Angle-Based Chipless RFID Tag and Its Application

This paper presents a novel angle-based chipless RFID tag with high capacity. It encodes information with the angle between two arms of the V-shaped scatterer and is identified through measuring the two orthogonal scattering field. The advantage of this type of tag is that every unit can encode multi-bits information. Also, for different codes of one unit, the proposed tag ocupies the same spectrum. This is helpful to improve the spectrum efficiency. Finally, the tag is used to design the resistive transducer.