PROJECTION OF MICROSTRIP SELECTIVE DEVICES BASED ON IRREGULAR STRUCTURES TO PREVENT INFORMATION LEAKAGE IN HIGH POWER LINES

Abstract

The paper develops a microstrip filter for high insertion loss lines that can be applied to high power transmission lines. According to the structure of traditional band-stop filters, the implementation of a filter that can transmit a large current and have high introduced losses is achieved by increasing the order of the filter. A five-stage filter structure is proposed, which can realize input losses of more than 40 dB. The requirements for the width of an external microstrip line are shown, with specified characteristics in the frequency range of 2.40–2.49 GHz. The developed MSBSF has a number of advantages compared to traditional selective devices, it allows to prevent information loss in high-frequency telecommunication communication networks for high-power transmission lines. It is shown that the microstrip filter has satisfactory parameters in the microwave frequency range, and a simple and convenient structure and has properties of protection against the leakage of electromagnetic information of the conductivity of the power transmission line. The proposed filter does not require additional inclusion of a harmonic filter. As a result of better selectivity of the developed structure, the number of resonators can be reduced, which will lead to a reduction in losses, mass, dimensions and manufacturing costs. Although the operating frequency range of the filter is quite narrow (2.41-2.49 GHz), it can be expanded, which requires further modeling and testing. Bandpass filters with high selectivity and delay band filtering are important for suppressing broadband noise or interference in advanced modern communication systems. An analysis of the state of research in this direction shows that improving filtering technologies is the only way to prevent leakage of electromagnetic information, especially caused by conduction. The importance of research is due to the rapid development of high-speed communications in the high and ultra-high frequency bands.