Waveguide Quarter-Wave Transverse Ridge Resonators on Quasi-TEM Wave and Filters on Their Basis
https://doi.org/10.32603/1993-8985-2025-28-3-95-105
Abstract
Introduction. In modern communication systems, the requirements imposed on the weight, size, and frequency characteristics of filters in the input and output paths of antenna-feeder devices (AFD) are becoming increasingly stringent. Taking this into account, we investigate a transverse waveguide ridge resonator of a quarter-wave structure. The use of a quarterwave resonator, rather than a half-wave structure, allows the width and length of the filter to be reduced. The influence of various resonator parameters on its resonant frequency is demonstrated. The dependence of the loaded Q-factor on the height of the transverse ridge quarter-wave resonator is calculated. The calculated waveguide filters on resonators of this type offer the possibility of forming attenuation poles both above and below the passband.
Aim. Investigation of various types of filters on ridge quarter-wave resonators, as well as evaluation of the rejection band by level and by width.
Materials and methods. Numerical studies were carried out using the methods of finite elements (FEM) and finite difference in the time domain (FDTD).
Results. Simulation of various types of fiveand ten-order filters on ridge quarter-wave resonators was performed. Five-order filters, depending on the arrangement of the resonators, are capable of forming attenuation poles both above and below the passband. A ten-order filter on transverse ridge quarter-wave resonators at receiving frequencies of the X-band (7.25…7.75 GHz) provides insertion losses of no more than 1.2 dB, while the attenuation level in the transmission frequency range (7.9…8.4 GHz) is at least 80 dB.
Conclusion. The use of filters on ridge quarter-wave resonators ensures a significant reduction in length and improvement in weight and size characteristics, while maintaining a high level of attenuation in the stop band.
About the Authors
A. А. SorkinRussian Federation
Alexander A. Sorkin, Master in "Radio Engineering" (2018), Postgraduate student of the Department of Radio Engineering
The author of 16 scientific publications. Area of expertise: passive devices and microwave filters.
79, Svobodny Ave., Krasnoyarsk 660041
A. V. Minakov
Russian Federation
Andrey V. Minakov, Dr Sci. (Eng.) (2021), Associate Professor (2024), Director of the Institute of Engineering Physics and Radioelectronics
The author of 300 scientific publications. Area of expertise: numerical modeling; mechanics and electrodynamics of continuous media.
79, Svobodny Ave., Krasnoyarsk 660041
Yu. P. Salomatov
Russian Federation
Yury P. Salomatov, Cand. Sci. (Eng.) (1982), Professor (2013) of the Department of Radio Engineering o
The author of 240 scientific publications. Area of expertise: phased arrays; digital phased arrays; quast-optical antennas.
79, Svobodny Ave., Krasnoyarsk 660041
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Review
For citations:
Sorkin A.А., Minakov A.V., Salomatov Yu.P. Waveguide Quarter-Wave Transverse Ridge Resonators on Quasi-TEM Wave and Filters on Their Basis. Journal of the Russian Universities. Radioelectronics. 2025;28(3):95-105. (In Russ.) https://doi.org/10.32603/1993-8985-2025-28-3-95-105