发明授权
US06816122B2 Four-point feeding loop antenna capable of easily obtaining an impedance match
失效
能够容易获得阻抗匹配的四点馈电环形天线
- 专利标题： Four-point feeding loop antenna capable of easily obtaining an impedance match
- 专利标题（中）： 能够容易获得阻抗匹配的四点馈电环形天线
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申请号： US10352620申请日： 2003-01-28
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公开(公告)号： US06816122B2公开(公告)日： 2004-11-09
- 发明人: Junichi Noro , Masaaki Miyata , Isao Fukae , Akira Miyoshi , Toshihiko Inaba , Kenichi Taguchi , Takashi Horikawa , Wataru Sakaguchi
- 申请人： Junichi Noro , Masaaki Miyata , Isao Fukae , Akira Miyoshi , Toshihiko Inaba , Kenichi Taguchi , Takashi Horikawa , Wataru Sakaguchi
- 优先权： JP2002-020097 20020129; JP2002-070097 20020314; JP2002-091512 20020328; JP2002-093843 20020329
- 主分类号： H01Q1112
- IPC分类号： H01Q1112
摘要：
In an electromagnetic coupling type four-point feeding loop antenna (10) comprising a tubular body (11), a loop portion (12) having a loop width (W1), four feeders (13) each having a feeder width (W2), and four electromagnetic coupling wires (17) each having a coupling wire width (W3), the loop width, the feeder width, and the coupling wire width are substantially equal to one another. A gap (&dgr;) between the feeder and the electromagnetic coupling wire is laid in a range between 0.2 mm and 0.8 mm, both inclusive, when the electromagnetic coupling type four-point feeding loop antenna has a feeding impedance of a range between 25 &OHgr; and 100 &OHgr;, both inclusive.