Ăng-ten phân cực kép cho các điểm truy cập vô tuyến 5G trong nhà

Abstract

In this paper, a high-isolation, wide-beam dual-polarized antenna is presented for 5G NR n78 band (3,3 – 3,8 GHz) indoor access points. The antenna compose of two perpendicularly bent arm cross dipole components, which are printed on separate substrates vertically placed on the ground plane. By exploiting the symmetry of the design, the high isolation feature is achieved with only a differential fed. In addition, the beamwidth is significantly broadened by incorporating parasitic monopole elements while keeping symmetry of the antenna. The simulated results show that the antenna has an impedance bandwidth of 23,4% (3,03 – 3,88 GHz) and port-to-port isolation > 45 dB. Moreover, the antenna achieves a peak half-power beam width of 135°/165° in the E/H planes.