Patent ID: 6747412
Filing Date: 2004-06-08
Classification: H01J

Abstract:
A traveling wave tube comprising:an electron gun structure, a slow wave structure through which an electron beam provided by said electron gun structure passes, and a collector structure, an elongated envelope enclosing said structures, said envelope being formed of insulating material and provided with a plurality of rods also formed of insulating material and supported longitudinally inside said envelope, said rods in turn rigidly supporting and aligning said electron gun structure, said slow wave structure, and said collector structure, and means for coupling an r.f. signal input to and receiving an r.f. signal output from said slow wave structure, wherein said slow wave structure has voltage applied thereto for providing electrostatic focussing of said electron beam, said slow wave structure providing amplification of the r.f. signal by interaction with said electron beam.