Published in Hong, S. J., Yu, B., Harackiewicz, F. J., Park, M. J., Chung, Y. S., & Lee, B. (2008). Crab shaped antenna for RFID tag at UHF band. Antennas and Propagation Society International Symposium, 2008. AP-S 2008, 1 - 4. doi: 10.1109/APS.2008.4619848. ©2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.


A crab shaped tag antenna which has a better performance than conventional label type of tag antenna is proposed for UHF band RFID systems. The proposed antenna is a dipole with T-matching network, and parasitic loop is inserted to the T-matching network. The antenna is analyzed by simulator, Ansoft HFSS software, and the measured results based on backscattering method are presented.