From Symmetry to Asymmetry: The Use of Additional Pulses to Improve Protection against Ultrashort Pulses Based on Modal Filtration

Anton O Belousov,Artem V Medvedev,Alexander M Zabolotsky,Alexander V Nosov,Talgat R Gazizov,Evgeniya B Chernikova,Mariya A Samoylichenko

doi:10.3390/sym12071117

Anton O Belousov, Artem V Medvedev + Show 5 more

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https://doi.org/10.3390/sym12071117

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Abstract

For the first time, the paper considers in a unified work the possibility of the appearance of additional pulses in various structures based on modal filtration technology, which is used to improve protection against ultrashort pulses (USP). We analyzed meander lines (ML) with broad-side coupling, structures with modal reservation (MR), reflection symmetric MLs, and modal filters (MF) with a passive conductor in the reference plane cutout and obtained the following results. It was found that the main reason for the additional pulses to appear in these structures is the introduction of asymmetry (of the cross-section, boundary conditions, and excitation). It is theoretically and experimentally established that additional pulses are a new resource for increasing the efficiency of protective devices with modal decomposition, but the highest effectiveness could be achieved through careful optimization.

Highlights

Radio-electronic equipment (REE) takes an increasingly significant place in human life
It was shown that the appearance of additional pulses in protective structures with modal decomposition is associated with asymmetry
For the first time, the paper considers in a unified work the possibility of the appearance of additional pulses in various structures based on modal filtration technology in order to improve protection against ultrashort pulses (USP)

Summary

Introduction

Radio-electronic equipment (REE) takes an increasingly significant place in human life. The use of electronics of varying level of complexity in various areas, from household to space, leads to aggravation of the electromagnetic compatibility (EMC) problem. The tendency to tighten EMC requirements arises because of the structural complication of REE, the increase in the upper frequencies of useful and interference signals and in the component density, as well as the need to take into account mutual influences at the levels of circuit elements, blocks, and systems. Due to the improvements in the capabilities of intentional electromagnetic interference (IEMI). Generators, protection against IEMI has been widely discussed in the EMC community in recent decades. Compatibility» has been devoted to it, in which the IEMI threat to complex electronic systems that are important for human life is considered [1]. The susceptibility of various electronic devices to the threat of ultrawideband and high-power microwave pulses has been reviewed in [2], and the mechanisms of how disturbances penetrate into REE have been discussed in [3]

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