| 摘要 |
PCT No. PCT/SE96/01549 Sec. 371 Date May 12, 1998 Sec. 102(e) Date May 12, 1998 PCT Filed Nov. 26, 1996 PCT Pub. No. WO97/20360 PCT Pub. Date Jun. 5, 1997An antenna device for a radio communication apparatus. The antenna device includes a rod antenna and a helical antenna, both of which are connectable to a transceiver. The helical antenna has an active state for receiving an emitting electromagnetic energy, and a passive state. The helical antenna is transferable from the active state to the passive state by axial compression. Preferably, the helical antenna is axially compressed into the passive state when the rod antenna is moved to an active position.
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