A Dual-polarized L-shaped Probe-fed Broadband Phased Array Antenna

In this paper, a dual-polarized broadband low-profile phased micro-strip antenna array is proposed. In order to achieve broadband characteristics, the design of L-shaped probe feed structure and patch slotted structure of the array antenna are adopted. In the design process of the antenna unit, combined with simulation verification, the influence of key parameters on the change of the standing wave curve of the antenna unit is analyzed. The profile height of the antenna is 3. 56 mm, which is about 0. 15 times of the high frequency wavelength. It can meet the application requirements of low profile height phased array antenna. The simulation results show that the antenna array can achieve a relative bandwidth of 64. 9% ( active standing wave ration ≤ 2. 5) in the scanning angle domain of ± 45° and a relative bandwidth of 57. 9% ( active standing wave ratio ≤ 3) in the scanning angle domain of ±60°, and has good polarization purity.