Phased-array antenna and multi-face array antenna device

A phased-array antenna, comprising a liquid crystal cell, wherein

• the liquid crystal cell comprises an upper substrate, a lower substrate arranged opposite to the upper substrate to form a cell, and a liquid crystal layer arranged between the upper substrate and the lower substrate;
• the upper substrate comprises a first base substrate, a plurality of first bias electrodes arranged at a first surface of the first base substrate, and a plurality of radiating elements arranged at a second surface of the first base substrate opposite to the first surface of the first base substrate;
• the lower substrate comprises a second base substrate, a plurality of second bias electrodes arranged at a second surface of the second base substrate, and a ground electrode arranged at a first surface of the second base substrate opposite to the second surface of the second base substrate;
• the first base substrate and the second base substrate are both arc-shaped substrates;
• the first surface of the first base substrate and the first surface of the second base substrate are concave surfaces, the second surface of the first base substrate and the second surface of the second base substrate are convex surfaces, and the first surface of the first base substrate is arranged opposite to the second surface of the second base substrate;
• the plurality of first bias electrodes is arranged in at least one column on the first base substrate, and the first bias electrodes in each column comprise a plurality of first electrodes spaced apart from each other in a first direction;
• the plurality of second bias electrodes is arranged in at least one column on the second base substrate, and the second bias electrodes in each column comprise a plurality of second electrodes spaced apart from each other in the first direction;
• in the case that the first bias electrodes are arranged in a plurality of columns, the columns of first bias electrodes are spaced apart from each other in a second direction perpendicular to the first direction;
• the first bias electrodes in each column correspond to the second bias electrodes in a respective one column, and a projection of the first bias electrodes in each column onto a tangent plane of the second surface of the second base substrate and a projection of the second bias electrodes in the respective one column corresponding to the first bias electrodes onto the tangent plane are located in an identical line;
• and
• among the first bias electrodes in each column and the second bias electrodes in the respective one column corresponding to the first bias electrodes, the first electrodes and the second electrodes are arranged alternately in the first direction, a distance between two adjacent first electrodes is smaller than a length of one of the second electrodes in the first direction, and a distance between two adjacent second electrodes is smaller than a length of one of the first electrodes in the first direction.