Common antenna assembly and common antenna structure

A common antenna assembly, comprising:

• a substrate defining a first direction and a second direction that is perpendicular to the first direction;
• a plurality of patch antennas uniformly distributed on the substrate, wherein the patch antennas are arranged along the first direction and the second direction, and the patch antennas are defined into a plurality of antenna units that are arranged in a plurality of rows or a plurality of columns, wherein each of the antenna units includes four of the patch antennas arranged in two rows parallel to the first direction and two columns parallel to the second direction, wherein in the antenna units of any one of the rows parallel to the first direction, any two of the antenna units adjacent to each other jointly share a longitudinal shared antenna unit that is defined by two adjoining ones of the patch antennas, and the longitudinal common antenna unit is arranged along the second direction, and wherein in the antenna units of any one of the columns parallel to the second direction, any two of the antenna units adjacent to each other jointly share a horizontal common antenna unit that is defined by two adjoining ones of the patch antennas, and the horizontal common antenna unit is arranged along the first direction;
• a matching network electrically coupled to the patch antennas;
• and
• a plurality of phase shifters respectively and electrically coupled to portions of the matching network that respectively correspond in position to the antenna units, so that each of the phase shifters is capable of being used to adjust phases generated from the four of the patch antennas of the corresponding antenna unit, and wherein a number of the phase shifters is equal to a number of the antenna units.