An object location system and method is provided for locating objects. The
system includes an RFID reader, an angle calculator, and a distance
calculator to determine which of a plurality of zones an object is
located in or passing through. An RFID tag is affixed with the object
that is to be located. The RFID reader transmits signals to the RFID tag
and receives backscatter-modulated signals from the RFID tag at one or
more RFID antennas. From those received signals, the angle calculator
determines an angle of position of the RFID tag relative to the RFID
antenna. From the angle of position the zone in which the object is
located is determined.