| 摘要 |
An antenna assembly (35) mounted to a mobile communication set by a holder (61) to be retractable therein and extendable therefrom comprises a whip antenna (51) having a contact (57) and a helical antenna (43) joined with each other through an insulator joint member (39). The holder (61) is connected to a transceiver circuit in the set. In an extended position, the whip antenna (51) is fed from the transceiver circuit through the contact (57) and the holder (61). A conductive sleeve (49) is connected to the helical antenna (43) and mounted on the joint member (39) to be in contact with the holder (61) in the retracted condition whereby the helical antenna (43) is fed by the transceiver circuit. The joint member (39) is fixed at opposite end portions to the whip antenna (51) and the sleeve (49) with an intermediate portion left therebetween and having an axial length selected from a range of 4 and 7 mm.
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