| 摘要 |
The present invention provides an array antenna, including a cavity power divider and a final-stage power dividing, coupling, and radiating unit. The cavity power divider receives an input signal and performs power division to output a first power-divided signal. The final-stage power dividing, coupling, and radiating unit includes a dielectric substrate, a first metal surface layer, and a second metal surface layer; 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, where 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 and a radiating slot corresponding to the coupling slot, so that final-stage power division is performed on the first power-divided signal to output a second power-divided signal to the radiating slot array and that the radiating slot array radiates the second power-divided signal. The present invention achieves an objective of increasing bandwidth. |
