A Compact CPW-Fed Ultra-WidebandMulti-Input-Multi-Output (MIMO) Antenna forWireless Communication Networks Articles uri icon

authors

publication date

  • March 2022

start page

  • 25278

end page

  • 25289

volume

  • 10

Electronic International Standard Serial Number (EISSN)

  • 2169-3536

abstract

  • In this article, a compact coplanar waveguide (CPW) technique based ultra-wideband multipleinput-
    multiple-output (MIMO) antenna is proposed. The design is characterized by a broad impedance
    bandwidth starting from 3 GHz to 11 GHz. The overall size of the MIMO design is 60 x 60 mm2
    (1.24 x 1.24 g2 g @ 3 GHz) with a thickness of 1.6 mm. To make the design ultra-wideband, the proposed
    MIMO antenna design has four jug-shaped radiating elements. The design is printed on a FR-4 substrate
    (relative permittivity of "r D 4:4 and loss tangent of tand D 0:025). The polarization diversity phenomenon
    is realized by placing four antenna elements orthogonally. This arrangement increases the isolation among
    the MIMO antenna elements. The simulated results of the ultra-wideband MIMO antenna are verified by
    measured results. The proposed MIMO antenna has a measured diversity gain greater than 9.98, envelope
    correlation coefficient (ECC) less than 0.02, and good MIMO performance where the isolation is more than
    -20dB between the elements. The group delay, channel capacity loss (CCL), and the total active reflection
    coefficient (TARC) multiplexing efsiciency and mean effective gain results are also analyzed. The group
    delay is found to be less than 1.2ns, CCL values calculated to be less than 0.4 bits/sec/Hz, while the TARC
    is below -10dB for the whole operating spectrum. The proposed design is a perfect candidate for ultrawideband
    wireless communication systems and portable devices.

keywords

  • multi-input-multi-output (mimo), ultra-wideband, envelope correlation coefcient (ecc); channel capacity loss (ccl), group delay, total active reection coefcient (tarc).