发明名称 |
Retractable multiple band antenna for cellular telephone |
摘要 |
The antenna comprises a whip antenna selectively connected to a matching network. There is a helical antenna with an elongated conductor formed as a spiral with a first section and a second section. The first spiral section has one pitch angle and the second spiral section has another pitch angle, different from the first. The pitch angles are selected to tune the helical antenna to a second resonant frequency. |
申请公布号 |
SE520070(C2) |
申请公布日期 |
2003.05.20 |
申请号 |
SE19990001184 |
申请日期 |
1999.03.31 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON |
发明人 |
YING ZHINONG;KENNETH HAAKANSSON |
分类号 |
H01Q;H01Q1/24;H01Q1/36;H01Q5/00;H01Q11/08;(IPC1-7):H01Q1/24 |
主分类号 |
H01Q |
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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