A Novel Passive Chipless RFID Tag for Angle Sensor

摘要

A passive chipless RFID tag working as an angle sensor is presented. The proposed tag consists of a circle patch loaded with multiple slot resonators. The angle which the designed tag rotates is identified via measuring the scattered electric field in vertical polarization direction of I-shaped slot resonator. This is more convenient comparing with dual polarization, avoiding the use of complex measurement network. The proposed tag operates at the band of 5.6-11.6 GHz and its encoding capacity is 8 bits within an area of 2.01 cm². The identification errors are no more than 5° in the simulated results.