Bandwidth and gain enhancement of microstrip patch antennas using reflective metasurface

Sarawuth Chaimool, Kwok L. Chung, Prayoot Akkaraekthalin

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    52 Citations (Scopus)

    Abstract

    Bandwidth and gain enhancement of microstrip patch antennas (MPAs) is proposed using reflective metasirface (RMS) as a superstrate. Two different types of the RMS, namely- the double split-ring resonator (DSR) and double closed-ring resonator (DCR) are separately investigated. The two antenna prototypes were manufactured, measured and compared. The experimental results confirm that the RMS loaded MPAs achieve high-gain as well as bandwidth improvement. The desinged antenna using the RMS as a superstrate has a high-gain of over 9.0 dBi and a wide impedance bandwidth of over 13%. The RMS is also utilized to achieve a thin antenna with a cavity height of 6 mm, which is equivalent to γ/21 at the center frequency of 2.45 GHz. At the same time, the cross polarization level and front-to-back ratio of these antennas are also examined.
    Original languageEnglish
    Pages (from-to)2496-2503
    Number of pages8
    JournalIEICE Transactions on Communications
    VolumeE93-B
    Issue number10
    Publication statusPublished - 2010

    Keywords

    • Fabry, Perot cavity
    • cavity resonators
    • microstrip antennas
    • microstrip devices
    • optical resonators

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