Analysis and simulation of vircators with step circular waveguides

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Abstract

Previously, it has been shown that higher power microwaves can be generated from vircators with an abrupt discontinuity in circular waveguides. In this paper, the effects of the distance of the waveguide step from the anode on the microwave output and the dominant microwave frequency via two-dimensional, relativistic, electromagnetic, particle-in-cell code are investigated. As a result, it is shown that the dominant microwave frequencies are concentrated in two bands centered roughly at 8.24 and 11 GHz. As the distance of the waveguide step from the anodes increases from 0 to 7 cm, the dominant microwave frequency hops between lower and higher frequency bands. Among each band, the frequency gradually decreases with increasing distance of the waveguide step.

Original languageEnglish
Number of pages1
JournalIEEE International Conference on Plasma Science
Publication statusPublished - 1994

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circular waveguides
Circular waveguides
Microwave frequencies
microwave frequencies
Waveguides
waveguides
Anodes
anodes
Microwaves
microwaves
simulation
Frequency bands
discontinuity
Cells
electromagnetism
low frequencies
output

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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abstract = "Previously, it has been shown that higher power microwaves can be generated from vircators with an abrupt discontinuity in circular waveguides. In this paper, the effects of the distance of the waveguide step from the anode on the microwave output and the dominant microwave frequency via two-dimensional, relativistic, electromagnetic, particle-in-cell code are investigated. As a result, it is shown that the dominant microwave frequencies are concentrated in two bands centered roughly at 8.24 and 11 GHz. As the distance of the waveguide step from the anodes increases from 0 to 7 cm, the dominant microwave frequency hops between lower and higher frequency bands. Among each band, the frequency gradually decreases with increasing distance of the waveguide step.",
author = "Y. Hu and Yung-Chiang Lan",
year = "1994",
language = "English",
journal = "IEEE International Conference on Plasma Science",
issn = "0730-9244",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

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