Bandwidth Optimization of a Textile PIFA with DGS Using Characteristic Mode Analysis

This work presents the design and optimization of an antenna with defected ground structure (DGS) using characteristic mode analysis (CMA) to enhance bandwidth. This DGS is integrated with a rectangular patch with circular meandered rings (RPCMR) in a wearable format fully using textiles for wireles...

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Bibliographic Details
Published in:Sensors (Basel, Switzerland) Switzerland), 2021-04, Vol.21 (7), p.2516
Main Authors: Elias, Bashar Bahaa Qas, Soh, Ping Jack, Al-Hadi, Azremi Abdullah, Akkaraekthalin, Prayoot, Vandenbosch, Guy A E
Format: Article
Language:English
Subjects:
Antennas
Bandwidths
characteristic mode analysis
Communication
defected ground structure
Design optimization
Efficiency
Flexibility
Method of moments
Optimization
planar antennas
Radiation
Simulation
Textiles
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Summary:This work presents the design and optimization of an antenna with defected ground structure (DGS) using characteristic mode analysis (CMA) to enhance bandwidth. This DGS is integrated with a rectangular patch with circular meandered rings (RPCMR) in a wearable format fully using textiles for wireless body area network (WBAN) application. For this integration process, both CMA and the method of moments (MoM) were applied using the same electromagnetic simulation software. This work characterizes and estimates the final shape and dimensions of the DGS using the CMA method, aimed at enhancing antenna bandwidth. The optimization of the dimensions and shape of the DGS is simplified, as the influence of the substrates and excitation is first excluded. This optimizes the required time and resources in the design process, in contrast to the conventional optimization approaches made using full wave "trial and error" simulations on a complete antenna structure. To validate the performance of the antenna on the body, the specific absorption rate is studied. Simulated and measured results indicate that the proposed antenna meets the requirements of wideband on-body operation.
ISSN:1424-8220
1424-8220
DOI:10.3390/s21072516