Single-feed circularly polarized microstrip patch antenna stacked with periodic structure

Authors

  • Sarawuth Chaimool,

    Corresponding author
    1. Department of Electrical Engineering, King Mongkut's University of Technology North Bangkok, 1518 Pibulsongkram Rd.Bangkok, Thailand
    • Department of Electrical Engineering, King Mongkut's University of Technology North Bangkok, 1518 Pibulsongkram Rd. Bangkok, Thailand
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  • Chawalit Rakluea,

    1. Department of Electrical Engineering, King Mongkut's University of Technology North Bangkok, 1518 Pibulsongkram Rd.Bangkok, Thailand
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  • Kwok L. Chung,

    1. Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong
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  • Prayoot Akkaraekthalin

    1. Department of Electrical Engineering, King Mongkut's University of Technology North Bangkok, 1518 Pibulsongkram Rd.Bangkok, Thailand
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Abstract

A single-feed circularly polarized microstrip patch antenna by using a stacked periodic structure (SPS) is proposed and investigated. By using SPS as a superstrate with a single-feed microstrip patch antenna, gain, impedance and axial ratio bandwidths are significantly improved. It is also shown that this SPS has lower cross-polarization levels compared to conventional stacked patches. It uses low-cost FR-4 and air substrates and, hence, it is attractive for applications where the production cost is of importance. Moreover, a parametric study has been carried out to investigate the effects caused by SPS. Both experimental and theoretical results of the antenna have been presented and discussed. Good agreement between measured and simulated results is obtained. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:50-54, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26495

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