发明名称 |
Antenna operating in two frequency ranges |
摘要 |
The invention relates to an antenna structure D with at least two resonance frequency bands. It comprises a first antenna element (P2; P3) which is preferably a straight conductor, and a second antenna element (HX3; HX4) which is preferably a conductor wound into a cylindrical coil, the antenna elements having different resonance frequencies. A rod element (P2; P3) is partly inside a helical element (HX3; HX4) and they can comprise the same feed point (A4) or separate feed points (A5; A6). The antenna can comprise a third antenna element (HX5) which is preferably a conductor wound into a cylindrical coil comprising a different resonance frequency from the other two antenna elements. The antenna according to the invention is well-adapted to be used in a mobile phone operating in at least two cellular telephone systems using different frequencies.
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申请公布号 |
US6054966(A) |
申请公布日期 |
2000.04.25 |
申请号 |
US19960658620 |
申请日期 |
1996.06.05 |
申请人 |
NOKIA MOBILE PHONES LIMITED |
发明人 |
HAAPALA, PAIVI |
分类号 |
H01Q21/28;H01Q1/24;H01Q1/36;H01Q5/01;H01Q5/02;H01Q9/30;H01Q21/30;(IPC1-7):H01Q1/36 |
主分类号 |
H01Q21/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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