A Low Profile Switchable Pattern Directivity Antenna Using Circular Sectorized EBG

M.S. M.Isa, R.J Langley, S. Khamas, A. Awang Md Isa, M.S.I M.Zain, Z. Zakaria, N.Z Haron, A. Ahmad

Abstract


In this paper, a low profile patch antenna switchable radiation pattern diversity with total thickness of less than λ 0 /14 has been established.. The novel antenna structure is based on a conformal patch antenna operating in TM01 mode is integrated over an electromagnetic band gap (EBG) surface to provide a beam scanning antenna. The circular EBG elements are arranged in 6-sectors and the vias on each sector of the EBG are switched in and out to steer the beam into that sectors. The reflection coefficients for the antenna when the vias are switched remain stable. The simulation and experimentation results have shown that the antenna power pattern directed toward the sector, without via or the middle of sectors, without via. Overall a flexible low profile beam steering antenna is demonstrated. The antenna is designed for wireless network application especially to improve the system performance in multipath propagation environment. Furthermore, the low profile antenna makes it suitable to be used in vehicular application

Keywords


EBG; Pattern Directive; low profile; beam scanning; vehicular application

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ISSN: 2180-1843

eISSN: 2289-8131