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Based on the field analysis method, tape-helix model was used to analyze the helical slow wave structure considering the helix turns to be effectively shorted by the resistive attenuator coating on dielectric helix-support rods. A smoothed out effective surface resistivity accounted for the resistive coating on discrete support rods. The attenuation and phase propagation constants as well as the interaction...
On the basis of the 1D Christine, under the condition of attenuator considered, that is, its RF (radio frequency) characteristics including attenuation constant, phase propagation constant and interaction impedance taken into account, in the meantime, two different attenuation models set up, the nonlinear properties of beam-wave interaction in the helix TWTs (traveling wave tubes) were analyzed, and...
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