A small RFID tag antenna using proximity‐coupling to identify metallic objects | Zendy

Choi Wonkyu | Zendy; Kim Jungsuk | Zendy; Bae JiHoon | Zendy; Choi Gilyoung | Zendy

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A small RFID tag antenna using proximity‐coupling to identify metallic objects

Author(s) -

Choi Wonkyu,

Kim Jungsuk,

Bae JiHoon,

Choi Gilyoung

Publication year - 2008

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.23831

Subject(s) - microstrip antenna , antenna measurement , electrical engineering , antenna efficiency , patch antenna , return loss , antenna (radio) , impedance matching , microwave , coaxial antenna , antenna tuner , ultra high frequency , antenna factor , electronic engineering , engineering , telecommunications , electrical impedance

This article presents the design of a small‐ and low‐profile radio frequency identification tag antenna in the UHF band that can be stuck to metallic objects. The designed tag antenna, which uses a ceramic material as an antenna substrate, consists of a radiating patch and microstrip lines for a proximity‐coupled feeding structure. Impedance matching can be simply obtained between the antenna and tag chip without any matching network using the antenna structure. The return‐loss bandwidth for S 11 < 10 dB and radiation efficiency are about 9.5 MHz and 40% at 911 MHz, respectively. The read range is approximately from 3 to 3.5 m when the tag antenna is mounted on a metallic surface. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2978–2981, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23831

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