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Aperture-coupled UHF RFID reader antenna for a handheld application

✍ Scribed by DongHyun Lee; PilJun Park; JeongPyo Kim; JaeHoon Choi

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
275 KB
Volume
50
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

This article presents a new UHF RFID reader antenna for a handheld reader system. An aperture‐coupled structure is employed to cover the North American UHF RFID frequency band: 902–928 MHz. A thick high‐dielectric substrate with a relative permittivity of ε~r~ = 8 is used for the size reduction. The rectangular stubs on the proposed annular ring patch contribute to effective impedance matching and good axial ratio performance. The proposed antenna has a total volume of 100 mm × 100 mm × 9.6 mm and exhibits a maximum RHCP gain of 2.68 dBi and an average axial ratio of 1.1 dB for the application frequency band. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 1261–1263, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23349

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