Statistical study of the matching properties of high density randomly distributed dipoles

UHF RFID (Radio Frequency IDentification) technologies have a long established role for tracking and identification of objects and persons. In some applications the density of RFID tags is high, this can give rise to an important electromagnetic coupling between tag antennas which modifies antenna's key parameters, i.e., matching properties and radiation pattern. These electromagnetic modifications can alter the communication links between devices and thus degrade the read rate or the read range of an RFID system. The mutual coupling between RFID tags has been investigated in literature [1], however the statistical modelling of the impact of the mutual coupling for high densities of RFID tags is still a new topic [2].