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A novel isolation improvement technique using fractal neutralization line with dual band rejection attributes in a compact UWB MIMO antenna

Published online by Cambridge University Press:  02 December 2022

Jeet Banerjee ,
Abhik Gorai Open the ORCID record for Abhik Gorai [Opens in a new window]  and
Rowdra Ghatak
Jeet Banerjee
Affiliation:
Department of Electrical & Electronics Engineering, School of Engineering and Technology, Adamas University, Kolkata, West Bengal, India
Abhik Gorai*
Affiliation:
School of Electronics Engineering, KIIT Deemed University, Bhubaneswar, India
Rowdra Ghatak
Affiliation:
Microwave and Antenna Research Laboratory, ECE Department, National Institute of Technology Durgapur, Durgapur, West Bengal, India
*
Author for correspondence: Abhik Gorai, E-mail: abhik.gorai@gmail.com
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Abstract

A closely confined coplanar waveguide (CPW) fed MIMO antenna sheltering the entire ultra-wideband (UWB) spectrum with high isolation as well as dual-band rejection attributes is presented and evaluated. The intended wideband multiple-input multiple-output (MIMO) radiator embodies a pair of similar planar monopole elements (PME) together with the integration of the ingredients like a defected ground structure with Koch fractal boundaries, parasitic strips, cross-linked C-shaped parasitic resonators, and a Hilbert fractal neutralization line. The suggested UWB MIMO antenna houses an extensive bandwidth spanning between 2.64 and 12 GHz, sharply rejecting a pair of bands centered at 3.3 and 4.5 GHz. The wideband diversity antenna is realized in a closely packed measure of 26.50 mm (L) × 29.84 mm (W). A minute inter-element spacing of 0.51 mm is attained with the suggested layout. The numerical and experimental investigations of vital diversity parameters such as the envelope correlation coefficient, mean effective gain, total active reflection coefficient, as well as multiplexing efficiency depict high diversity performance. The consistency amidst the simulation as well as the empirical results recommends the worthiness of the intended antenna for handy UWB and UWB MIMO systems.

Keywords

Ultrawideband (UWB)Multiple input multiple output (MIMO)Envelope correlation coefficient (ECC)Total active reflection coefficient (TARC)Mean effective gain (MEG)Hilbert fractal neutralization line (HFNL)Defected ground structure (DGS)Planar monopole elements (PME)
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Special Issue 8: EuCAP 2022 Special Issue , October 2023 , pp. 1361 - 1372
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Copyright
© The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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