SIGNAL LINE STRUCTURE FOR A RADIO-FREQUENCY IDENTIFICATION SYSTEM
摘要
<p>The invention provides one or more signal line structures that produce an electromagnetic field having a magnitude of at least an interrogation threshold of a radio frequency identification (RFID) tag for a substantial portion of an interrogation region. The signal lines may be made from copper and laid across a shelf in a storage area. The electromagnetic field may cause the tag to backscatter radio frequency (RF) signals to an RFID reader via the signal line.</p>
申请公布号
WO2009042533(A3)
申请公布日期
2009.05.28
申请号
WO2008US77160
申请日期
2008.09.22
申请人
3M INNOVATIVE PROPERTIES COMPANY
发明人
ERICKSON, DAVID P.;WALDNER, MICHELE A.;MCGEE, JAMES P.;BANERJEE, SWAGATA R.