A study on the accuracy of location measurement of wireless ID tags integrated with multiple antennas and an antenna direction sensor

Location information of mobile terminals has become more important in relation to the achievements of the ubiquitous network, and studies of location measurement using wireless ID tag systems are attracting attention. Wireless ID tag systems are used for location measurement, and these systems usually have one antenna inside a wireless ID tag. However, the accuracy of these systems could be affected by the direction of the tags. Therefore, this study proposes a wireless ID tag integrated with multiple antennas and an antenna direction sensor in order to improve the accuracy of the system and examines the accuracy of the proposed wireless ID tag by basic experiments.