Patent attributes
According to one embodiment, a first antenna element is formed from a folded monopole element having one end connected to a feeding terminal, and the other end connected to a first ground terminal, with a stub being provided between a forward portion and a backward portion formed by folding a middle portion. A second antenna element is formed from a monopole element having one end connected to the feeding terminal directly or indirectly through part of the first antenna element. A third antenna element is formed from a parasitic element having one end connected to a second ground terminal provided at a position opposite to the first ground terminal through the feeding terminal, and the other end open, with at least part of the parasitic element being placed parallel to the second antenna element so as to be configured to be capacitively coupled to the second antenna element.