| 摘要 |
<p>A feeding radiation electrode (21) and a non-feeding radiation electrode (22) are provided from a front side surface to top surface of a dielectric base (20). In the feeding radiation electrode (21), a slit (23) that extends from a feeding end (25) in an inward direction is formed, and, in the non-feeding radiation electrode (22), a slit (24) that extends from a ground end (26) in an inward direction is formed. In addition, on the non-feeding radiation electrode (22), a branch electrode (27) is formed so as to extend toward the side of the feeding radiation electrode (21). With this configuration, gains are obtained in two frequency bands by using a multi-resonance of fundamental wave resonances and harmonic resonances caused by the feeding radiation electrode and the non-feeding radiation electrode, and a good return loss characteristic caused by coupling of harmonic resonances is provided.</p> |
