LAUSR

A dual‐broadband, dual‐polarized base station antenna is demonstrated in this paper. The proposed antenna has five parts: the lower‐band element, the upper‐band element, the passive dipoles, the rectangle baffles, and the reflector. The lower‐band element comprises of two full‐wave dipoles to provide higher gain. The upper‐band elements are located at the vacant area formed by the orthogonal arms of the lower‐band element, like ikebana, to maintain the compact size unaltered. The lower‐band element exhibits horizontal/vertical polarization, while the upper‐band element exhibits ±45° polarization. This multipolarization mode can improve the port isolation between the lower‐band and upper‐band elements, thus enhancing the effect of the receiving and transmitting diversity. To adjust the half‐power beamwidths of the lower‐band and upper‐band elements, the passive dipoles and rectangle baffles are added to the original reflector. As a result, the antenna can cover 0.69 to 0.96 GHz for the lower band and 1.7 to 2.7 GHz for the upper band with high isolation. High gain over the entire working bands is obtained simultaneously. All the results reveal that the antenna has perfect performance and is suitable for the high‐low frequency hybrid application scenario of base stations.