Metamaterial inspired electromagnetic bandgap filter for ultra-wide stopband screening devices of electromagnetic interference Articles uri icon

authors

  • Al Hasan, Muath
  • ALIBAKHSHIKENARI, MOHAMMAD
  • Virdee, Bal S.
  • Sharma, Richa
  • Iqbal, Amjad
  • Althuwayb, Ayman A.
  • Falcone, Francisco

publication date

  • December 2023

start page

  • 1

end page

  • 9

issue

  • 1

volume

  • 13

International Standard Serial Number (ISSN)

  • 2045-2322

abstract

  • Presented here is a reactively loaded microstrip transmission line that exhibit an ultra-wide
    bandgap. The reactive loading is periodically distributed along the transmission line, which is
    electromagnetically coupled. The reactive load consists of a circular shaped patch which is converted
    to a metamaterial structure by embedded on it two concentric slit-rings. The patch is connected to
    the ground plane with a via-hole. The resulting structure exhibits electromagnetic bandgap (EBG)
    properties. The size and gap between the slit-rings dictate the magnitude of the reactive loading.
    The structure was frst theoretically modelled to gain insight of the characterizing parameters. The
    equivalent circuit was verifed using a full-wave 3D electromagnetic (EM) solver. The measured results
    show the proposed EBG structure has a highly sharp 3-dB skirt and a very wide bandgap, which is
    substantially larger than any EBG structure reported to date. The bandgap rejection of the single
    EBG unit-cell is better than − 30 dB, and the fve element EBG unit-cell is better than − 90 dB. The
    innovation can be used in various applications such as biomedical applications that are requiring sharp
    roll-of rates and high stopband rejection thus enabling efcient use of the EM spectrum. This can
    reduce guard band and thereby increase the channel capacity of wireless systems.

subjects

  • Telecommunications