Phase Analysis of a Semi-Passive RFID Indoor Localization System

摘要

A full electromagnetic simulation model for a novel indoor localization system of a semi-passive radio frequency identification (RFID) tag is presented. The method is based on the phase of the backscattered wave collected by an antenna array attached to the RFID reader. Results demonstrate that the proposed simulation model comparatively provides an accurate estimation as well as assessment tool of phase measurements for indoor localization application. In addition, effects of the mutual coupling of the antenna array elements on the phase measurements found to be negligible due to the robustness of the proposed system.