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Broadband circularly polarized printed-spiral-strip antenna for 5-GHz WLAN operation

✍ Scribed by Che-Wei Su; Yung-Tao Liu; Wen-Shyang Chen; Yuan-Tung Cheng; Kin-Lu Wong

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
89 KB
Volume
41
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

A novel broadband circularly polarized printed‐spiral‐strip antenna is presented. The antenna consists of a printed spiral strip of about 1.4 wavelengths in length wound into about one turn and mounted above a ground plane with a thick air layer. By using a 50Ω probe feed along with a long feeding strip and a coupled long‐shorting strip for exciting the printed spiral strip, good circular polarization (CP) radiation over a wide bandwidth (larger than 20%) is achieved, which makes the proposed antenna well suited for applications in the 5‐GHz WLAN band. Details of the proposed antenna design and the experimental results obtained for a constructed prototype are presented. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 41: 163–165, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20080

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