TY - CONF AU - Daniel Kuester AU - David Novotny AU - Jeffrey Guerrieri AU - Randy Direen AU - Zoya Popovic C2 - 2011 IEEE International Conference on RFID, Orlando, FL DA - 2011-04-14 LA - en PB - 2011 IEEE International Conference on RFID, Orlando, FL PY - 2011 TI - Reference Modulation for Calibrated Measurements of Tag Backscatter ER -