| 摘要 |
The components are an antenna element (1) made by forming a prescribed electrode against a dielectric base (10), which has a prismatic shape or a shape that matches the chassis of a wireless communication device, a first LC parallel circuit provided between a feed element (11) and a feed circuit, and a second LC parallel circuit provided between a parasitic element (12) and the ground. A feed element, which comprises a feed radiation electrode, and the parasitic element, which comprises a parasitic radiation electrode, are formed such that the complex resonant frequency when the first and the second LC parallel circuits have 0 impedance will be an intermediate frequency between a low operating frequency and a high operating frequency. The inductors in the LC parallel circuits shift the fundamental wave resonant frequencies of the feed element and the parasitic element to lower operating frequency bands, and the capacitors of the LC parallel circuits shift the fundamental wave resonant frequencies of the feed power element and the parasitic element to higher operating frequency bands. |
