| 摘要 |
The present invention relates to portable radiotelephones, and particularly to antennas for use therein. The use of portable radiotelephones, or mobile telephones, has increased rapidly over recent years. Advancements in technology have seen the size of such devices shrink rapidly. As in other areas, the desire for smaller and smaller devices continues. However, as radiotelephones become smaller, antennas are unable to be reduced accordingly in size, since their size is directly proportional to the frequency at which they are designed to operate. Common solutions to this problem, including the use of whip/helix combinations, are deemed unacceptable for miniaturised portable or wearable radiotelephones where it is undesirable to have a permanently protruding antenna. The present invention provides an antenna arrangement suitable for use in miniaturised radiotelephones which does not result in a permanently protruding antenna.
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