A Compact Dual-Polarized Low-Pass Filtering Antenna With Wideband Out-of-Band Rejection

Tri‐band dual‐polarized base station antenna array with self‐decoupling ability

“…As seen in Figure 6A, distinct beam squint occurs, due to cross‐band scattering (see Ref. 2). The radiation energy is tilted to 270° < theta <360° directions, causing asymmetric radiation pattern with respect to the boresight direction (theta = 0°).…”

“…As demonstrated in Figure 6B, the realized gain of the HB subarray is considerably deteriorated to 7.9 dBi with the unloaded MB antenna (see Ref. 2). Using the DSs (see Ref.…”

“…As can be seen, heavy blockage of the unloaded MB antenna (see Ref. 2) leads to worse return loss (11.6 dB) and polarization isolation (21.3 dB). With the DSs (see Ref.…”

“…Multiband antennas and arrays are the key to meet the demands of modern mobile communication system with multiple standards and functions. For a multiband base station antenna array, conventional arrangements like side-by-side scheme [1][2][3] and nested scheme [4][5][6] inevitably possess large array aperture. To further compress the device volume and reduce windage, shared-aperture base station antenna array with interleaved or stacked configuration is a more desirable candidate.…”

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.…”