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Journal Radioengineering №12 for 2018 г.
Article in number:
Calculation and optimization of powerful coaxial-waveguide probe-type transitions using multiphysical models
Type of article: scientific article
DOI: 10.18127/j00338486-201812-14
UDC: 621.372.831.5
Keywords: coaxial-to-waveguide transition numerical optimization thermal breakdown multiphysical models heat equation finite element method.
Authors:

A.S. Kondrashov – Ph.D.(Eng.), Head of Department - Deputy Main Product Engineer, JSC «Russian Space Systems» (Moscow)

V.P. Meschanov – Honored Scientist of RF, Dr.Sc.(Eng.), Professor, Director of NIKA-Microwave, Ltd (Saratov) E-mail: nika373@bk.ru

N.F. Popova – Ph.D.(Eng.), Head of Department, NIKA-Microwave, Ltd (Saratov)

V.M. Rozhkov – Ph.D.(Eng.), Head of Research Division, JSC «Russian Space Systems» (Moscow)

Ya.V. Turkin – Senior Research Scientist, NIKA-Microwave, Ltd (Saratov) E-mail: turkin.yaroslav@gmail.com

Abstract:

In this work we investigate numerical optimization of the high power probe-type coaxial-to-waveguide transition. Theoretical analysis was carried out using multiphysical model of the coupled heat transfer and electromagnetic phenomena. This multiphysical model includes the temperature dependent complex dielectric permittivity of solid-state polymer insulators. The numerical calculation of thermal and electromagnetic properties of coaxial-to-waveguide transitions in the frequency range 3419…3919 MHz is accomplished. Moreover we provide numerical analysis of thermal breakdown in TNC coaxial connectors. Initial theoretical investigation of the thermal breakdown conditions was carried out using simplified analytical expressions of temperature-dependent complex dielectric permittivity of the solid-state polymers.

Pages: 111-119
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Date of receipt: 12 сентября 2018 г.