The invention discloses a positioning device using a
phased array principle and in combination with RSSI (Received
Signal Strength Indicator) range measuring, and relates to the technical field of ultrahigh
radio frequency identification, in particular to the positioning device using the
phased array principle and in combination with the RSSI range measuring. The positioning device using the
phased array principle and in combination with the RSSI range measuring comprises a reader, a passive electronic tag and a group of array antennas, wherein the passive electronic tag corresponds to the reader; and the reader comprises a digital
baseband circuit, a transmitting end and a receiving end. In the device, the
direction angle of the reader and the tag to be positioned is mainly determined through a phased array antenna, the
field strength value reflected by the tag read by the reader is then utilized to map the distance between the reader and the tag, and the position of the electronic tag can be obtained through operation of an
algorithm. The device can be used for tracking and positioning a target at an open place or in an indoor environment. Since the phased array antenna is introduced, the
radiation distance can be increased while the
antenna gain is increased; meanwhile, the range of
radiation is also expanded. The positioning device has the advantages of simple
system and large positioning range.