Pulsed-power diode generation of high-power microwaves

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The generation of microwave radiation at gigahertz frequencies in high-voltage pulsed-power diodes has been investigated with electromagnetic particle simulations. Pulsed power in the form of a 0.5-1.0 MV, TEM wave is fed to the diode via a 5-cm diameter cylindrical stalk onto which a 30-cm diameter cathode has been mounted. Located some 3 to 5 cm in front of the cathode is a foil anode grid. As the TEM wave propagates between the stalk and an outer cylindrical cage (70-cm diameter) a stream of electrons are emitted off the stalk when the local electric field exceeds 200 kV/cm. This flow ... continued below

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Pages: 5

Creation Information

Peratt, A.L.; Mostrom, M.A.; Kwan, T.J.T. & Thode, L.E. January 1, 1983.

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Description

The generation of microwave radiation at gigahertz frequencies in high-voltage pulsed-power diodes has been investigated with electromagnetic particle simulations. Pulsed power in the form of a 0.5-1.0 MV, TEM wave is fed to the diode via a 5-cm diameter cylindrical stalk onto which a 30-cm diameter cathode has been mounted. Located some 3 to 5 cm in front of the cathode is a foil anode grid. As the TEM wave propagates between the stalk and an outer cylindrical cage (70-cm diameter) a stream of electrons are emitted off the stalk when the local electric field exceeds 200 kV/cm. This flow is then magnetically insulated and confined by the induced B/sub theta/ fields resulting from the 25- to 50-kA current flow within the stalk. Convex shaping of the cathode surface allows the emitted electrons to form a virtual cathode beyond the grid, then phase bunch to produce narrow bandwidth 1-GHz microwaves over an area equal to that of the cathode. The electromagnetic radiation from the dipole-like electron motions centered on the grid, which follow closely the classical Barkhausen-Kurz description, are reported.

Physical Description

Pages: 5

Notes

NTIS, PC A02/MF A01; 1.

Source

  • 5. international conference on high power particle beams, San Francisco, CA, USA, 12 Sep 1983

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  • Other: DE84001344
  • Report No.: LA-UR-83-2622
  • Report No.: CONF-830911-31
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 5717838
  • Archival Resource Key: ark:/67531/metadc1092959

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • January 1, 1983

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • May 30, 2018, 1:14 p.m.

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Peratt, A.L.; Mostrom, M.A.; Kwan, T.J.T. & Thode, L.E. Pulsed-power diode generation of high-power microwaves, article, January 1, 1983; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1092959/: accessed November 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.