公开(公告)号：US07417599B2

公开(公告)日：2008-08-26

申请号：US10784124

申请日：2004-02-20

申请人： Edward D. Goff ,  Seth A. Lieffort ,  Leroy Stolberg

发明人： Edward D. Goff ,  Seth A. Lieffort ,  Leroy Stolberg

IPC分类号： H01Q21/00

CPC分类号： H01Q1/22 ,  B82Y20/00 ,  G02B6/1225 ,  G06K7/10178 ,  G06K7/10336 ,  G06K7/10346 ,  H01Q1/2216 ,  H01Q1/38 ,  H01Q7/00 ,  H01Q21/29

摘要： A multi-loop antenna is described having a plurality of conductive loops to produce an electromagnetic field for radio frequency identification (RFID) communication with RFID tags. The conductive loops are spaced apart at least a distance that is selected based on a dimension of the RFID tags with which the antenna communicates. In this manner, the loops are positioned and spaced in a manner that reduces the size of the holes within the resulting magnetic field. In addition, the configuration of the described dual-loop antenna increases the coverage of the antenna, and decreases inter-winding capacitance, thereby increasing overall read range achieved by the antenna.

摘要翻译： 描述了具有多个导电回路以产生用于与RFID标签的射频识别（RFID）通信的电磁场的多回路天线。 导电环路间隔开至少一个基于天线通信的RFID标签的尺寸来选择的距离。 以这种方式，以减小所得磁场内的孔的尺寸的方式定位和间隔环。 此外，所描述的双环天线的配置增加了天线的覆盖范围，并且减小了绕组间电容，从而增加了由天线实现的总体读取范围。