A T-junction power divider FED circularly polarized cavity backed slot antenna

Authors

  • Guo Qing Luo,

    Corresponding author
    1. Key Laboratory of RF Circuits and System of Ministry of Education, Microelectronic CAD Center, Hangzhou Dianzi University, Xiasha High Education Park, Hangzhou, 310018, People's Republic of China
    • Key Laboratory of RF Circuits and System of Ministry of Education, Microelectronic CAD Center, Hangzhou Dianzi University, Xiasha High Education Park, Hangzhou, 310018, People's Republic of China
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  • Zhi Fang Hu,

    1. Key Laboratory of RF Circuits and System of Ministry of Education, Microelectronic CAD Center, Hangzhou Dianzi University, Xiasha High Education Park, Hangzhou, 310018, People's Republic of China
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  • Xiao Hong Zhang,

    1. Key Laboratory of RF Circuits and System of Ministry of Education, Microelectronic CAD Center, Hangzhou Dianzi University, Xiasha High Education Park, Hangzhou, 310018, People's Republic of China
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  • Lin Xi Dong,

    1. Key Laboratory of RF Circuits and System of Ministry of Education, Microelectronic CAD Center, Hangzhou Dianzi University, Xiasha High Education Park, Hangzhou, 310018, People's Republic of China
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  • Ling Ling Sun

    1. Key Laboratory of RF Circuits and System of Ministry of Education, Microelectronic CAD Center, Hangzhou Dianzi University, Xiasha High Education Park, Hangzhou, 310018, People's Republic of China
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Abstract

A circularly polarized antenna realized by a power divider fed cavity backed slot antenna is presented in this article.The cavity backed slot antenna is constructed on a single layer substrate by using substrate integrated waveguide (SIW) technique. A T-junction power divider with equal magnitude and 90° phase difference outputs is adopted as the parallel feed to excite the SIW backed cavity. Circularly polarized radiation can be generated when two orthogonal cavity modes are excited simultaneously in the backed cavity. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:107–109, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26482

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