Yu.E. Kalinin1, B.K. Krokhmal2, A.V. Ostankov3

1-3 FSBEI of HE “Voronezh State Technical University” (Voronezh, Russia)

1 kalinin48@mail.ru; 2 krohmalbk@mail.ru; 3 avostankov@mail.ru

Formulation of the problem. In numerous applications, sector radiation patterns of antennas are subject to stringent requirements concerning main-lobe uniformity within the operational sector, transition-slope steepness, and sidelobe levels. Classical synthesis methods for linear antenna arrays typically neglect the actual directivity of individual elements, while data on optimal amplitude-phase distributions for high-quality sector patterns remain virtually unavailable.

Purpose. To obtain quasi-optimal amplitude-phase distributions via parametric optimization for the synthesis of enhanced-quality sector radiation patterns using an equidistant linear antenna array, including the development of an objective function to be minimized, which incorporates angle-dependent weighting of the root-mean-square deviation.

Results. Parametric optimization of an 8-element linear antenna array was performed, yielding a set of quasi-optimal amplitude-phase distributions that enable synthesis of sector radiation patterns (60° width) with improved characteristics. Dependencies between the profile of the piecewise-constant weight function employed in the objective function and key sector-pattern metrics were established, enabling targeted adjustment of main-lobe ripple, sidelobe level, and transition steepness. It is demonstrated that transitioning to a curvilinear weight-function profile, optimized according to sector-pattern requirements both within the operational sector and in the suppression zone, represents a promising direction.

Practical significance. Angle-dependent weighting of the root-mean-square deviation facilitates synthesis of sector radiation patterns with enhanced parameters, including scenarios accounting for the actual element patterns of the antenna array.

Kalinin Yu.E., Krokhmal B.K., Ostankov A.V. Sector radiation pattern synthesis for antenna arrays // Radiotekhnika. 2026. V. 90. № 7. P. 24−28. DOI: https://doi.org/10.18127/j00338486-202607-04

1. Zelkin Ye.G., Sokolov V.G. Metody sinteza antenn: Fazirovannyye antenny reshotki i antenny s nepreryvnym raskryvom. M.: Sovetskoe radio. 1980. 296 s. (in Russian).
2. Vendik O.G. Sintez izluchateley s nemekhanicheskim pokachivaniyem izluchatelya. Izvestiya VUZov. Radiotekhnika. 1960. T. 3. № 1. S. 77–86 (in Russian).
3. Bakhrakh L.D., Kremenetskiy S.D. Sintez izluchayushchikh sistem (teoriya i metody rascheta). M.: Sovetskoe radio. 1974. 232 s. (in Russian).
4. Bird T. Fundamentals of aperture antennas and arrays. New York: John Wiley & Sons. 2016. 449 p.
5. Mitrokhin V.N., Propastin A.A. Sintez izluchayushchey sistemy, formiruyushchey sektornuyu diagrammu napravlennosti s minimizatsiyey effekta Gibbsa. Radiooptika. 2016. № 6. S. 1–13 (in Russian).
6. Ostankov A., Nechaev A., Dachian S. et al. Synthesizing the sector directional pattern with improved quality indicators. 2022 ELEKTRO. 2022. P. 1–5.
7. Ostankov A.V., Nechayev A.S., Dashyan S.YU. Sintez fazirovannoy antennoy reshetki s sektornoy diagrammoy napravlennosti. Vestnik Voronezhskogo gosudarstvennogo tekhnicheskogo universiteta. 2021. T. 17. № 3. S. 78–84 (in Russian).
8. Ostankov A., San K.M., Chernoyarov O., Pergamenchtchikov S. Potentially achievable levels of lateral radiation of an equal-amplitude nonuniformly-filled array. Proceedings of the 13th International Conference on Measurement. 2021. P. 216–219.
9. Chernoyarov O.V., Salnikova A.V., Kirpicheva I.A., Ostankov A.V. A simple method for increasing the equal-amplitude non-uniform linear thinned array directivity. 2019 5th International Conference on Frontiers of Signal Processing. 2019. P. 117–120.
10. Ostankov A.V., Kovalevskaya V.V. Formirovaniye sektornoy diagrammy napravlennosti lineynoy antennoy reshetki metodom parametricheskoy optimizatsii. Vestnik Voronezhskogo gosudarstvennogo tekhnicheskogo universiteta. 2025. T. 21. № 3. S. 113–120 (in Russian).