Journal of Radio Electronics. eISSN 1684-1719. 2002. ¹0
Full text in Russian (pdf)
DOI: https://doi.org/10.30898/1684-1719.2026.2.9
A Bandpass Filter Based on Microstrip Resonant
Structures with Modal Decomposition
and Electromagnetic Absorber Devices
U.V. Kalashnikiv, I.A. Ivantsov, E.S. Zhechev, R.S. Surovtsev
Tomsk State University of Control Systems and Radioelectronics,
634050, Russia, Tomsk, prospect Lenina, 40
The paper was received November 19, 2025.
Abstract. A method for suppressing spurious passbands in band-pass filters (BPFs) is presented, which involves adding a turn of a meander line (ML) coated with a magnetodielectric material. The proposed method was used to modify a third-order bandpass filter based on hairpin resonators. As a result, the layout dimensions increased from 24 × 20 mm2 to 35 × 26 mm2. Experimental results demonstrated an increase in the insertion loss at the center frequencies of the spurious passbands by at least 8 dB. The fabricated prototype of a BPF with an ML turn coated with a magnetodielectric material exhibited high out-of-band interference suppression. To evaluate the prototype's performance, a comparison was made with known solutions from other authors based on the calculation of N-norms. For this purpose, full-wave electromagnetic simulations of the filters from the other studies were performed. Analysis of the interference suppression characteristics showed that the prototype with the proposed modification is effective for suppressing both broadband and narrowband interference at frequencies above the passband.
Key words: band-pass filter, microstrip resonator, modal filtering, FSV method, narrowband interference, broadband interference, N-norms.
Financing: The work was carried out with the financial support of the Russian Science Foundation (Russian Science Foundation Project No. 24-79-00159) in TUSUR.
Corresponding author: Ivantsov Ilya Alexandrovich, ilia.a.ivantsov@tusur.ru
References
1. Zhou P. et al. IEEE 802.11 ay-based mmWave WLANs: Design challenges and solutions //IEEE Communications Surveys & Tutorials 20. – 2018. – No. 3. – p. 1654-1681.
2. Besprovodnye lokal'nye seti [Wireless local area networks]. URL: https://mosproject-eng.ru
3. Mollah M. N., Karmakar N. C., Fu J. S. Uniform circular photonic bandgap structures (PBGSs) for harmonic suppression of a bandpass filter //AEU-International Journal of Electronics and Communications 62. – 2008. – No. 10. – p. 717-724.
4. Wang K., Li J. A novel compact microstrip dual-band bandpass filter (BPF) using embeded SIRs for WLAN/WiMax application //2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE). – 2018. – p. 1-3
5. Yang L. et al. Analysis and design of wideband microstrip-to-microstrip equal ripple vertical transitions and their application to bandpass filters //IEEE Transactions on Microwave Theory and Techniques 62. – 2017. – No. 8. – p. 2866-2877
6. Zhang F. et al. A wideband microstrip elliptic bandpass filter with flexibly tunable bandwidth //2018 International Conference on Microwave and Millimeter Wave Technology (ICMMT). – 2018. – p. 1-3.
7. Kolmakova I. V., Kolmakov Ya. A. Mikropoloskovyj polosno-propuskayushchij fil'tr bez parazitnoj polosy propuskaniya [Microstrip bandpass filter without parasitic passband] //Izvestiya vysshih uchebnyh zavedenij Rossii. Radioelektronika. – 2005. – No. 1. – p. 71-74. (In Russian)
8. Chatterjee S., Das T. K. Compact hairpin-line bandpass filter with harmonic suppression by periodic grooves //2019 IEEE 19th Mediterranean Microwave Symposium (MMS). – 2019. – p. 1-4.
9. X. Jiao et al. EMI mitigation with lossy material at 10 GHz //2014 IEEE International Symposium on Electromagnetic Compatibility (EMC). – 2014. – p. 150-154.
10. Q. Liu et al. Modeling absorbing materials for EMI mitigation //2015 IEEE International Symposium on Electromagnetic Compatibility (EMC). – 2015, p. 1548-1552.
11. Surovtsev R. S. et al. Possibility of protection against UWB pulses based on a turn of a meander microstrip line //IEEE Transactions on electromagnetic compatibility 59. – 2017. – No. 6. – p. 1864-1871.
12. Zhechev Y. S., Adnan A. H., Malygin K. P. New technique for improving modal filter performance by using an electromagnetic absorber //IEEE Access 10. – 2022. – p. 86663-86670.
13. Trubcheninov V.A. Zhechev E.S. Primenenie radiopogloshchayushchego materiala v chetyrekhslojnoj zerkal'no-simmetrichnoj strukture s modal'nym rezervirovanie [Application of radio-absorbing material in a four-layer mirror-symmetrical structure with modal redundancy] // XVIII Mezhdunarodnaya nauchno-prakticheskaya konferenciya «Elektronnye sredstva i sistemy upravleniya» – Tomsk: TUSUR. –2022. – p. 324-326. (In Russian)
14. Rodrigues E. M. G., Godina R., Pouresmaeil E. Industrial applications of power electronics //Electronics 9. – 2020. – No. 9. – p. 1534.
15. Official website of the "Zipsil" company. URL: https://www.zipsil.ru/high-loss-microwave-absorber-silicone-compound
16. ÍÊÌÌ-13-13Ð.Official website of the "Pribor-Servis" company. URL: https://www.pribor-service.ru/catalog/radioizmeritelnye-pribory/nabory-mer/nabory-kalibrovochnyh-mer-dlya-vektornyh-analizatorov-tsepey-nkmm-13-13r.htm
17. IEEE Std 1597.1-2008. IEEE Standard for Validation of Computational Electromagnetics Computer Modeling and Simulations. – 2008. – p. 1-41.
18. Mora N. et al. Study and classification of potential IEMI sources //System design and assessment notes 41. – 2014.
19. ÃÎÑÒ MIL-STD-461F. Requirements for the Control of Electromagnetic Interference Characteristics of Subsystems and Equipment. – 2007.
20. ÃÎÑÒ IEC/TR 61000-1-5-2014. Electromagnetic Compatibility (EMC): High Power Electromagnetic (HPEM) Effects on Civil Systems. – 2004. – p. 43.
21. Eun J. W., Lee J. H. A microstrip dual-band bandpass filter using feed line with SIR //IEICE Electronics Express 14. – 2017. – No. 4. – p. 20170022-20170022.
22. Ma D. et al. Compact dual-band bandpass filter using folded SIR with two stubs for WLAN //Progress In Electromagnetics Research 117. – 2011. – p. 357-364
23. Lv S., Ge Y., Zhang W. Compact high-selectivity dual/tri-band bandpass filters for WLAN applications //Progress In Electromagnetics Research C 61. – 2016. – p. 131-138.
24. Lee J., Lim Y. A dual-band bandpass filter using dual and triple-mode resonators //2012 IEEE Radio and Wireless Symposium. – 2012. – p. 143-146.
25. Lahmissi A., Challal M. A Novel Microstrip Dual-Band Bandpass Filter Design with Harmonic-Suppression //2019 International Conference on Advanced Electrical Engineering (ICAEE). – 2019. – p. 1-5.
26. Thabet S. F., Ezzulddin A. S., Hamid O. T. Minimization and optimization in the performance of dual-band BPF by using E-shape microstrip structure //2016 8th International Conference on Electronics, Computers and Artificial Intelligence (ECAI). – 2016. – p. 1-6.
27. Murmu L., Das S. A dual-band bandpass filter for 2.4 GHz bluetooth and 5.2 GHz WLAN applications //Progress in Electromagnetics Research Letters 53. – 2015. – p. 65-70.
28. Giri D. V. High-power electromagnetic radiators: nonlethal weapons and other applications. – Harvard University Press, 2004.
29. ÃÎÑÒ IEC/TS 61000-4-33-2005. Electromagnetic compatibility (EMC): Testing and measurement techniques – Measurement methods for high-power transient parameters. – 2005. – p. 4-33.
For citation:
Kalashnikov Yu.V., Ivantsov I.A., Zhechev E.S., Surovtsev R.S. Band-pass filter based on microstrip resonant structures and devices with modal decomposition and electromagnetic absorber. // Journal of Radio Electronics. – 2026. – ¹. 2. https://doi.org/10.30898/1684-1719.2026.2.9