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High gain multi-band circularly polarized wearable leaky wave zipper MIMO antenna

Saeidi T 1 , Saleh S 1 , Mahmood SN 2 , Timmons N 1 , Al-Gburi AJA 3 , Karamzadeh S 4 Show all authors , Razzaz F 5

Affiliations 

  • 1 WiSAR Lab, Atlantic Technological University (ATU), Letterkenny, Co. Donegal, F92 FC93, Ireland
  • 2 Electronic and Control Engineering Techniques, Technical Engineering College, Northern Technical University, Kirkuk, Iraq
  • 3 Center for Telecommunication Research & Innovation (CeTRI), Fakulti Teknologi Kejuruteraan Elektrikal dan Elektronik (FTKEE), Universiti Teknikal Malaysia Melaka (UTeM), Malacca, 76100, Malaysia
  • 4 Millimeter Wave Technologies, Intelligent Wireless System, Silicon Austria Labs (SAL), 4040, Linz, Austria
  • 5 Electrical Engineering Department, College of Engineering, Prince Sattam Bin Abdulaziz University, Al-Kharj, 16278, Saudi Arabia
Heliyon, 2024 Jun 30;10(12):e33024.
PMID: 38994104 DOI: 10.1016/j.heliyon.2024.e33024

Abstract

A miniaturized, multi-band, four-port wearable Multiple Input Multiple Output (MIMO) antenna is proposed, which contains a leaky wave textile antenna (LWTA) on denim (εr = 1.6, tanδ = 0.006) as substrate and Shieldit Super Fabric as conductor textile. The concept in this work involves incorporating the metal and plastic zipper into the garment to function as an antenna worn on the body. Simulations and measurements have been conducted to explore this idea. The LWTA has dimensions of 40 × 30 × 1 mm³. Every two ports are separated by a zipper with two different kinds of materials: Acetal Polymer Plastic (APP) and 90 % brass to improve the isolation, gain, and Impedance bandwidth. The antenna operates in the frequency ranges covering the L, C, S, and X bands. Additionally, diversity performance is evaluated using the Envelope Correlation Coefficient (ECC) and diversity gain (DG). Simulation and measurement findings agree well, with a maximum gain of 12.15 dBi, low Specific Absorption Rate (SAR) based on the standards, DG greater than 9.65 dB, circular polarization (CP), and strong isolation (

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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