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Design and simulation of a π/2-mode spatial-harmonic magnetron
Publikationstyp
Journal Article
Date Issued
2013-05-05
Sprache
English
Institut
TORE-URI
Volume
67
Issue
5
Start Page
426
End Page
432
Citation
AEU - International Journal of Electronics and Communications 5 (67): 426-432 (2013)
Publisher DOI
Scopus ID
Publisher
Elsevier
Design and 3D numerical simulations of a 37.5 GHz spatial-harmonic magnetron (SHM) are presented. The effect of geometrical parameters of the side resonators of the anode block on output power are considered using the results of a theory based on the single harmonic approximation approach. This theory enables determination of the optimum geometrical parameters of the side resonators. SHM design evaluation is carried out via numerical simulations performed with a 3D particle-in-cell (PIC) code embedded in CST-Particle Studio. Effect of varying the external quality factor and DC-anode voltage on output power, efficiency and stability of operation are also considered. The presented SHM shows stable operation in the π/2-mode over a range of DC anode voltages extending from 12.4 kV to 13 kV and for an axial magnetic flux density equal to 0.53 T. RF output power of the SHM varies from 25 kW to 47 kW over these voltages with a maximum efficiency of around 18.5%.
Subjects
Beam-wave interaction
Particle-in-cell simulation
Space charge
Spatial-harmonic magnetron
DDC Class
600: Technik
620: Ingenieurwissenschaften