Patent ID: 6369511
Filing Date: 2002-04-09
Classification: H01J,H03F

Abstract:
A travelling-wave tube amplifier comprising:a travelling-wave tube causing interaction between an electron beam and an input high frequency signal to amplify the high frequency signal and to cause a velocity modulation of the electron beam, said travelling-wave tube outputting an amplified high frequency signal; a plurality of collector electrodes capturing the electron beam, and being subjected to the velocity modulation of the electron beam; a plurality of collector leads electrically connecting each of said collector electrodes to a power source; and at least one magnetic core comprising a respective through hole, wherein any two of the plurality of said collector leads pass through said through hole in one of said magnetic cores, and respective currents flowing through said two collector leads passing through said through hole in said magnetic core generate corresponding magnetic fluxes in said magnetic core with directions which are reversed from each other.