The problem of electromagnetic stability of technical systems is now key in scientific researches and leans against the reached successes in the field of basic researches of physics of interaction of electromagnetic fields with objects and on achievements in methods of reproduction of fields.
Modern scientific researches in this area are characterised by the decision of private theoretical problems of influence of electromagnetic fields on separate elements and technical systems in three-dimensional statement. The offered complex of researches, first of all, is directed on working out of practical methods of maintenance of electromagnetic safety of vehicles (automatic telephone exchange) and estimations of stability of automatic telephone exchange from electromagnetic influences at stages of conceptual designing.
The maintenance of a new direction in a problem EMC, received the name «architectural shielding» is considered. Being based on fundamental concepts of the theory of electromagnetic shielding, it has absorbed in itself a number of the specific questions connected with realization shielding of premises and structures for the purpose of maintenance of information safety and electromagnetic compatibility in a wide spectrum of appendices. The characteristic is given to the central moments of architectural shielding, requirements to objects are formulated, actual directions of the further development of the theory and practical realization of problems of architectural shielding are defined.
The article examines the features of major international and national standardization systems, metrology and certification as a means to improve the competitiveness of products and services.
The Low Noise Amplifier (LNA) provides increasing of the power of both the signal and the noise present at its input, besides an additional noise and intermodulation distortion caused by out-of-band larger signals will be added. This article contains the experimental impact assessment of a signal to noise ratio (SNR) when using the radio-frequency filter with the LNA on the very high frequencies (VHF)
Indicators of maintainability of modern electronic devices greatly depend on the characteristics of reliability of electronic components. The impact of catastrophic electrical overstress due to electrostatic discharge can lead to failures of integrated circuits, which are widely used in electronic tools. The article considers the issues of assessing the impact of electrostatic discharges on the performance of maintainability of electronic means.
A review of the literature on internal electrification onboard avionics spacecraft. The influence of space weather on the degree of electrification of the spacecraft. The main responses to the factors affecting the electrification.
The problem of short-term power outages onboard satellite navigation system and its relationship with EMC. A system with a pulsed power source. The main causes and a recommendation to address the introduction of a power failure in the chain of additional capacitor. Among Micro-Cap simulated faults in the power supply system and calculated the additional capacitance of the capacitor.
The problem of electromagnetic compatibility of space onboard equipment the last time is considered from the point of view of ensuring fail-safe operation of this equipment in the conditions of radiation electrization. This article presents the results of computer modeling the impact of high conductivity of printed circuit assemblies of digital equipment for efficiency. The obtained simulation results were confirmed by experimental prototyping. As a result of research the authors have proved that using nano-conductive dielectrics as material for printed circuit assemblies does not impair the operation of digital devices and except the possibility of electrostatic discharges when radiation electrization in the field of outer space.
Qucs open-source circuit simulator and its applications for educational and research applications in field of EMC and ESD are considered. Its advantages and disadvantages are considered. New features introduced in Qucs are considered. One of the authors is Qucs developer.
Electrostatic Discharges, Interferences, Cables, Spacecraft, Onboard Electronics. This paper presents an original test equipment of the electrostatic discharge interferences in a spacecraft cables. Received current transformation into disturb voltage coefficients in the cable sections are used in calculation of interference levels at inputs of a spacecraft onboard radio-electronic equipment.
The article presents the results of the study of the errors of the method of structural analysis of multicomponent signals, formed by a linear superposition of the component identical in form, but different time of duration and amplitude. These signals are often found in the applied disciplines (electrical engineering, radio engineering, physics, chemistry, etc.) The developed method does not require a priori information about the structure of the linear combination, can be effectively implemented, high accuracy and provides the possibility of automation in the real time.
Are offered a technique and gauges of parametres of supershort electromagnetic pulses (SEP) at their distribution indoors. Results of researches of change of time structure SEP of an impulse by duration approximately 100 ps, extending in a typical laboratory premise are presented. Formation of the difficult electromagnetic signal arising owing to repeated rereflections primary SEP of an impulse, and also substantial growth of a share of these reflexions in a total signal of a field is registered at distance increase between a source and receiver SEP EMI.