Dual‐band dual‐polarized shared‐aperture antenna with cross‐band scattering suppression

Abstract

A dual‐band dual‐polarized shared‐aperture antenna with suppression of cross‐band scattering for base station application is presented in this article. The proposed antenna consists of a lower‐frequency‐band (LFB) antenna and two 1 × 3 higher‐frequency‐band (HFB) arrays. The LFB antenna is designed with a novel configuration. Some chokes composed of inductive and capacitive elements are introduced for scattering current suppression of the cross‐band, which is the main reason for the deterioration of the radiation pattern of the HFB arrays. The measured results show that the LFB antenna with the operating frequency of 690–960 MHz and the HFB antenna with the operating frequency of 1710–2170 MHz achieve stable radiation characteristics in their respective bandwidth.

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.…”