| 摘要 |
PROBLEM TO BE SOLVED: To provide a UWB antenna capable of improving the matching characteristic and reducing the return loss in comparison with those in the case of direct feeding. SOLUTION: In the UWB antenna (10) including an upper side dielectric body (11), a lower side dielectric body (13), and a conductor pattern (15) held between them, the conductor pattern comprises: a conductor inverse triangle part (15-1) having an apex (151) apart from a feeding point (17) located nearly in the middle of a front side (10f) by a prescribed gap and having a conductor right side taper part (152) and a conductor left side taper part (153); and a conductor semicircular part (15-2) the bottom side of which is in contact with an upper side of the conductor inverse triangle part. The UWB antenna (10) furthermore includes a feeding pattern (25) connected to the feeding point (17). Thus, feeding from the feeding pattern to the conductor pattern is carried out by electromagnetic coupling. COPYRIGHT: (C)2005,JPO&NCIPI
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