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Title: Power combination of two phase-locked high power microwave beams from a new coaxial microwave source based on dual beams

Abstract

The new coaxial high power microwave source based on dual beams has demonstrated two phase-locked output microwave beams generated by its two sub-sources. In order to achieve a single higher output power, we present a three-port waveguide-based power combiner to combine the two microwave beams. Particle-in-cell simulation results show that when the diode voltage is 675 kV and the guiding magnetic field is 0.8 T, a combined microwave with an average power of about 4.0 GW and a frequency of 9.74 GHz is generated; the corresponding power conversion efficiency is 29%. The combination effect of the combiner is further validated in the diode voltage range from 675 kV to 755 kV as well as in the pulse regime. The simulations indicate that the maximum surface axial electric field strength of the electrodynamic structure is 720 kV/cm, which is relatively low corresponding to an output power of 4.0 GW. The stable combined output suggests the probability of long-pulse operation for the combined source.

Authors:
; ; ; ;  [1]
  1. College of Optoelectric Science and Engineering, National University of Defense Technology, Changsha 410073 (China)
Publication Date:
OSTI Identifier:
22299712
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 21; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRIC FIELDS; ELECTRIC POTENTIAL; GHZ RANGE 01-100; MAGNETIC FIELDS; MICROWAVE RADIATION; PULSES; SIMULATION; WAVEGUIDES

Citation Formats

Li, Yangmei, Zhang, Xiaoping, Zhang, Jiande, Dang, Fangchao, and Yan, Xiaolu. Power combination of two phase-locked high power microwave beams from a new coaxial microwave source based on dual beams. United States: N. p., 2014. Web. doi:10.1063/1.4900417.
Li, Yangmei, Zhang, Xiaoping, Zhang, Jiande, Dang, Fangchao, & Yan, Xiaolu. Power combination of two phase-locked high power microwave beams from a new coaxial microwave source based on dual beams. United States. https://doi.org/10.1063/1.4900417
Li, Yangmei, Zhang, Xiaoping, Zhang, Jiande, Dang, Fangchao, and Yan, Xiaolu. 2014. "Power combination of two phase-locked high power microwave beams from a new coaxial microwave source based on dual beams". United States. https://doi.org/10.1063/1.4900417.
@article{osti_22299712,
title = {Power combination of two phase-locked high power microwave beams from a new coaxial microwave source based on dual beams},
author = {Li, Yangmei and Zhang, Xiaoping and Zhang, Jiande and Dang, Fangchao and Yan, Xiaolu},
abstractNote = {The new coaxial high power microwave source based on dual beams has demonstrated two phase-locked output microwave beams generated by its two sub-sources. In order to achieve a single higher output power, we present a three-port waveguide-based power combiner to combine the two microwave beams. Particle-in-cell simulation results show that when the diode voltage is 675 kV and the guiding magnetic field is 0.8 T, a combined microwave with an average power of about 4.0 GW and a frequency of 9.74 GHz is generated; the corresponding power conversion efficiency is 29%. The combination effect of the combiner is further validated in the diode voltage range from 675 kV to 755 kV as well as in the pulse regime. The simulations indicate that the maximum surface axial electric field strength of the electrodynamic structure is 720 kV/cm, which is relatively low corresponding to an output power of 4.0 GW. The stable combined output suggests the probability of long-pulse operation for the combined source.},
doi = {10.1063/1.4900417},
url = {https://www.osti.gov/biblio/22299712}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 10,
volume = 21,
place = {United States},
year = {Wed Oct 15 00:00:00 EDT 2014},
month = {Wed Oct 15 00:00:00 EDT 2014}
}