K.V. Kobrin1, Z. Li2, V.A. Sledkov3, M.B. Manuilov4

1,4 Southern Federal University (Rostov-on-Don, Russia)

2,3 Guangzhou Compass Technology Co., Ltd. (China)

4 m_manuilov@mail.ru

A novel modification of the all-metal dual-polarization radiator based on crossed dipoles is proposed for broadband antennas of base station for modern mobile communication systems. The Bezier curves of 3rd order were used for approximation of the dipole arm profile, which provide fine-tuning of the crossed dipoles mutual coupling and expansion of the operating frequency band during multi-variable optimization of the dipoles without complication of the radiator design. The developed radiator has high impedance matching and ports isolation in the frequency band 1.35-2.85 GHz, which exceeds the octave. In this range, the reflection coefficients of the coaxial ports is less than |S11|, |S22| < -17 dB, and the isolation |S21| < –30 dB. The radiation pattern of the antenna element has a stable symmetrical shape in the operational frequency range. The beam width in horizontal plane is 122°…134° for the level -10 dB, side lobe level is less than -20 dB and cross polarization component is -20 dB. High performance of the 8-element linear antenna array of this type of dipoles has been studied and confirmed. The proposed modification of the antenna can be used in other frequency ranges, as well as in multi-band and multi-beam antenna systems.

Kobrin K.V., Li Z., Sledkov V.A., Manuilov M.B. Antenna array of wide-band dual-polarization all-metal radiators for mobile communication systems. Electromagnetic waves and electronic systems. 2025. V. 30. № 1. P. 27−36. DOI: https://doi.org/10.18127/ j15604128-202501-03 (in Russian)

1. Bao Z., Nie Z., Zong X. A Novel Broadband Dual-Polarization Antenna Utilizing Strong Mutual Coupling. IEEE Transactions on Antennas and Propagation. 2014. V. 62. № 1. P. 450–454. DOI 10.1109/TAP.2013.2287010.
2. He Y., Yue Y. A novel broadband dual-polarized dipole antenna element for 2G/3G/LTE base stations. IEEE International Conference on RFID Technology and Applications. 2016. P. 102–106. DOI 10.1109/RFID-TA.2016.7750738.
3. Chen W.-J., Wang J.P. Broadband dual-polarized high gain lens antenna array for base station applications. IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. 2017. P. 827–828. DOI 10.1109/ APUSNCURSINRSM.2017.8072456.
4. He Y., Yue Y., Zhang L., Chen Z.N. A Dual-Broadband Dual-Polarized Directional Antenna for All-Spectrum Access Base Station Applications. IEEE Transactions on Antennas and Propagation. 2021. V. 69. № 4. P. 1874–1884. DOI 10.1109/TAP.2020.3026919.
5. He Y., Huang W., He Z., Zhang L., Gao X., Zeng Z. A Novel Cross-Band Decoupled Shared-Aperture Base Station Antenna Array Unit for 5G Mobile Communications. IEEE Open Journal of Antennas and Propagation. 2022. V. 3. P. 583–593. DOI 10.1109/OJAP.2022.3173159.
6. Chen W., Lin H., Ding H., Liu Y., Chisala M., Shen Z., Zhibin H., Baihui L., Wang R. A Low Profile Broadband Dual-Polarized Base Station Antenna Using Folded Dipole Radiation Element. IEEE Access. 2019. V. 7. P. 67679–67685. DOI 10.1109/ACCESS.2019.2918303.
7. Rudakov V.A., Li Z., Sledkov V.A., Taranenko V.V., Manuilov M.B. Dual-Polarized Dipole Array with Controlled Beam Tilt and Wide Radiation Pattern for Multi-Beam Antenna of Base Stations. Radiation and Scattering of Electromagnetic Waves. 2021. P. 171–174. DOI 10.1109/RSEMW52378.2021.9494048.
8. Kobrin K.V., Zimeng Li, Sledkov V.A., Manuilov M.B. Dual polarized antenna array of planar dipoles for mobile communication base stations of 3,3–5,9 GHz band. Antennas. 2021. № 3. P. 50–58. DOI 10.18127/j03209601-202103-07. (in Russian)
9. Kobrin K., Li Z., Sledkov V., Manuilov M. A Broadband Dual-Polarized Planar Dipole Antenna Array for Sub-6 GHz Base Stations. 7th All-Russian Microwave Conference. 2020. P. 180–183. DOI 10.1109/RMC50626.2020.9312284.
10. Kobrin K., Li Z., Sledkov V., Manuilov M. Wideband Dual Polarized All-Metal Dipole Array for Base Stations of Mobile Communications. Radiation and Scattering of Electromagnetic Waves. 2023. P. 396–399. DOI 11.1109/RSEMW58451.2023.10201990.
11. Bartels R.H., Beatty J.C., Barsky B.A. An Introduction to Splines for Use in Computer Graphics and Geometric Modelling. San Francisco: Morgan Kaufmann. 1998. 485 p.
12. Rogers D., Adams J. Mathematical foundations of machine graphics. Moscow: Mir. 2001. 604 p. (in Russian)
13. Ansys HFSS. [Electronic resource] – Access mode: https://www.ansys.com, date of reference 17.10.2024.