Electric lamp and discharge devices: systems – Cathode ray tube circuits – Combined cathode ray tube and circuit element structure
Patent
1980-12-10
1983-07-05
Chatmon, Jr., Saxfield
Electric lamp and discharge devices: systems
Cathode ray tube circuits
Combined cathode ray tube and circuit element structure
315 3, 315 5, 315 535, H01J 2500
Patent
active
043920780
ABSTRACT:
The invention relates to an electron discharge device in which radio frequency energy is generated or amplified by high speed electrons traveling in a beam along the axis of a waveguide and subjected to a periodic magnetic field. The periodic field causes the electrons to travel in periodic orbits producing electromagnetic energy. When suitably adjusted, the energy in the beam is converted into electromagnetic energy of a given frequency. The device herein disclosed has an improved magnetic structure for causing the beam to travel in a helical path and for focusing it as it pursues this path. The helical path is produced by a static, spatially circularly polarized transverse field. Focusing of the beam is achieved by a pair of similar helically disposed axial magnetic fields having mutually opposite polarization. The fields are created by a plurality of short permanent magnets with cooperating pole pieces for directing the magnetic fields into the waveguide, and disposed in four rows arranged about the perimeter of the waveguide.
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Cleaveland Bryan L.
Noble Milton L.
Baker Carl W.
Chatmon, Jr. Saxfield
General Electric Company
Lang Richard V.
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