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Title: Microwave generator

Abstract

A microwave generator is provided for generating microwaves substantially from virtual cathode oscillation. Electrons are emitted from a cathode and accelerated to an anode which is spaced apart from the cathode. The anode has an annular slit there through effective to form the virtual cathode. The anode is at least one range thickness relative to electrons reflecting from the virtual cathode. A magnet is provided to produce an optimum magnetic field having the field strength effective to form an annular beam from the emitted electrons in substantial alignment with the annular anode slit. The magnetic field, however, does permit the reflected electrons to axially diverge from the annular beam. The reflected electrons are absorbed by the anode in returning to the real cathode, such that substantially no reflexing electrons occur. The resulting microwaves are produced with a single dominant mode and are substantially monochromatic relative to conventional virtual cathode microwave generators. 6 figs.

Inventors:
;
Issue Date:
Research Org.:
Los Alamos National Lab., NM (USA)
OSTI Identifier:
6771059
Patent Number(s):
-US-A6032262
Assignee:
TIC; EDB-88-179312
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; MICROWAVE EQUIPMENT; DESIGN; ANODES; BEAM OPTICS; CATHODES; INVENTIONS; NUMERICAL DATA; DATA; ELECTRODES; ELECTRONIC EQUIPMENT; EQUIPMENT; INFORMATION 440300* -- Miscellaneous Instruments-- (-1989)

Citation Formats

Kwan, T.J.T., and Snell, C.M. Microwave generator. United States: N. p., 1987. Web.
Kwan, T.J.T., & Snell, C.M. Microwave generator. United States.
Kwan, T.J.T., and Snell, C.M. Tue . "Microwave generator". United States.
@article{osti_6771059,
title = {Microwave generator},
author = {Kwan, T.J.T. and Snell, C.M.},
abstractNote = {A microwave generator is provided for generating microwaves substantially from virtual cathode oscillation. Electrons are emitted from a cathode and accelerated to an anode which is spaced apart from the cathode. The anode has an annular slit there through effective to form the virtual cathode. The anode is at least one range thickness relative to electrons reflecting from the virtual cathode. A magnet is provided to produce an optimum magnetic field having the field strength effective to form an annular beam from the emitted electrons in substantial alignment with the annular anode slit. The magnetic field, however, does permit the reflected electrons to axially diverge from the annular beam. The reflected electrons are absorbed by the anode in returning to the real cathode, such that substantially no reflexing electrons occur. The resulting microwaves are produced with a single dominant mode and are substantially monochromatic relative to conventional virtual cathode microwave generators. 6 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {3}
}