Research of Resonant Effects in Interconnects of Multilayer PCB of Computing Equipment

Multilayer printed circuit boards are widely used for the development of modern computing equipment. Often, in multi-layer printed circuit boards, electromagnetic compatibility problems arise. This leads to a distortion of information signals in interconnects. One of the reasons for the distortion of information signals in a multilayer printed circuit board is the resonant effects in interconnects. Resonant effects in interconnects can occur due to the presence of cutouts in the ground layer or power layer of board. These cutouts are present to connect any elements, connectors, etc. A tool is proposed in the work and simulation models for the analysis of resonance effects are developed. The distortion of information signals due to resonance effects in interconnects in the presence of cutouts in the ground layer is simulated. Comparison of the results of numerical modeling with experimental data indicates sufficient accuracy of the developed models.