Parameters Optimization of Structures with Multiple Modal Reservation with Taking into Account Extreme Temperatures

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Abstract
An approach to improving the reliability and interference immunity of radio-electronic equipment elements by using modal reservation is considered. Optimization results of three structures with multiple modal reservation on a FSD1020T substrate material with two variants of its thickness and line length of 0.06 m are presented. The studied structures include 3-conductor microstrip lines with asymmetry and symmetry of cross-section and excitation and a 4-conductor structure with side polygons. Optimization was performed using amplitude and time criteria. A model was developed and implemented to account for extreme temperatures when simulating structures with modal reservation on a substrate made of FSD1020T material with thermal conductivity parameters λ=0.68W/m*K, relative permittivity εr=10.2±0.05 and loss angle tangent tgδ=0.003 at a frequency of 10 GHz. An analysis of the characteristics of structures with multiple modal reservation and optimized parameters under extreme temperatures was conducted. It is shown that the maximum output amplitude and time intervals between decomposition pulses remain stable with temperature variations.
Funding Information
  • Russian Science Foundation (20-19-00446-P)

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