E.A. Nefedov1, A.Yu. Ganitsev2, O.V. Terekhin3, A.A. Makaryan4

1–4 Moscow Aviation Institute (National Research University) (Moscow, Russia)

1 enefyodov9@gmail.com

The development of mobile communications is associated with the development of new frequency bands to solve the problems of increasing network capacity. Mobile operators use equipment powered by 2G (GSM), 3G (WCDMA), and 4G (LTE) technologies. The introduction of 5G involves the use of at least one of the bands: 3,3–3,8 GHz and/or 4,4–5,0 GHz. The placement of additional antennas is not always possible, as strict restrictions are often imposed on the weight and size characteristics of base stations, and additional equipment is required to connect the antennas to the transceiver modules. The task of developing combined antenna arrays operating in several frequency ranges and providing the required electrical characteristics for each subband is becoming urgent. Approaches to combining two frequency bands in a single aperture, including the use of dual-band radiators and a combination of single-band radiators in fifth-generation mobile antenna systems are analyzed in this paper. The effect of frequency-selective structures on antenna parameters such as bandwidth, isolation between inputs in the same range and isolation between ranges, and the level of out-of-band radiation is investigated.

Nefedov E.A., Ganitsev A.Yu., Terekhin O.V., Makaryan A.A. Approaches to combining frequency bands in antenna arrays for LTE and 5G mobile communication equipment. Achievements of modern radioelectronics. 2025. V. 79. № 11. P. 13–31. DOI: https://doi.org/10.18127/j20700784-202511-02 [in Russian]

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