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Analysis of Thermal Regime of Promising Energy Outputs of W-band High-Power Vacuum Microwave Devices

MetadataDetails
Publication Date2023-11-21
AuthorsEvgeniia A. Bogomolova, Alexander N. Savin, Elena V. Medyankova, Grigorii G. Shchuchkin
InstitutionsMIREA - Russian Technological University

It is essential to guarantee the design’s manufacturability, electrical and thermal strength, and mechanical robustness while creating energy outputs in the mm-wavelength range. The dielectric material used for the vacuum-tight energy output diaphragm must have both high thermal conductivity and thermal stability. Oxides of aluminum or beryllium, polycrystalline boron nitride and polycrystalline diamond are mainly used as materials for vacuum-tight diaphragms. The paper presents the results of studying by numerical methods the thermal regime of ceramics made of oxides of aluminum and beryllium, polycrystalline boron nitride and diamond as part of vacuum-tight microwave energy output for mm-range electrovacuum devices (EVD). A comparison of heat-dissipating capacity of various vacuum-tight energy output designs was carried out using various dielectrics. Based on the results of the analysis, a dielectric material was determined combining the necessary electrodynamic and heat-dissipating properties, availability and manufacturability.

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