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AssigneeCommunications and Power Industries, Inc., Satcom Division
InventorsMichael J. Cascone, Eric Oiesen, Edward L. Wright, Richard J. Dobbs
Estimating the term…
A klystron tube for amplifying signals at microwave radio frequencies utilizes an electron source for emitting electrons through a field focused by a high energy magnet in the RF section of the tube. After the electrons have passed through the active area of the tube, the electrons strike the collector which, in this case, is a multistage depressed collector. The multistages of the depressed collector are connected to high energy voltage sources of different potentials. The klystron tube with the multistage depressed collector is uniquely used here for the first time in a ground based satellite or terrestrial communications system.
A high power output vacuum electron device for use in a ground based satellite or terrestrial communications system, said device comprising:
In a ground based satellite or terrestrial communications system, a vacuum electron device including a source of electrons, said electrons being formed into a narrow beam, and a collector for collecting said electrons, a magnet surrounding and focusing said narrow beam, a magnetic flux of said magnet being parallel to and colinear with the centerline of said electron beam, said magnet having first open pole pieces along said centerline to focus and drive said electron beam, said magnet having second open pole pieces adjacent to an area of said source of electrons to initially focus said electron beam, said magnet having no open pole pieces in the vicinity of said collector so that any magnetic flux from the magnet is directed back into a body of said magnet.
A gun only magnet utilized in a multistage depressed collector of a high-energy vacuum electron device comprising a first pole piece region generating magnetic flux adjacent a cathode of said vacuum electron device to drive and initially focus electrons emitted from said cathode, and a second pole piece region forming magnetic flux along a path of electrons to focus said electrons into a narrow beam, said magnet having no pole piece in the region of said vacuum electron device where the electrons are collected at a collector and returned to said cathode, the vacuum electron device being a klystron, the improvement comprising a magnetic material surrounding the region of collected electrons such that substantially no magnetic field reversal presents at the region of the collected electrons, wherein the klystron being in a ground based satellite or terrestrial communications system.
Dependencies are inferred from the claim text.