Broadband Multimode Antenna for Sub-6 GHz Base Station Applications
Keywords:
Base station antennas, broadband antenna, multimode antennaAbstract
In this paper, a novel dual-polarized multimode antenna is presented for sub-6 GHz base station applications. Two pairs of slotted patches act as the main radiator to excite two modes, and they are coupled with each other to bring the resonant frequency of the two modes together. Two baluns are orthogonally placed between the main radiator and the ground plane for impedance transforming and introducing a new mode at the lower frequency. The ends of the slotted patches are connected with a reversed T-shaped dipole to optimize the current path and introducing a new mode at the higher frequency. Measured results show that the prototype antenna can achieve a 15-dB impedance bandwidth of 2.30 ~ 3.96 GHz (53.1%) and an average gain of 9.67 ± 0.33 dBi in the operating band. The isolation is greater than 28.0 dB with a half-power beamwidth of around 64° among the operating frequency band. The proposed antenna can be a promising candidate for the fifthgeneration communication in the sub-6 GHz band.
Downloads
References
D. Z. Zheng and Q. X. Chu, “A multimode wideband +/- 45 degrees dual-polarized antenna with embedded loops,” IEEE Antennas and Wireless Propagation Letters, vol. 16, pp. 633-636, 2017.
Q. X. Chu, D. L. Wen, and Y. Luo, “Principle of multimode broadband antennas with resonatorloaded dipole,” in 2015 International Workshop on Antenna Technology, pp. 45-47, 2015.
X. K. Bi, G. L. Huang, X. Zhang, and T. Yuan, “Design of wideband and high-gain slotline antenna using multi-mode radiator,” IEEE Access, vol. 7, pp. 54252-54260, 2019.
B. Huang, W. F. Lin, J. L. Huang, J. Zhang, G. Zhang, and F. G. Wu, “A patch/dipole hybridmode antenna for sub-6GHz communication,” Sensors, vol. 19, no. 6, Mar. 2019.
J. Zhang and Z. X. Shen, “Dual-band sharedaperture UHF/UWB RFID reader antenna of circular polarization,” IEEE Transactions on Antennas and Propagation, vol. 66, no. 8, pp. 3886-3893, Aug. 2018.
Y. H. Cui, R. L. Li, and P. Wang, “A novel broadband planar antenna for 2G/3G/LTE base stations,” IEEE Transactions on Antennas and Propagation, vol. 61, no. 5, pp. 2767-2774, May 2013.
K. M. Luk and B. Q. Wu, “The magnetoelectric dipole-A wideband antenna for base stations in mobile communications,” Proceedings of the IEEE, vol. 100, no. 7, pp. 2297-2307, July 2012.
P. Chen, L. Wang, and T. Ding, “A dual-polarized Sakura-shaped base station antenna for 5G communications,” Applied Computational Electromagnetics Society Journal, vol. 35, no. 5, pp. 567-571, May 2020.
Z. L. Li, J. Q. Han, Y. J. Mu, X. H. Gao, and L. Li, “Dual-band dual-polarized base station antenna with a notch band for 2/3/4/5G communication systems,” IEEE Antennas and Wireless Propagation Letters, vol. 19, no. 12, pp. 2462- 2466, Dec. 2020.
Y. H. Cui, L. J. Wu, and R. L. Li, “Bandwidth enhancement of a broadband dual-polarized antenna for 2G/3G/4G and IMT base stations,” IEEE Transactions on Antennas and Propagation, vol. 66, no. 12, pp. 7368-7373, Dec. 2018.
D. Z. Zheng and Q. X. Chu, “A wideband dualpolarized antenna with two independently controllable resonant modes and its array for basestation applications,” IEEE Antennas and Wireless Propagation Letters, vol. 16, pp. 2014-2017, 2017.
K. M. Mak, H. W. Lai, and K. M. Luk, “A 5G wideband patch antenna with antisymmetric Lshaped probe feeds,” IEEE Transactions on Antennas and Propagation, vol. 66, no. 2, pp. 957- 961, Feb. 2018.
H. Tang, X. Z. Zong, and Z. P. Nie, “Broadband dual-polarized base station antenna for fifthgeneration (5G) applications,” Sensors, vol. 18, no. 8, Aug. 2018.
C. Ding and K. M. Luk, “A low-profile dualpolarized magneto-electric dipole antenna,” IEEE Access, vol. 7, pp. 181924-181932, 2019.
