发明授权
- 专利标题： Multi-band RFID encoder
- 专利标题（中）： 多频RFID编码器
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申请号： US11340234申请日： 2006-01-26
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公开(公告)号： US07342499B2公开(公告)日： 2008-03-11
- 发明人: Lihu M. Chiu , Hai Cao , John Kinley
- 申请人： Lihu M. Chiu , Hai Cao , John Kinley
- 申请人地址： US CA Irvine
- 专利权人： Printronix, Inc.
- 当前专利权人： Printronix, Inc.
- 当前专利权人地址： US CA Irvine
- 代理机构： MacPherson Kwok Chen & Heid LLP
- 代理商 Jonathan W. Hallman
- 主分类号： G08B13/14
- IPC分类号： G08B13/14
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.
公开/授权文献
- US20070171071A1 Multi-band RFID encoder 公开/授权日：2007-07-26
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