Design of a compact CPW‐fed UHF RFID tag antenna for metallic objects | Zendy

Um Youngman | Zendy; Kim Uisheon | Zendy; Choi Jaehoon | Zendy

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Design of a compact CPW‐fed UHF RFID tag antenna for metallic objects

Author(s) -

Um Youngman,

Kim Uisheon,

Choi Jaehoon

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.23378

Subject(s) - ultra high frequency , antenna (radio) , electrical engineering , microwave , planar , coaxial antenna , materials science , patch antenna , optoelectronics , microstrip antenna , optics , physics , engineering , telecommunications , computer science , computer graphics (images)

A compact CPW‐fed UHF RFID tag antenna for metallic objects is proposed. It is less sensitive to the size of metallic objects and has a low profile and a long reading distance. The antenna consists of shorting walls, CPW feed line, a tag IC, and a radiating patch with Ishaped slits. The overall dimensions of the antenna are 55 mm × 26 mm ×2.2 mm. The tag IC has an input impedance of 43 ‐ j800 Ω at 915 MHz. When the antenna is mounted on 200 mm × 200 mm, 400 mm × 400 mm, and 600 mm × 600 mm planar metallic plates, the maximum reading distances are 5.1, 5, and 4.5 m, respectively. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1439–1443, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23378

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