Double-Beam Millimeter-Wave Band BWT and TWT on a Spirally Bent Rectangular Waveguide

The designs of BWT and TWT of a millimeter range with two wide tape electron beams are proposed and investigated. It is proposed to use a spirally bent rectangular waveguide on fundamental H10mode as an electrodynamic structure of the tubes. Unlike existing designs on wavy bent waveguides, the proposed schemes allow to significantly increase the current of electron optics, which improves significantly the output characteristics. Analytical estimates have shown the possibility of effective interaction of the electron beam with both direct and backward electromagnetic waves for the certain values of control parameters of the systems.