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Simple Reconfigurable Circularly Polarized Antenna at Three Bands

In this paper, a simple design for a triple-band circularly polarized (CP) antenna with the capability of switching its polarization between dual-sense CPs is presented. The proposed antenna is comprised of a monopole loop antenna as a primary radiator. By placing a parasitic loop around the primary...

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Autores principales: Le, Tu Tuan, Park, Han-Young, Yun, Tae-Yeoul
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6566272/
https://www.ncbi.nlm.nih.gov/pubmed/31137501
http://dx.doi.org/10.3390/s19102316
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author Le, Tu Tuan
Park, Han-Young
Yun, Tae-Yeoul
author_facet Le, Tu Tuan
Park, Han-Young
Yun, Tae-Yeoul
author_sort Le, Tu Tuan
collection PubMed
description In this paper, a simple design for a triple-band circularly polarized (CP) antenna with the capability of switching its polarization between dual-sense CPs is presented. The proposed antenna is comprised of a monopole loop antenna as a primary radiator. By placing a parasitic loop around the primary radiator, an additional CP band is achieved. Reconfigurability of the polarization between right-hand CP (RHCP) and left-hand CP (LHCP) at three different frequencies of 2.5, 3.3, and 3.8 GHz was realized by controlling the ON/OFF states of two PIN diodes. For validation, the fabricated antenna yielded an impedance bandwidth of 52.6% (2.34–4.01 GHz), while the axial ratio bandwidths for both the RHCP and LHCP states were 3.5% (2.47–2.56 GHz), 6.6% (3.20–3.42 GHz), and 2.4% (3.74–3.83 GHz). The measured broadside gains within the axial ratio bandwidth were 1.2, 2.7, and 1.4 dBi, respectively. Compared to other reconfigurable multi-band CP antennas, the proposed design is the first work to achieve a reconfigurable polarization at three distinct bands at a low fabrication cost by using only two diodes. The proposed antenna is suitable for WLAN and WiMAX applications.
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spelling pubmed-65662722019-06-17 Simple Reconfigurable Circularly Polarized Antenna at Three Bands Le, Tu Tuan Park, Han-Young Yun, Tae-Yeoul Sensors (Basel) Article In this paper, a simple design for a triple-band circularly polarized (CP) antenna with the capability of switching its polarization between dual-sense CPs is presented. The proposed antenna is comprised of a monopole loop antenna as a primary radiator. By placing a parasitic loop around the primary radiator, an additional CP band is achieved. Reconfigurability of the polarization between right-hand CP (RHCP) and left-hand CP (LHCP) at three different frequencies of 2.5, 3.3, and 3.8 GHz was realized by controlling the ON/OFF states of two PIN diodes. For validation, the fabricated antenna yielded an impedance bandwidth of 52.6% (2.34–4.01 GHz), while the axial ratio bandwidths for both the RHCP and LHCP states were 3.5% (2.47–2.56 GHz), 6.6% (3.20–3.42 GHz), and 2.4% (3.74–3.83 GHz). The measured broadside gains within the axial ratio bandwidth were 1.2, 2.7, and 1.4 dBi, respectively. Compared to other reconfigurable multi-band CP antennas, the proposed design is the first work to achieve a reconfigurable polarization at three distinct bands at a low fabrication cost by using only two diodes. The proposed antenna is suitable for WLAN and WiMAX applications. MDPI 2019-05-20 /pmc/articles/PMC6566272/ /pubmed/31137501 http://dx.doi.org/10.3390/s19102316 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Le, Tu Tuan
Park, Han-Young
Yun, Tae-Yeoul
Simple Reconfigurable Circularly Polarized Antenna at Three Bands
title Simple Reconfigurable Circularly Polarized Antenna at Three Bands
title_full Simple Reconfigurable Circularly Polarized Antenna at Three Bands
title_fullStr Simple Reconfigurable Circularly Polarized Antenna at Three Bands
title_full_unstemmed Simple Reconfigurable Circularly Polarized Antenna at Three Bands
title_short Simple Reconfigurable Circularly Polarized Antenna at Three Bands
title_sort simple reconfigurable circularly polarized antenna at three bands
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6566272/
https://www.ncbi.nlm.nih.gov/pubmed/31137501
http://dx.doi.org/10.3390/s19102316
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