A study of the bends effects on a meandered dipole tag antenna

摘要

The goal of this communication is to present a comparison between three dipole folded passive ultra-high frequency (UHF) tag antennas: a common dipole meander and two others with respectively square and triangular additional bends. The results demonstrate that the modified tag structures are a good alternative for a significant size reduction and they ensure dual-band antenna functionality as well. All designed tag antennas maintain the radiation patterns characteristics of the dipole antenna but they have different impacts on reflection coefficient, bandwidth and gain. Ultimately, the preferred structure is the most appropriate for the application.