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公开(公告)号:US07342499B2
公开(公告)日:2008-03-11
申请号:US11340234
申请日:2006-01-26
申请人: Lihu M. Chiu , Hai Cao , John Kinley
发明人: Lihu M. Chiu , Hai Cao , John Kinley
IPC分类号: G08B13/14
CPC分类号: H01Q1/2208 , H01Q1/52 , H01Q5/371 , H01Q9/0407
摘要: In one embodiment, a multi-band near-field antenna for an RFID encoder includes a substrate; an internal coil antenna defined within the substrate; an annular ground plane defined on a first surface of the substrate; a second ground plane defined on an opposing second surface of the substrate, wherein the annular ground plane and the second ground plane form a Faraday cage for the internal coil antenna; and a second antenna disposed on the opposing second surface within the annulus defined by the annular ground plane.
摘要翻译: 在一个实施例中,用于RFID编码器的多频带近场天线包括基板; 限定在所述基板内的内部线圈天线; 限定在所述基板的第一表面上的环形接地平面; 限定在所述基板的相对的第二表面上的第二接地平面,其中所述环形接地平面和所述第二接地平面形成用于所述内部线圈天线的法拉第笼; 以及设置在由环形接地平面限定的环形空间内的相对的第二表面上的第二天线。
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公开(公告)号:US20070171071A1
公开(公告)日:2007-07-26
申请号:US11340234
申请日:2006-01-26
申请人: Lihu Chiu , Hai Cao , John Kinley
发明人: Lihu Chiu , Hai Cao , John Kinley
IPC分类号: G08B13/14
CPC分类号: H01Q1/2208 , H01Q1/52 , H01Q5/371 , H01Q9/0407
摘要: In one embodiment, a multi-band near-field antenna for an RFID encoder includes a substrate; an internal coil antenna defined within the substrate; an annular ground plane defined on a first surface of the substrate; a second ground plane defined on an opposing second surface of the substrate, wherein the annular ground plane and the second ground plane form a Faraday cage for the internal coil antenna; and a second antenna disposed on the opposing second surface within the annulus defined by the annular ground plane.
摘要翻译: 在一个实施例中,用于RFID编码器的多频带近场天线包括基板; 限定在所述基板内的内部线圈天线; 限定在所述基板的第一表面上的环形接地平面; 限定在所述基板的相对的第二表面上的第二接地平面,其中所述环形接地平面和所述第二接地平面形成用于所述内部线圈天线的法拉第笼; 以及设置在由环形接地平面限定的环形空间内的相对的第二表面上的第二天线。
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