Abstract: An antenna apparatus for providing wireless communication comprise a first antenna plate, a second antenna plate and a matched circuit. The matched circuit has a front line and a transferring line so as to be formed as an appropriate impedance between the first antenna plate and the second antenna plate, wherein one end of the transferring line is coupled to the front line forming a T shaped converging portion having a first feedback point and a second feedback point. The first antenna plate has an electrical foot connecting to the first feedback point and a ground foot connecting to the ground. Similarly, the second antenna plate has an electrical foot connecting to the second feedback point and a ground foot connecting to the ground.