发明名称 |
ANTENNA APPARATUS FOR USE IN MOBILE RADIO COMMUNICATION APPARATUS |
摘要 |
In a state that a whip antenna 101 is contained in a housing 110 of a cellular phone, a minute space dl is formed between a feeding spring 117 and an attaching member 112 conductive to a screw antenna base portion 120, so as to generate electrostatic capacitance, which is equivalent to the impedance characteristic of mono-pole antenna 114. Then, electrostatic capacitance and a coil portion of a screw antenna 113 constitute an LC series resonance circuit so as to improve the wide band of screw antenna 113.
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申请公布号 |
CA2293285(C) |
申请公布日期 |
2002.11.26 |
申请号 |
CA19992293285 |
申请日期 |
1999.04.26 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YANAGIBASHI, HIDEHIRO;EGAWA, KIYOSHI;KOYANAGI, YOSHIO;YAMAZAKI, MASAZUMI |
分类号 |
H01Q1/08;H01Q1/10;H01Q1/24;H01Q1/36;H01Q1/50;H01Q5/00;H01Q9/32;H01Q11/08;(IPC1-7):H01Q1/24 |
主分类号 |
H01Q1/08 |
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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