A lower profile base station antenna: With dual‐polarization and dual‐band for sub‐6 GHz application

Abstract

A compact dual-band antenna is designed in this paper, which consists of a pair of lower band (LB) element and four higher band (HB) elements operating at 0.69 to 0.96 GHz and 3.3 to 3.6 GHz, respectively. Four HB elements are put between the adjacent dipole arms of LB element. All of elements are at the same height, and having their own reflector. A designed dual-band dualpolarized antenna at high frequency ratio will be fulfilled without added any other structure. The fabricated antenna sample has been measured, results show that the average gains of LB and HB elements are 8.48 dBi and 8.44 dBi and the half power beam widths are 69.1 ± 9 and 60.7 ± 8.5 , respectively. Moreover, dual-polarized property of both LB and HB is checked. The crosspolarization discrimination values are greater than 15 dB. The proposed antenna is implemented the coverage of two bands with high frequency ratio with a simple structure, and the antenna with both low profile and high gain characteristics. All of the results demonstrate that the antenna radiation boasts its favorable performance and can be a good candidate in 5G mobile communication system for sub-6 GHz base stations.

Artificial magnetic conductor‐backed dual‐band shared‐aperture antenna array for base station applications

“…Here, the aperture of the LB antenna fully overlaps with those of the HB antennas, so the total aperture of the antenna array is not increased. In this respect, typical antenna placement schemes like embedded scheme, [2][3][4][5][6][7] interleaved scheme, [8][9][10][11][12][13][14][15][16][17][18][19] and stacked scheme [20][21][22][23][24][25][26][27] have been invented. To achieve further miniaturization, profile reduction should also be considered in shared-aperture antenna array design.…”

A broadband compact filtering antenna forsub‐6 GHzbase station applications

“…With the rapid development of mobile communication, the complexity of wireless communication systems continues to increase, some subarrays are required to work in the multiband base‐station arrays 1 . Nevertheless, strong mutual interference between these closely spaced antennas will lead to deteriorate the radiation pattern.…”

Wideband dual‐polarized wide solid angle scanning cylindrically conformal millimeter‐wave phased array

“…However, the bandwidth of above arrays is narrower than 10%. Most sub-6 GHz wideband dual-polarized base station antennas are inspired by cross dipoles fed by vertical balun, [9][10][11][12][13] which is difficult be applied to mmWave base stations. 14 Therefore, appropriate cylindrically-conformal phased array with wide band, dual-polarization, and wide-angle scanning characteristics is still needed to be researched for mmWave base stations.…”