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ISSN 1028-821X (Print)

SIMULATION AND EXPERIMENTAL RESEARCH ON CW CLINOTRON IN FRQUENCY RANGE 125…135 GHZ

heading: 
VACUUM AND SOLID STATE ELECTRONICS
Kovshov, YS, Kishko, SA, Ponomarenko, SS, Vlasenko, SA, Novikova-Korotun, YS, Zavertanniy, VV, Kuleshov, AN
Organization: 

1O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine
12, Proskura st., Kharkov, 61085, Ukraine
Е-mail: jeanalexkh@gmail.com

2V. N. Karazin Kharkiv National University
4 Svobody Sq., Kharkiv, 61022, Ukraine
https://doi.org/10.15407/rej2016.02.045
Language: Russian
Abstract: 

The development of compact oscillators of electromagnetic radiation capable of providing the output power higher than several Watt in millimeter and sub-millimeter ranges is an actual task for a large number of practical applications, in particular, to enhance the sensitivity of DNP NMR spectroscopy. The simulation of 130 GHz CW Clinotron was carried out on basis of experimental results of the earlier developed CW Clinotrons in 2mm wavelength range. Basing on the analysis of oscillator operation characteristics, the space charge dependence on frequency, Pierce parameter and the system electrical length were determined. The obtained results were used in the simulation of grating and in further simulation of operation parameters of clinotron tubes. Basing on simulation results, the clinotrons with homogeneous and four-stage grating were designed. The output power more than one Watt in CW clinotron with homogeneous grating in the frequency range 125…135 GHz was experimentally obtained. Start current and required focusing magnetic field were obtained in the experimental test in electromagnet. The experimental test also shows the close fit between simulation results and experimental data. The proposed methodic can be used in the simulation of CW clinotrons in both millimeter and sub-millimeter ranges.
Keywords: beam-wave interaction, clinotron, coupling impedance, dispersion, multi-stage grating, optimal phase shift

Manuscript submitted 10.042016
PACS 84.40.Fe
Radiofiz. elektron. 2016, 21(2): 45-52
Full text (PDF)

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