Novel CPW-fed slot antenna for UHF RFID metal tag applications

IEICE Electronics Express

Hsien-Wen Liu¹  Chia-Hao Ku²  Pao-Jen Wang² 

[1] Department of Electrical Engineering, National Taiwan University of Science and Technology;Department of Electrical Engineering, Ming Chi University of Technology

关键词: RFID;    metal tag;    tag antenna;    maximum reading range;   

DOI  :  10.1587/elex.8.410

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(9)Cited-By(1)A novel planar CPW-fed passive tag antenna that may be mounted on a metallic object is presented to meet UHF radio frequency identification (RFID) applications. It comes with a slot radiator and an inverted-C shaped coupling structure, which is fabricated on a 0.4mm-thick FR4 substrate to be attached on a 3mm-thick polypropylene (PP) substrate. No additional matching circuit is required with our design, so a compact tag size of 93(L)×20(W)×3.4(H)mm3 can be obtained. With a proper operating bandwidth from 915 to 929MHz, the proposed tag can achieve maximum reading ranges of 7.4m and 4.7m when used with and without a metallic plate for 4W EIRP.

【 授权许可】

Unknown