Protection of direct current circuits of unmanned aerial vehicle by screen

摘要

Direct current circuits (power supply and control) of electronic equipment of unmanned aerial vehicle can be sources of unintentional electromagnetic emissions due to their connection with high-frequency circuits and functional nodes. This is one of the reasons for the unwanted dissemination of information and data. To eliminate this phenomenon it is proposed to shield the direct current circuits of unmanned aerial vehicle. The characteristics of the main types of known screens, materials for their fabrication, as well as the results of mathematical simulation of screening efficiency in the form of the dependence of the current penetration depth on the electromagnetic field frequency are considered. As the most effective screen is offered a wire braid made of steel wire with rectangular cross-section.