发明名称 |
Loop antenna apparatus with variable directivity |
摘要 |
A loop antenna apparatus is disclosed which includes a main conductive loop arranged on a first surface, a plurality of supplemental conductive loops connected to the main conductive loop and arranged on different surfaces from the first surface, respectively, a plurality of signal feeding points provided in different loops of the main and supplemental conductive loops, an output terminal and change-over switches for selectively connecting one of the plurality of signal feeding points to the output terminal.
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申请公布号 |
US4358769(A) |
申请公布日期 |
1982.11.09 |
申请号 |
US19810233387 |
申请日期 |
1981.02.11 |
申请人 |
SONY CORPORATION |
发明人 |
TADA, MASAHIRO;ICHIKAWA, HIROKAZU;FUKUSHIMA, MITSUO;NAKAMICHI, KOYA;OUCHI, KOJI;ISHIGAKI, YOSHIO |
分类号 |
H01Q3/24;H01Q7/00;(IPC1-7):H01Q11/12 |
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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