A Four-Element Planar UWB-MIMO Antenna System Comprising of Plus-Sign Stub for High Isolation
Swati Gautam1, Kanchan Cecil2
1Swati Gautam, Research Scholar, Department of Electronics and Communication, Jabalpur Engineering College, Jabalpur (M.P), India.
2Kanchan Cecil, Assistant Professor, Department of Electronics and Communication, Jabalpur Engineering College, Jabalpur (M.P), India.
Manuscript received on 18 June 2018 | Revised Manuscript received on 27 June 2018 | Manuscript published on 30 June 2018 | PP: 17-20 | Volume-7 Issue-5, June 2018 | Retrieval Number: E5385067518/18©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: A four-element planar UWB-MIMO antenna system with plus-sign stub (for achieving high isolation) is proposed here. The complete antenna system is constructed on 52mm x 52mm, FR-4 substrate (dielectric constant=4.3). The structure consists of 4 identical antenna elements, with each element placed orthogonal to its adjacent element on the top of the substrate. The partial ground plane with circular slots is utilized on the back of the substrate. The antenna is simulated using CST Microwave Studio. Simulated S11<-10dB, in the entire operating band (2.9 -12.9 GHz) and the isolation among the elements is observed to be less than -20 dB in most of the band. Maximum gain of 4.82dB is observed at center frequency (7.9 GHz). VSWR<2 is present throughout the band. The impedance bandwidth of 126.58% shows its candidature for many wireless UWB communication applications.
Keywords: Four-Element UWB-MIMO Antenna, Orthogonal, Plus-sign Stub, High Isolation.
Scope of the Article: Smart Antenna