A Novel Chipless RFID Tag Based on Backscattering Principle

Abstract

The chipless radio frequency identification (RFID) technology represents a new direction of development for RFID technology, but there are still many deficiencies in this technology currently. The distinct problem is the lack of strong capability of carrying information and the large size of tag. In this paper, a new structure for the chipless RFID tag is proposed based on the backscattering principle of electromagnetic (EM) wave. It is a C-shaped defect ring nested structure which does not increase the size of tag while can expand the coding capacity. The new structure equivalently has a multi-signal processing capability and can independently send and receive signals with coded information. The performance of the new structure is verified by simulation and measurement.