| 主权项 |
1. An array antenna, configured to receive an input signal and radiate the received input signal in a form of an electromagnetic signal;
wherein the array antenna comprises a cavity power divider and a final-stage power dividing, coupling, and radiating unit assembled on the cavity power divider; wherein the cavity power divider is configured to receive the input signal and perform power division on the input signal to output a first power-divided signal to the final-stage power dividing, coupling, and radiating unit; wherein the final-stage power dividing, coupling, and radiating unit comprises a dielectric substrate, a first metal surface layer disposed on an upper surface of the dielectric substrate, and a second metal surface layer disposed on a lower surface of the dielectric substrate, a coupling slot array is formed on the second metal surface layer to receive the first power-divided signal, a radiating slot array corresponding to the coupling slot array is formed on the first metal surface layer, and several plated through-hole units are provided on the dielectric substrate; and wherein the plated through-hole units go through the first and second metal surface layers vertically, and a range corresponding to each plated through-hole unit encloses a coupling slot in the coupling slot array and a radiating slot in the radiating slot array and corresponding to the coupling slot, so that final-stage power division is performed on the first power-divided signal received by the coupling slot array to output a second power-divided signal to the radiating slot array and that the radiating slot array radiates the second power-divided signal. |
