期刊
IEEE TRANSACTIONS ON PLASMA SCIENCE
卷 48, 期 12, 页码 4356-4364出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPS.2020.3021041
关键词
Dispersion; Impedance; Electron beams; Harmonic analysis; Oscillators; Computational modeling; Waveguide discontinuities; Backward wave oscillator (BWO); high power microwave (HPM); metamaterial (MTM); slow-wave structure (SWS); split ring resonator (SRR)
资金
- AFOSR MURI [FA9550-12-1-0489]
- AFOSR [FA9550-18-1-0355]
A high-power-microwave (HPM) source consisting of a backward wave oscillator (BWO) based on a metamaterial slow wave structure (MTM SWS) is investigated and tested. The MTM SWS is composed of a circular waveguide with periodic loading of two complementary electric split-ring resonator (CeSRR) disks and was designed at the University of California, Irvine, CA, USA (UCI). This SWS has been studied and simulated to quantify its cold structure properties. Moreover, a BWO using the proposed SWS has been simulated using a particle-in-cell solver to evaluate its performance. In the simulations, this BWO has generated 88-MW peak power in a pulse duration on the order of 15 ns with frequency about 2.9 GHz. This SWS was fabricated using 3-D printing and copper plating technology and was tested using the SINUS-6 pulsed electron beam accelerator at the University of New Mexico, Albuquerque, NM, USA (UNM). An output of 22 MW at 3.0 GHz was observed in experiments.
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