Journal of Radio Electronics. eISSN 1684-1719. 2025. ¹6

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Full text in Russian (pdf)

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DOI: https://doi.org/10.30898/1684-1719.2025.6.6

 

 

Influence of Electromagnetic Absorber Thickness

on the Characteristics of Differential Transmission

Lines in Integrated Design

 

V.A. Trubcheninov, S.V. Vlasov, Y. Zhechev

 

Tomsk State University of Control Systems and Radioelectronics,

634050, Russia, Tomsk, prospect Lenina, 40

 

The paper was received March 11, 2025.

 

Abstract. Modern trends in electronics development require the design of compact and high-performance devices operating under high levels of electromagnetic interference (EMI). A promising solution for ensuring the electromagnetic compatibility (EMC) of differential transmission lines (DTLs) is the use of electromagnetic absorbers (EAs). However, the influence of the absorber thickness on the time-domain and frequency-domain characteristics of integrated DTLs remains insufficiently studied. This study employs modeling methods implemented in the software tools TUSUR.EMC and COMSOL Multiphysics. A DTL on a GaAs substrate is considered, with the EA thickness varied from 0 to 20 µm. The investigation includes an analysis of transmission and reflection coefficients, signal integrity, and propagation delays. The research aims to determine the optimal EA thickness that provides maximum interference suppression while minimizing its impact on the useful signal. The results show that an EA with a thickness of 8 µm reduces interference amplitude by a factor of 1.4, increases signal arrival time by a factor of 1.15, and decreases the level of reflected signals in the stopband to minus 13.16 dB. However, the passband width decreases from 2.41 GHz (at H = 0) to 1.03 GHz (at H = 20 µm). Thus, the use of an EA with an optimal thickness significantly improves the EMC of integrated DTLs. The obtained results can be utilized in the design of high-frequency devices with enhanced immunity to interference.

Key words: time-domain response, differential transmission line, integrated implementation, frequency characteristics, electromagnetic absorber.

Financing: the work was carried out within the framework of the project FEWM-2024-0005 of the Ministry of Education and Science of Russia.

Corresponding author: Trubcheninov Vyacheslav Anatolyevich, slava.trubcheninov@mail.ru

 

References

1. Babunko S.A.; Orlov O.S. Complex miniaturization of the microwave devices (in Russian) // Physics of wave processes and radio engineering systems. – 2010. – Ò. 13. – ¹. 1. – Ñ. 61-72.

2. Letavin D.A. Miniaturization of the microstrip microwave devices: master's thesis: Cand. – 2016.

3. Boreiko D., Khrolenko T., Yakovlev A. Unified LC bandpass filters made by integrated technology // Sovremennaya Elektronika. – 2015. – ¹. 7. – Ñ. 38-40.

4. Boreyko D.A.; Knyazeva A.R. Integral inductance coils with the reduced area (in Russian) // Technika Radiosvyazi. – 2021. – ¹. 1. – Ñ. 86-94.

5. Lima D.A.C. et al. Review of Bus Differential Protection Using IEC 61850 // Energies. – 2022. – Ò. 15. – ¹. 24. – Ñ. 9537.

6. Zhou P. et al. A novel ultra-wideband common-mode suppression circuit based on multi-mode transmission line // 2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT). – IEEE, 2018. – Ñ. 1-3.

7. Kosteletskiy V.P.; Zabolotskiy A.M. Strip structure protecting against the ultra-short pulses in the differential and in-phase modes (in Russian) // Control, communication and security systems. – 2021. – ¹. 2. – Ñ. 130-141.

8. Isaicheva A.V. et al. Influence of side electromagnetic radiations and interference on the transmitted information in dvi and hdmi digital video interfaces // Concepts, tools and technologies of modern science and technology development. – 2023. – Ñ. 73-76.

9. Bogodistova E.S. Analysis of the physical and logical organization of the USB interface (in Russian) // Innovation, information and communication technologies. – 2020. – Ñ. 197-203.

10. Dugin E. Application of Samtec QStrip QTH/QSH series inter-board connectors for high-speed data transfer in the 3rd generation PCI Express systems with 8 GT/s bandwidth // Components and technologies. – 2015. – ¹. 9. – Ñ. 126-130.

11. Egorov D.V.; Bobkov V.D. Investigation of the ways to combat electromagnetic interference on printed circuit boards // Fundamental and Applied Scientific Research: current issues, achievements and innovations. – 2019. – Ñ. 51-53.

12. Yurkov N.K.; Andreev P.G.; Zhumabaeva A.S. Problem of the electromagnetic compatibility assurance of the radio electronic means (in Russian) // Proceedings of the International Symposium “Reliability and Quality”. – 2015. – Ò. 1. – Ñ. 201-203.

13. Kosteletskiy V.P. Review of the hybrid filters for the protection of the radio-electronic means from the conductive interference (in Russian) // Reports of Tomsk State University of Control Systems and Radioelectronics. – 2022. – Ò. 25. – ¹. 1. – Ñ. 37-47.

14. Zhang M. et al. Electromagnetic absorber converting radiation for multifunction // Materials Science and Engineering: R: Reports. – 2021. – Ò. 145. – Ñ. 100627.

15. Trubcheninov V.A., Vlasov S.V., Zhechev Y.S., Zabolotsky A.M. Method of layout of electromagnetic absorbers in the structures of small-size modal filters. // Journal of Radio Electronics. – 2024. – ¹. 10. https://doi.org/10.30898/1684-1719.2024.10.14 (In Russian)

16. Ëèñò øèðîêîïîëîñíîãî ïîãëîòèòåëÿ ÑÂ×-ýíåðãèè ÇÈÏÑÈË 601 ÐÏÌ-01 (ÑÂ×-ïîãëîòèòåëü). Îôèöèàëüíûé ñàéò êîìïàíèè «Çèïñèë»: https://www.zipsil.ru/high-loss-microwave-absorber-silicone-sheets/ (äàòà îáðàùåíèÿ: 30.10.2024).

17. Kechiev L. Printed circuit boards and nodes of gigabit electronics. – Litres, 2018.

18. Zhou Y., Chen Y. Properties of mixed‐mode S‐parameters // Microwave and Optical Technology Letters. – 2008. – Ò. 50. – ¹. 11. – Ñ. 2869-2874.

19. Kuksenko S.P. et al. New possibilities of the TALGAT electromagnetic compatibility modeling system // Reports of Tomsk State University of Control Systems and Radioelectronics. – 2015. – ¹. 2 (36). – Ñ. 45-50.

20. Zimmerman W.B.J. Introduction to COMSOL multiphysics // Multiphysics modeling with finite element methods. – 2006. – P. 1-26.

 

For citation:

Trubcheninov V.A., Vlasov S.V., Zhechev Y. Investigation of the influence of an electromagnetic absorber on the time and frequency characteristics of a differential transmission line // Journal of Radio Electronics. – 2024. – ¹. 6. https://doi.org/10.30898/1684-1719.2025.6.6 (In Russian)