| 摘要 |
PROBLEM TO BE SOLVED: To provide a miniaturized, high-performance and low-cost integral dielectric resin antenna, capable of communication in different frequency bands. SOLUTION: The integrated dielectric resin antenna includes a plurality of antenna portions 1-3 respectively provided for mutually different frequency bands. Each of the plurality of antenna portions 1-3 is constituted of a dielectric formed of a dielectric resin composite material and a conductor, to form an integral structure by integrating each other. The dielectric resin composite material is produced by compounding synthetic resin with a filling material formed of dielectric inorganic powder. Thermoplastic resin is employed as the synthetic resin. The dielectric resin composite material capable of fusion molding, such as injection molding, extrusion molding, and compression molding is employed. As the filling material formed of dielectric inorganic powder, dielectric ceramic powder, preferably having a permittivity of 20 or more and a dielectric dissipation factor of 0.005 or less is employed. The filling material is formulated in a ratio of 10-40 vol.% capacity. COPYRIGHT: (C)2003,JPO
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