Antenna apparatus, communication apparatus and steering adjustment method thereof

An antenna apparatus, a communication apparatus, and a steering adjustment method thereof are provided. The antenna apparatus includes an antenna structure. The antenna structure includes an antenna unit. The antenna unit includes i feeding ports, wherein i is a positive integer larger than 2. A vector of each of the feeding ports is controlled independently. In the steering adjustment method, a designated direction is determined, wherein the designated direction corresponds to beam directionality of the antenna structure. In addition, the vectors of the feeding ports of the antenna unit are configured according to the designated direction. Accordingly, the antenna size can be reduced, and beam steering in multiple directions would be achieved. 本发明提供一种天线装置、通讯装置及其转向调整方法。天线装置包括天线结构。此天线结构包括一个天线单元，且此天线单元包括i个馈入部。各馈入部的向量独立地受控，且i是大于2的正整数。在转向调整方法中，决定指定方向，此指定方向对应于天线结构的波束指向性。此外，依据此指定方向设定此天线单元的馈入部的向量。藉此，可降低天线尺寸，亦可使波束达成数个指向的转向。