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A novel design of a microstrip-fed shorted square-ring slot antenna for circular polarization

✍ Scribed by Kow-Ming Chang; Ren-Jie Lin; I-Chung Deng; Qing-Xiang Ke

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
355 KB
Volume
49
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

The design of a circularly polarized slot antenna fed by a single microstrip line is presented. The circularly polarized radiation is achieved by means of using a shorted square‐ring slot. This proposed antenna has the fundamental resonant frequency of 2.4 GHz with the minimum return loss of −50.44 dB. The impedance bandwidth is 930 MHz or 38.7% referred to the resonant frequency, and it also has the 3‐dB axial‐ratio (AR) bandwidth of 310 MHz or 12.9% referred to the resonant frequency. In addition, this proposed antenna shows good performance of circular polarization (CP) radiation with the range of the lower 3‐dB AR value covering elevation angles between −40 to 40 degrees. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1684–1687 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22517

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