Novel wideband circularly polarized DRA with squint-free radiation characteristics

Abstract A new single-fed circularly polarized dielectric resonator antenna (CP-DRA) without beam squint is presented. The DRA comprises an S-shaped dielectric resonator (SDR) with a metalized edge and two rectangular dielectric resonators (RDRs) blocks. Horizontal extension section is applied as an...

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Autores principales:	Mohammad Abedian, Mohsen Khalily, Vikrant Singh, Pei Xiao, Rahim Tafazolli, Ahmed A. Kishk
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f2bbe7f9a1c448d28af4985a4a089f49
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spelling	oai:doaj.org-article:f2bbe7f9a1c448d28af4985a4a089f492021-12-02T14:23:23ZNovel wideband circularly polarized DRA with squint-free radiation characteristics10.1038/s41598-021-86381-12045-2322https://doaj.org/article/f2bbe7f9a1c448d28af4985a4a089f492021-03-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-86381-1https://doaj.org/toc/2045-2322Abstract A new single-fed circularly polarized dielectric resonator antenna (CP-DRA) without beam squint is presented. The DRA comprises an S-shaped dielectric resonator (SDR) with a metalized edge and two rectangular dielectric resonators (RDRs) blocks. Horizontal extension section is applied as an extension of the SDR, and a vertical-section is placed in parallel to the metallic edge. A vertical coaxial probe is used to excite the SDR and the vertical RDR blocks through an S-shaped metal element and a small rectangular metal strip. The two added RDRs that form an L-shaped DR improve the radiation characteristics and compensate for the beam squint errors. A wideband CP performance is achieved due to the excitation of several orthogonal modes such as $$TE_{\delta 11}^x$$ T E δ 11 x , $$TE_{1\delta 1}^y$$ T E 1 δ 1 y , $$TE_{121}^z$$ T E 121 z , $$TE_{112}^y$$ T E 112 y , $$TE_{131}^x$$ T E 131 x , and $$TE_{311}^y$$ T E 311 y . The experimental results demonstrate an impedance bandwidth of approximately $$66.8\%$$ 66.8 % (3.71–7.45 GHz) and a 3-dB axial-ratio (AR) bandwidth of about $$54.8\%$$ 54.8 % (3.72–6.53 GHz) with a stable broadside beam achieving a measured peak gain of about $$4.64 \, {\text{dBic}}$$ 4.64 dBic . Furthermore, a 100% correction in beam squint value from $$\theta = 41^\circ$$ θ = 41 ∘ to $$\theta = 0^\circ$$ θ = 0 ∘ with respect to the antenna boresight is achieved.Mohammad AbedianMohsen KhalilyVikrant SinghPei XiaoRahim TafazolliAhmed A. KishkNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Mohammad Abedian Mohsen Khalily Vikrant Singh Pei Xiao Rahim Tafazolli Ahmed A. Kishk Novel wideband circularly polarized DRA with squint-free radiation characteristics
description	Abstract A new single-fed circularly polarized dielectric resonator antenna (CP-DRA) without beam squint is presented. The DRA comprises an S-shaped dielectric resonator (SDR) with a metalized edge and two rectangular dielectric resonators (RDRs) blocks. Horizontal extension section is applied as an extension of the SDR, and a vertical-section is placed in parallel to the metallic edge. A vertical coaxial probe is used to excite the SDR and the vertical RDR blocks through an S-shaped metal element and a small rectangular metal strip. The two added RDRs that form an L-shaped DR improve the radiation characteristics and compensate for the beam squint errors. A wideband CP performance is achieved due to the excitation of several orthogonal modes such as $$TE_{\delta 11}^x$$ T E δ 11 x , $$TE_{1\delta 1}^y$$ T E 1 δ 1 y , $$TE_{121}^z$$ T E 121 z , $$TE_{112}^y$$ T E 112 y , $$TE_{131}^x$$ T E 131 x , and $$TE_{311}^y$$ T E 311 y . The experimental results demonstrate an impedance bandwidth of approximately $$66.8\%$$ 66.8 % (3.71–7.45 GHz) and a 3-dB axial-ratio (AR) bandwidth of about $$54.8\%$$ 54.8 % (3.72–6.53 GHz) with a stable broadside beam achieving a measured peak gain of about $$4.64 \, {\text{dBic}}$$ 4.64 dBic . Furthermore, a 100% correction in beam squint value from $$\theta = 41^\circ$$ θ = 41 ∘ to $$\theta = 0^\circ$$ θ = 0 ∘ with respect to the antenna boresight is achieved.
format	article
author	Mohammad Abedian Mohsen Khalily Vikrant Singh Pei Xiao Rahim Tafazolli Ahmed A. Kishk
author_facet	Mohammad Abedian Mohsen Khalily Vikrant Singh Pei Xiao Rahim Tafazolli Ahmed A. Kishk
author_sort	Mohammad Abedian
title	Novel wideband circularly polarized DRA with squint-free radiation characteristics
title_short	Novel wideband circularly polarized DRA with squint-free radiation characteristics
title_full	Novel wideband circularly polarized DRA with squint-free radiation characteristics
title_fullStr	Novel wideband circularly polarized DRA with squint-free radiation characteristics
title_full_unstemmed	Novel wideband circularly polarized DRA with squint-free radiation characteristics
title_sort	novel wideband circularly polarized dra with squint-free radiation characteristics
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/f2bbe7f9a1c448d28af4985a4a089f49
work_keys_str_mv	AT mohammadabedian novelwidebandcircularlypolarizeddrawithsquintfreeradiationcharacteristics AT mohsenkhalily novelwidebandcircularlypolarizeddrawithsquintfreeradiationcharacteristics AT vikrantsingh novelwidebandcircularlypolarizeddrawithsquintfreeradiationcharacteristics AT peixiao novelwidebandcircularlypolarizeddrawithsquintfreeradiationcharacteristics AT rahimtafazolli novelwidebandcircularlypolarizeddrawithsquintfreeradiationcharacteristics AT ahmedakishk novelwidebandcircularlypolarizeddrawithsquintfreeradiationcharacteristics
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Novel wideband circularly polarized DRA with squint-free radiation characteristics

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