Fabrication and Characterization of Flexible Polymer Iron Oxide Composite Substrate for the Imaging Antennas of Wearable Head Imaging Systems

Given the increased interest in wearable electromagnetic imaging systems, developing a low-cost, lightweight, flexible, and conformal customized substrate to accommodate the imaging antenna array is essential. The characterization and assessment of a custom-made composite substrate using a flexible...

Full description

Saved in:
Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2018-08, Vol.17 (8), p.1364-1368
Main Authors: Alqadami, Abdulrahman S. M., Mohammed, Beadaa, Bialkowski, Konstanty S., Abbosh, Amin
Format: Article
Language:English
Subjects:
Antenna arrays
Antennas
Conformal mapping
Dielectrics
Electromagnetic imaging
iron oxide
Iron oxides
Low cost
Magnetic multilayers
Magnetic resonance imaging
Magnetite
magneto-dielectric
material characterization
Microstrip transmission lines
Multilayers
Nonhomogeneous media
Permeability
Permittivity
poly-di-methyl-siloxane (PDMS)
Polydimethylsiloxane
Polymers
Silicone resins
Substrates
Transmission lines
Wearable technology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Given the increased interest in wearable electromagnetic imaging systems, developing a low-cost, lightweight, flexible, and conformal customized substrate to accommodate the imaging antenna array is essential. The characterization and assessment of a custom-made composite substrate using a flexible polymer poly-di-methyl-siloxane (PDMS) and magnetite iron oxide ({\text{FeO.Fe}}_{2}{\text{O}}_{3} ) for wearable head imaging systems is presented. Micro-scale {\text{FeO.Fe}}_{2}{\text{O}}_{3} particles are homogeneously combined with PDMS in different ratios to build the flexible engineered magneto-dielectric (MD) composite substrate. Besides the low cost, fabrication simplicity, and durability, the magnetite {\text{FeO.Fe}}_{2}{\text{O}}_{3} particles can be used to control the relative permittivity and permeability over a wide range of values to suit the proposed application. The permittivity, permeability, and losses of the developed substrate are extracted using a custom-made two-port multilayer microstrip transmission line test fixture with the help of conformal mapping algorithms. The characterization is performed across the microwave frequency range 1.2-4 GHz, which is widely adopted for head imaging. The extracted permittivity is successfully verified by using a Keysight 85070E dielectric slim probe kit.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2018.2841879