In the paper, a broadband dual-polarized antenna suitable for micro base station is introduced which covers 2/3/4/5G frequency bands. The antenna includes four rectangular radiators, two crossed Y-shaped feeders, a mental reflector and four nylon support columns. By introducing L-shaped and rectangular slots in each radiator, the bandwidth is broadened to meet the needs of broadband characteristics. The bandwidth of the antenna reaches 64.1% (1.42 - 2.76 GHz), and the isolation between two ports is greater than -30dB. In the 2/3/4G frequency bands (1.71 - 2.69 GHz), the antenna gain is 8.5 ± 1.2dBi, and in the L-band (1.427 - 1.518 GHz), the antenna gain is also achieved above 6dBi, which proves the antenna has excellent performance so that can be applied to 2G, 3G, 4G and 5G micro base station applications.
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Zhang et al. (2024) studied this question.
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