| Summary: | Background. The study of dynamic processes of complex structures is the basis for studying the behavior
of the basic elements of electronic equipment. Designing complex electronics systems usually requires a detailed
representation of the main components and parts. To complete the design of a complex electronics system, a comprehensive
understanding of the functioning of internal system processes is required. Materials and methods. Currently,
there are many solutions based on numerical, analytical and empirical approaches. Analytical methods, in turn, are
divided into strict theoretical and based on the method of conformal transformations. Numerical methods are implemented
using software tools based on two basic methods: the boundary element method and the finite element method.
Results. In practice, it is preferable to use relatively simple models, since such expressions are easy to embed in modern
CAD designed for the design of electronic devices. In the literature one can find a comparison of the results obtained with
the help of calculations with experimentally measured values. For the practical application of a particular model, it is necessary
to know the accuracy of its results. Conclusions. Modern processors and FPGAs operate at a high frequency –
starting from 100 MHz and higher. At such a frequency, the rise time of the signal will be nanoseconds, and the large
capacitance of the line can prevent and significantly increase it, which will lead to a loss of a bit. Line capacitance greatly affects its impedance. An unbalanced transmission line impedance can cause the signal to be reflected at the end
of the line and returned to the transmitter. This can lead to its failure, as well as to false positives of the receiver.
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