Research Output

Isolation Enhancement of Densely Packed Array Antennas with Periodic MTM-Photonic Bandgap for SAR and MIMO Systems

  A metamaterial photonic bandgap (MTM-PBG) periodic structure is used as a decoupling frame to improve the
isolation between transmit–receive (T/R) sections of densely packed array antenna in synthetic aperture radar (SAR) and
multiple-input multiple-output (MIMO) systems. With this technique the MTM-PBG structure is shown to effectively suppress
surface wave propagations between the T/R array antennas by an average of 12 dB. MTM-PBG layer comprises a periodic
arrangement of dielectric circles etched in the cross-shaped microstrip frame that is inserted between the radiating elements.
Unlike other recently reported methods, the advantages of the proposed technique are: (i) simplicity; (ii) cost effectiveness as
there is no need for short-circuited via-holes or 3D metal walls; and (iii) can be retrofitted in existing array antennas. The
proposed T/R array antennas were designed to operate over an arbitrary frequency range (9.25-11 GHz) with a fractional
bandwidth (FBW) of 17.28%. With this technique (i) the side-lobes are reduced; (ii) there is minimal effect on the gain
performance; and (iii) the minimum edge-to-edge gap between adjacent radiating elements can be reduced to 0.15 at 9.25
GHz

  • Type:

    Article

  • Date:

    05 March 2019

  • Publication Status:

    In Press

  • DOI:

    10.1049/iet-map.2018.5747

  • Library of Congress:

    TK Electrical engineering. Electronics Nuclear engineering

  • Dewey Decimal Classification:

    621.382 Communications engineering

  • Funders:

    Edinburgh Napier Funded

Citation

Alibakhshikenari, M., Virdee, B. S., Ojaroudi Parchin, N., Khalily, M., Shukla, P., Quazzane, K., …Limiti, E. (in press). Isolation Enhancement of Densely Packed Array Antennas with Periodic MTM-Photonic Bandgap for SAR and MIMO Systems. IET Microwaves, Antennas and Propagation, https://doi.org/10.1049/iet-map.2018.5747

Authors

Keywords

Metamaterial (MTM), photonic bandgap (PBG), periodic structures, surface wave suppression, isolation, synthetic aperture radar (SAR), multiple-input multiple-output (MIMO)

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