Integral polepiece RF amplification tube for millimeter wave frequencies

摘要

An integral polepiece RF amplification tube for amplifying a millimeter wave RF signal is provided which has a laminate structure comprising a plurality of magnetic and non-magnetic conductive plates which are alternatingly and integrally formed together. The tube has substantially planar surfaces, which permit the attachment of a heat sink thereto. The non-magnetic plates each have a slot which provides a resonant cavity, and a portion of the magnetic plates have a notch which couples the cavities. A magnetic field induced into the tube provides focusing to an electron beam projected through a tunnel which passes through each of the cavities. The amplification tube can be configured for use as a coupled cavity traveling wave tube or a klystron.