron efficiency are 300.3W, 14.8dB and 8.46%, respectively, in Ka band.