发明名称 |
ANTENNA DEVICE AND COMMUNICATION TERMINAL COMPRISING THE SAME |
摘要 |
<p>The present invention relates to an antenna mainly used in a cellular phone or the like and to a communication terminal using it. It is an object of the present invention to provide an antenna having a high radiation efficiency, a wide adjustable range of the impedance of the antenna, and a capability of matching with an RF circuit by the structure itself without using a matching circuit. The number of structural parameters increases for adjusting the impedance of the antenna. To achieve these objects, the antenna in a communication terminal of the present invention has a radiation element wound spirally around an insulating core in the winding direction inverted at an arbitrary position. The antenna is therefore capable of adjusting the impedance, and as a result, the number of structural parameters of the antenna increases, and the adjustable range of the impedance of the antenna is expanded. <IMAGE></p> |
申请公布号 |
EP1143553(A1) |
申请公布日期 |
2001.10.10 |
申请号 |
EP20000960960 |
申请日期 |
2000.09.13 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
FUKUSHIMA, SUSUMU;SATO, YUKI |
分类号 |
H01Q1/24;H01Q11/08;H01Q1/36;H01Q1/38;H01Q5/10;(IPC1-7):H01Q1/24 |
主分类号 |
H01Q1/24 |
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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