A chip antenna (10) comprising a rectangular substrate (11) essentially comprising barium oxide, aluminum oxide and silica; a conductor (12) which is formed inside the substrate (11) and spiralled along the longitudinal direction thereof; a feeding terminal (13) provided on the side and bottom faces of the substrate (11) so as to apply a voltage to the conductor (12); and a grounding terminal (14) which is provided on the side and bottom faces of the substrate (11) and connects to a grounding electrode on a mounting board at the time of packaging. One end of the conductor (11) forms a feeding end (15) connecting to the feeding terminal (13) and the other end forms a free end (16) in the substrate (11). Capacitance is generated between a portion of the conductor (12) and the grounding terminal (14). <IMAGE>
