Antenna device associated wireless communication apparatus and associated control methodology for multi-input and multi-output communication systems

摘要

An antenna device has a substrate of insulation and a conductive flat antenna main body having a predetermined shape. The flat antenna main body is positioned on the substrate. The antenna device also has conductive polarization control elements that are positioned along a transverse line across the flat antenna main body over an insulation region of the substrate. The antenna device further has switching elements each being connected with the flat antenna main body and each of the polarization control elements. The switching elements switch the polarization control elements to select polarization that a flat antenna radiates.