Feng, H.; Li, M.; Zhang, Z.; Fu, J.; Zhang, Q.; Zhao, Y. Low-Profile Broadband Dual-Polarized Dipole Antenna for Base Station Applications. Sensors2023, 23, 5647.
Feng, H.; Li, M.; Zhang, Z.; Fu, J.; Zhang, Q.; Zhao, Y. Low-Profile Broadband Dual-Polarized Dipole Antenna for Base Station Applications. Sensors 2023, 23, 5647.
Feng, H.; Li, M.; Zhang, Z.; Fu, J.; Zhang, Q.; Zhao, Y. Low-Profile Broadband Dual-Polarized Dipole Antenna for Base Station Applications. Sensors2023, 23, 5647.
Feng, H.; Li, M.; Zhang, Z.; Fu, J.; Zhang, Q.; Zhao, Y. Low-Profile Broadband Dual-Polarized Dipole Antenna for Base Station Applications. Sensors 2023, 23, 5647.
Abstract
A low-profile broadband dual-polarized antenna is investigated for base station applications. It consists of two orthogonal dipoles, fork-shaped feeding lines, an artificial magnetic conductor (AMC), and parasitic strips. By utilizing the dispersion Brillouin diagram, the AMC is designed as the antenna reflector. It has a wide in-phase reflection bandwidth of 54.7% (1.54-2.70 GHz) and a surface wave bound range of 0-2.65 GHz. This design effectively reduces the antenna profile by over 50% compared to traditional antennas without an AMC. For demonstration, a prototype is fabricated for 2G/3G/LTE base station applications. Good agreement between simulations and measurements is observed. The measured -10-dB impedance bandwidth of our antenna is 55.4% (1.58 –2.79 GHz), with a stable gain of 9.5 dBi and high isolation of more than 30 dB across the impedance passband. As a result, this antenna is an excellent candidate for miniaturized base station antenna applications.
Keywords
dipole antenna; dual-polarized; low-profile; wideband artificial magnetic conductor
Subject
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
