Patent ID: 7786940
Filing Date: 2010-08-31
Classification: H01Q

Abstract:
1. An antenna structure comprising: a circuit board having a ground electrode thereon and including a non-ground region; a substrate mounted on the non-ground region of the circuit board; a capacitive-power-feeding radiating electrode performing an antenna operation provided on the substrate; and a ground line arranged to electrically connect the ground electrode provided on the circuit board and located adjacent to the non-ground region with the radiating electrode of the substrate, the ground line being provided in the non-ground region of the circuit board with the substrate mounted thereon; wherein the ground line is configured to include at least one turnback portion, a resonant-frequency adjusting element is provided on the ground line so as to connect adjacent line portions having a gap therebetween formed by the turnback of the line at the turnback portion and thereby shortcut a portion of the ground line, and the resonant-frequency adjusting element has a capacitance or inductance so as to adjust a resonant frequency of the antenna structure.