Transverse mode electron beam microwave generator
AssigneeThe United States of America as represented by the United States National Aeronautics and Space Administration
InventorLawrence E. Wharton
Life of this patent
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Abstract
An electron beam microwave device having an evacuated interaction chamber to which are coupled a resonant cavity which has an opening between the resonant cavity and the evacuated interaction chamber and an electron gun which causes a narrow beam of electrons to traverse the evacuated interaction chamber. The device also contains a mechanism for feeding back a microwave electromagnetic field from the resonant cavity to the evacuated interaction chamber in such a way as to modulate the direction of propagation of the electron beam, thereby further amplifying the microwave electromagnetic field. Furthermore, provision is made for coupling the electromagnetic field out of the electron beam microwave device.
Claims15
An electron beam microwave device comprising:
- an evacuated interaction chamber;
- a means for generating a beam of electrons coupled to said evacuated interaction chamber;
- said beam of electrons substantially traversing said evacuated interaction chamber substantially along an axis of injection;
- a resonant cavity coupled to said evacuated interaction chamber, having an opening between said resonant cavity and said evacuated interaction chamber;
- a means for feeding back a microwave electromagnetic field from said resonant cavity to said evacuated interaction chamber for modulating the direction of propagation substantially transverse to said axis of injection of said electron beam;
- and
- a means for transmitting said microwave electromagnetic field out of said electron beam microwave device.
Dependencies are inferred from the claim text.