Abstract: The present invention provides a surface-mounting type antenna comprising: a base member made of an insulating material, including a first major surface, a second major surface opposite to the first major surface, and a plurality of side surfaces extending between the first and second major surfaces; a grounding electrode covering substantially the entire area of the first major surface of the base member; a strip-like radiation electrode mostly disposed on the second major surface, the radiation electrode having a first end and a second end, the first end being served as an open-ended terminal; a connecting terminal connected to the second end of the radiation electrode; a power-supply electrode disposed in the vicinity of the open-ended terminal of the radiation electrode; and a power-supply terminal connected to the power-supply electrode.

Abstract: An antenna apparatus has improved gain, and its characteristics are barely affected by changes in the external environment in which it used, such as when it is placed close to a ground conductor. A surface-mount antenna and a monopole antenna are fed by a single feeding point, and the direction of an open end of the surface-mount antenna, taking a ground end of a radiation electrode as a reference, runs opposite to the direction of the open end of the monopole antenna, taking the feeding terminal as a reference.