Wirelessly testing an RFID tag before it is packaged or otherwise entered into a process reserved for “working” RFID tags is described. Various processes that employ such wireless testing as well as various “on-die” RFID tag antenna designs for facilitating the wireless testing are also desc...http://www.google.com.hk/patents/US7400255?utm_source=gb-gplus-share專利 US7400255 - Wireless functional testing of RFID tag
