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Author: search.filters.author.Krairiksh, MonaiSubject: search.filters.subject.pattern reconfigurable antenna

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    A Sum-Difference Pattern Reconfigurable Antenna for Narrow Down Beamwidth of the Subtracted Pattern
    (2019-09-01)
    Dao, Hoang Nam
    ;
    Krairiksh, Monai
    In this paper, a pattern reconfigurable antenna which can be switched between sum and difference (SUM and DIF) beams in E-plane is proposed. Based on the beam switching, a narrow radiation pattern antenna is achieved by subtracting the DIF pattern from the SUM one. With a compact size and simple design, this proposed antenna provides 6.5° narrower beamwidth than that of the SUM beam. It is useful for eliminating unwanted object in short range radar (SRR) applications.
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    Pattern reconfigurable printed Yagi-Uda antenna
    (2015-01-28)
    Kittiyanpunya, Chainarong
    ;
    Krairiksh, Monai
    This paper presents a pattern reconfigurable antenna which is based on Yagi-Uda dipole antenna. The antenna can operate at ISM band of 2.45 GHz. It consists of microstrip-to-coplanar stripline (CPS) transition, driven elements and parasitic elements. The switch of driven element can be controlled by using PIN diodes while parasitic element function can be either reflector or director with different PIN diode states. The maximum of radiation patterns are in azimuth plane with four directions around the antenna to the directions of O = 40°, 120°, 220° and 320°.