发明名称 |
Antenna apparatus and a portable wireless communication apparatus |
摘要 |
A microstrip antenna (MSA) above a ground plane, having a size corresponding to an operation frequency, at a junction point thereof, electrically connected to one end of a monopole antenna having a size corresponding to the operation frequency to operate as a complex antenna. A distance between the feed point of MSA and the junction point determines the input impedance for matching. A microstrip line or an (planer) inverted-F antenna may provide the MSA. The monopole element may be a monopole antenna or helical antenna. A portable wireless communication apparatus includes the antenna apparatus having a housing. The monopole antenna is connected to the MSA when the monopole antenna is extended from the housing. A switch may be provided between the monopole antenna and the MSA for diversity operation. The antenna apparatus may be formed on a Printed circuit board and folded.
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申请公布号 |
US6452558(B1) |
申请公布日期 |
2002.09.17 |
申请号 |
US20010768254 |
申请日期 |
2001.01.25 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SAITOU YUTAKA;NISHIKIDO TOMOAKI;HARUKI HIROSHI |
分类号 |
H01Q3/24;H01Q1/24;H01Q1/36;H01Q9/04;H01Q9/30;H01Q13/08;H01Q21/28;H01Q21/30;(IPC1-7):H01Q21/00 |
主分类号 |
H01Q3/24 |
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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