Deployable linear-to-circular polarizer using PDMS based on unloaded and loaded circular FSS arrays for pico-satellites

In this paper, flexible and deployable double-sided linear-to-circular polarizers designed on polydimethylsiloxane are proposed for the first time to the best of our knowledge. ShieldIt textile is used as the conducting element of the two designs based on two different unit cell arrays: a loaded cir...

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Main Authors:	Mirza, H., Hossain, T. M., Soh, Ping Jack, Jamlos, M. F., Ramli, M. N., Al-Hadi, A. A., Hassan, E. S., Yang, S.
Format:	Article
Language:	English
Published:	IEEE 2019
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/24743/ http://umpir.ump.edu.my/id/eprint/24743/ http://umpir.ump.edu.my/id/eprint/24743/ http://umpir.ump.edu.my/id/eprint/24743/1/Deployable%20Linear-to-Circular%20Polarizer%20Using%20PDMS%20Based.pdf

id	ump-24743
recordtype	eprints
spelling	ump-247432019-07-04T03:57:02Z http://umpir.ump.edu.my/id/eprint/24743/ Deployable linear-to-circular polarizer using PDMS based on unloaded and loaded circular FSS arrays for pico-satellites Mirza, H. Hossain, T. M. Soh, Ping Jack Jamlos, M. F. Ramli, M. N. Al-Hadi, A. A. Hassan, E. S. Yang, S. TJ Mechanical engineering and machinery In this paper, flexible and deployable double-sided linear-to-circular polarizers designed on polydimethylsiloxane are proposed for the first time to the best of our knowledge. ShieldIt textile is used as the conducting element of the two designs based on two different unit cell arrays: a loaded circular patch unit cell or an unloaded circular patch unit cell, both backed by a generic rectangular element on its reverse side. This is in contrast to conventional frequency-selective structure-based linear-to-circular polarizers implemented using rigid substrates, which are multi-layered and requires inter-layer physical spacing. This complicates their implementation using flexible substrates and in a deployable format. Upon implementation of this double-sided polarizer, their final performances are evaluated in terms of the phase difference, conversion efficiency, 3-dB axial ratio (AR), and ellipticity bandwidth (from 40° to 45°). Measurements indicated good agreements with simulations, and both structures exhibited more than 90% of conversion efficiency from 2.34 to 3 GHz (for the loaded circular unit cell) and from 2.36 to 3 GHz (for the unloaded circular unit cell). In terms of ellipticity, a bandwidth of 8.67% is observed for the unloaded design and 13.82% for the loaded design. The unloaded structure exhibited a fractional 3-dB AR bandwidth of 36.36% (from 1.98 to 2.86 GHz) in simulations, and 32.64 % (from 2.00 to 2.78 GHz) when evaluated experimentally. Conversely, the loaded design showed only 12.58%. An equivalent circuit model is proposed and validated via a comparison between the circuit and full-wave simulations. Finally, the performances of these polarizers are also assessed under different bending conditions due to the use of flexible materials, prior to the proposal of a suitable deployment mechanism. IEEE 2019-01-07 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/24743/1/Deployable%20Linear-to-Circular%20Polarizer%20Using%20PDMS%20Based.pdf Mirza, H. and Hossain, T. M. and Soh, Ping Jack and Jamlos, M. F. and Ramli, M. N. and Al-Hadi, A. A. and Hassan, E. S. and Yang, S. (2019) Deployable linear-to-circular polarizer using PDMS based on unloaded and loaded circular FSS arrays for pico-satellites. IEEE Access, 7. pp. 2034-2041. ISSN 2169-3536 https://doi.org/10.1109/ACCESS.2018.2885381 https://doi.org/10.1109/ACCESS.2018.2885381
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Mirza, H. Hossain, T. M. Soh, Ping Jack Jamlos, M. F. Ramli, M. N. Al-Hadi, A. A. Hassan, E. S. Yang, S. Deployable linear-to-circular polarizer using PDMS based on unloaded and loaded circular FSS arrays for pico-satellites
description	In this paper, flexible and deployable double-sided linear-to-circular polarizers designed on polydimethylsiloxane are proposed for the first time to the best of our knowledge. ShieldIt textile is used as the conducting element of the two designs based on two different unit cell arrays: a loaded circular patch unit cell or an unloaded circular patch unit cell, both backed by a generic rectangular element on its reverse side. This is in contrast to conventional frequency-selective structure-based linear-to-circular polarizers implemented using rigid substrates, which are multi-layered and requires inter-layer physical spacing. This complicates their implementation using flexible substrates and in a deployable format. Upon implementation of this double-sided polarizer, their final performances are evaluated in terms of the phase difference, conversion efficiency, 3-dB axial ratio (AR), and ellipticity bandwidth (from 40° to 45°). Measurements indicated good agreements with simulations, and both structures exhibited more than 90% of conversion efficiency from 2.34 to 3 GHz (for the loaded circular unit cell) and from 2.36 to 3 GHz (for the unloaded circular unit cell). In terms of ellipticity, a bandwidth of 8.67% is observed for the unloaded design and 13.82% for the loaded design. The unloaded structure exhibited a fractional 3-dB AR bandwidth of 36.36% (from 1.98 to 2.86 GHz) in simulations, and 32.64 % (from 2.00 to 2.78 GHz) when evaluated experimentally. Conversely, the loaded design showed only 12.58%. An equivalent circuit model is proposed and validated via a comparison between the circuit and full-wave simulations. Finally, the performances of these polarizers are also assessed under different bending conditions due to the use of flexible materials, prior to the proposal of a suitable deployment mechanism.
format	Article
author	Mirza, H. Hossain, T. M. Soh, Ping Jack Jamlos, M. F. Ramli, M. N. Al-Hadi, A. A. Hassan, E. S. Yang, S.
author_facet	Mirza, H. Hossain, T. M. Soh, Ping Jack Jamlos, M. F. Ramli, M. N. Al-Hadi, A. A. Hassan, E. S. Yang, S.
author_sort	Mirza, H.
title	Deployable linear-to-circular polarizer using PDMS based on unloaded and loaded circular FSS arrays for pico-satellites
title_short	Deployable linear-to-circular polarizer using PDMS based on unloaded and loaded circular FSS arrays for pico-satellites
title_full	Deployable linear-to-circular polarizer using PDMS based on unloaded and loaded circular FSS arrays for pico-satellites
title_fullStr	Deployable linear-to-circular polarizer using PDMS based on unloaded and loaded circular FSS arrays for pico-satellites
title_full_unstemmed	Deployable linear-to-circular polarizer using PDMS based on unloaded and loaded circular FSS arrays for pico-satellites
title_sort	deployable linear-to-circular polarizer using pdms based on unloaded and loaded circular fss arrays for pico-satellites
publisher	IEEE
publishDate	2019
url	http://umpir.ump.edu.my/id/eprint/24743/ http://umpir.ump.edu.my/id/eprint/24743/ http://umpir.ump.edu.my/id/eprint/24743/ http://umpir.ump.edu.my/id/eprint/24743/1/Deployable%20Linear-to-Circular%20Polarizer%20Using%20PDMS%20Based.pdf
first_indexed	2023-09-18T22:37:38Z
last_indexed	2023-09-18T22:37:38Z
_version_	1777416702004297728

Deployable linear-to-circular polarizer using PDMS based on unloaded and loaded circular FSS arrays for pico-satellites

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