Using modified Chebyshev functions for approximation in 5G technologies
Yerzhan A. Nakisbekova B. Manbetova Z. Boykachev P. Imankul M. Dzhanuzakova R. Shedreyeva I. Karnakova G.
December 2024Institute of Advanced Engineering and Science
International Journal of Electrical and Computer Engineering
2024#14Issue 66508 - 6518 pp.
This research addresses the critical challenge of broadband matching in radio engineering, focusing on enhancing phase-frequency response (PFC) linearity across wide frequency bands. A novel approach, utilizing modified Chebyshev functions, demonstrates significant potential in reducing phase distortions within 5G technology applications. Unlike traditional Chebyshev functions, this method incorporates strategically placed transmission zeros—complex conjugate pairs on the s-variable complex plane—without increasing the filter circuits order. This innovation results in a low-order filter circuit characterized by uniform phase response and group delay characteristics (GDT), offering an effective solution for matching circuit design with less phase-frequency distortion and improved group delay uniformity across diverse load conditions. The modified Chebyshev approximation outperforms its classical counterpart in both phase linearity and selectivity within the 1 to 1.2 cutoff frequency range. This enhancement is crucial for the development of low-frequency filters, with broader implications for creating high-frequency, band-pass, and band-stop filters via known frequency transformations. Empirical results validate the proposed methods reliability and effectiveness, marking a significant advancement in the field of radio engineering by addressing broadband matching challenges with increased efficiency and simplified design implementations.
5G technology , Input impedance , Load impedance , Matching filter , Radio device
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Department of Telecommunication Engineering, Institute of Communications and Space Engineering, Non-profit Joint Stock Company, Almaty University of Power Engineering and Telecommunication named Gumarbek Daukeev, Almaty, Kazakhstan
Department of Radio Engineering, Electronics and Telecommunications, Faculty of Energy, Saken Seifullin Kazakh Agrotechnical Research University, Astana, Kazakhstan
Department of Tactics and Weapons of Radio Engineering Troops, Faculty of Air Defense, Military Academy of the Republic of Belarus, Minsk, Belarus
Department of Radio Engineering, Electronics and Telecommunications, L.N. Gumilyov Eurasian National University, Astana, Kazakhstan
Department Automation and Communication, M.Kh. Dulati Taraz Regional University, Taraz, Kazakhstan
Department of Telecommunication Engineering
Department of Radio Engineering
Department of Tactics and Weapons of Radio Engineering Troops
Department of Radio Engineering
Department Automation and Communication
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