K-band two-dimensional beam scanning liquid crystal reflection array based on subarray division

The invention discloses a K-band two-dimensional beam scanning liquid crystal reflective array based on subarray division, and belongs to the technical field of microwave antennas. According to the method, a novel subarray division distribution mode is adopted to divide the liquid crystal phase shift unit into three parts, and the three parts respectively correspond to a single liquid crystal phase shift unit, a 2 * 2 subarray unit and a 3 * 3 subarray unit; the peripheral part of the array adopts a single liquid crystal phase shift unit to improve the phase compensation precision, so that the array gain is improved, the side lobe level is reduced, and the middle part and the central part respectively adopt 2 * 2 and 3 * 3 sub-arrays to reduce the number of feeder lines. Through a novel subarray division mode, the number of feeder lines is reduced by 57%, and meanwhile two-dimensional beam scanning can be achieved within the range of +/-40 degrees. 本发明公开了一种基于子阵划分的K波段二维波束扫描液晶反射阵列，属于微波天线技术领域。本发明所述方法采用新型子阵划分的分布方