Miniaturized compound spiral slot antenna

This article introduces a miniaturized compound spiral slot antenna with a wideband balun and a back cavity. The simulated and experimental results show that the proposed antenna presents good circular polarization and wideband properties. Its measured return loss is less than −10 dB in the frequenc...

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Bibliographic Details
Published in:Microwave and optical technology letters 2008-11, Vol.50 (11), p.2799-2801
Main Authors: Yu-Xiao, Zhu, Shun-Shi, Zhong, Sai-Qing, Xu
Format: Article
Language:English
Subjects:
circular polarization
miniaturization
spiral slot antenna
super-wideband
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Summary:This article introduces a miniaturized compound spiral slot antenna with a wideband balun and a back cavity. The simulated and experimental results show that the proposed antenna presents good circular polarization and wideband properties. Its measured return loss is less than −10 dB in the frequency range 0.75 to 8 GHz (10.7:1) and the axial ratio is less than 3.5 dB in the range 0.95 to 8 GHz. Comparing with the conventional spiral antenna, the proposed antenna diameter is only one fourth of that of the former, therefore the antenna size is significantly reduced. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2799–2801, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23801
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.23801