| 摘要 |
There is provided a foldable portable radio that can exhibit high phone call performance despite its low profile and small size. An antenna element 14 to be placed in the vicinity of a first hinge element 13A is connected to a power feed unit. The first hinge element 13A has a hinge fixing unit 131 and a hinge rotating unit 132. The hinge fixing unit 131 is connected to a second radio circuit 17B of a lower circuit board 12A by way of a second matching circuit 16B. The hinge rotating unit 132 is placed while spaced apart from a ground pattern on an upper circuit board 11A by a predetermined interval and connected to an end of the ground pattern of the upper circuit board that is close to the first hinge element 13A. The antenna element 14 and the first hinge element 13A configure a first dipole antenna. The ground pattern of the upper circuit board 11A and a ground pattern of the lower circuit board 12A configure a second dipole antenna that takes the hinge element 13A as a power feed system. The first hinge element 13A acts as a ground in the first dipole antenna and also as a power feed system in the second dipole antenna.
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