| 摘要 |
Antennas and methods of manufacturing and using antennas suited for use in mobile devices are described. The described antennas include an antenna arm (104) and a conical spring radiating element (108) attached to one end of the arm. The spring radiating element (108) is covered by a protective cap (106) and can be compressed to fit inside the cap (106) for easy storage in a PC card. The antenna arm (104) may be implemented as a layered circuit board. In some embodiments the antenna arm (104) includes a radiating element, e.g., a conductive strip (1304), positioned along an edge of the arm (104) which will remain exposed even when the antenna is inserted into a PC card for storage. In various embodiments the spring radiating element (108) automatically extends when the antenna arm (104) is switched from a storage position to an active position, e.g., by pulling on the antenna arm to cause it to slide or swing out of a housing (102).
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