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A small circularly polarized tag antenna on a high-dielectric substrate

✍ Scribed by Chihyun Cho; Seungbeom Ahn; Ikmo Park; Hosung Choo

Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
219 KB
Volume
53
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

The reading range of a tag antenna usually decreases markedly as the antenna size decreases, because of the antenna's reduced gain. This letter describes the use of circular polarization to reduce the size of a tag antenna without decreasing its reading range. This approach resulted in a 33 × 33‐mm antenna with a substrate thickness of 4 mm that maintained reading ranges of about 3 m for the antenna in free space and 7 m for the antenna on a metallic surface. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2423–2425, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26270

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