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The Models for Evaluation of Environment Impact for the Circuit Board with Modal Reservation Using N-norms
The paper describes the effect of humidity and temperature on printed circuit board with a modal reservation and edge-coupling. Step by step, the development of a geometric model of a cross section, the calculation of matrices of primary and secondary parameters, the development of a schematic model, the obtaining simulation models, the development of N-norm models are presented. The calculated per-unit-length linear delays and time responses are given. Three cases of environmental impact were considered: the initial structure at a temperature of 25°C, a structure with a 1 mm thick layer of water covering it at a temperature of 25°C, and a structure with a 1 mm thick layer of ice covering it at a temperature of minus 50°C. Portraits of five N-norms along the conductor are showed with a comparison of their maximum and minimum values for three cases. It was found that humidity and temperature can significantly affect the values of N-norms, including along the conductor. The models obtained in this article will allow us to investigate the impact of the environment on printed circuit boards.