Design and 3-D particle-in-cell simulation of a 140 GHz spatial-harmonic magnetron

Publikationstyp
Journal Article
Date Issued
2013
Sprache
English
Author(s)
Nasr Esfahani, Nasrin  
Tayarani, Majid  
Schünemann, Klaus  
Institut
Hochfrequenztechnik E-3  
TORE-URI
http://hdl.handle.net/11420/3432
Journal
Progress in electromagnetics research  
Volume
133
Start Page
443
End Page
458
Citation
Progress in Electromagnetics Research (133): 443-458 (2013)
Publisher DOI
10.2528/PIER12081310
Scopus ID
2-s2.0-84868601574
Publisher
EMW
This paper discusses design procedure and 3-D numerical simulation of a 140 GHz spatial-harmonic magnetron (SHM). The well known scaling laws and an approximate approach based on single harmonic analysis are used to determine the interaction space dimensions and the optimum geometrical parameters of the side resonators. Numerical simulations of the SHM were performed using CST-Particle Studio. Since the simulations are not based on artificial RF priming or assuming restrictive assumptions on the mode of operation or on the number of harmonics to be considered, electromagnetic oscillations grow naturally from noise. The presented SHM shows stable operation in the π/2-1-mode at 140 GHz over a range of DC anode voltages extending from 11.3 kV to 11.5 kV and for an axial magnetic flux density equal to 0.79 T. Output power of the SHM varies from 2 kW to 11 kW over these voltages with a maximum efficiency of about 6.8%.
DDC Class
600: Technik
620: Ingenieurwissenschaften