Analysis and systematization of external tracing of printed conductors based on a symmetrical structure with modal filtering

Authors: Zhechev E. S., Ivantsov I. A., Kozinets A. S.

Annotation: To improve the functional safety of radioelectronic equipment, a redundancy of its components, parts, and interconnections is used. In contrast to the widely used cold redundancy, the modal reservation (MR) technology protects nodes and interconnections from ultra-wideband interference (UWB) by modal distortions. There are several approaches and methods to ensure a multiple MR. These methods have different design features, electrical and mass-size characteristics, and scope of application. Of special interest are the structures with conduc- tor symmetry along two planes that allow realizing triple MR with the same efficiency of UWB interference suppression for any circuit. This work aims to present a novel analysis and systematization of methods of multiple MR based on symmetrical structures. To solve this problem, we evaluated the technology effectiveness of eight MR methods, their operability, and efficiency. The authors performed an evaluation of decomposed pulses for each structure before and after failure using N-norms. It is found that all investigated structures with modal redundancy allow to significantly attenuate the ultrawideband pulse.

Keywords: modal reservation, electromagnetic compatibility, ultra-wideband interference, functional safety, reflectionsymmetric structure, interconnections, transmission line