A 180 GHz to 220 GHz Wideband Transmitarray with Wide-Angle Beam Steering for Intersatellite Communications

Song, LZ; Zhang, T; Lai, JX; Yang, Y; Du, J

A 180 GHz to 220 GHz Wideband Transmitarray with Wide-Angle Beam Steering for Intersatellite Communications

Song, LZ Zhang, T Lai, JX Yang, Y

Du, J

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Publisher:: Institute of Electrical and Electronics Engineers (IEEE)
Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2023, PP, (99), pp. 1-1
Issue Date:: 2023-01-01

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Field	Value	Language
dc.contributor.author	Song, LZ
dc.contributor.author	Zhang, T
dc.contributor.author	Lai, JX
dc.contributor.author	Yang, Y https://orcid.org/0000-0001-7439-2156
dc.contributor.author	Du, J
dc.date.accessioned	2024-02-05T03:09:37Z
dc.date.available	2024-02-05T03:09:37Z
dc.date.issued	2023-01-01
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2023, PP, (99), pp. 1-1
dc.identifier.issn	0018-926X
dc.identifier.issn	1558-2221
dc.identifier.uri	http://hdl.handle.net/10453/175292
dc.description.abstract	This article presents a terahertz (THz) wideband transmitarray antenna with wide-angle beam steering for intersatellite communications. A new design method is developed for beam steering/multibeam transmitarrays based on feed displacement. The phase compensations on the transmitarray aperture are theoretically analysed for two steered symmetrical beams from two conjugate foci in an arbitrary azimuthal plane. Then, the focus for a boresight beam is investigated to minimise the corresponding phase errors. A circular feed track is produced with the three foci, enabling wide-angle and low-scanning-loss beam steering by changing the focal point. A unit cell model based on the Huygens metasurface is designed with only one substrate layer, capable of continuously tuning the phase in a 360° range with low transmission losses. The THz transmitarray prototype is engineered with the developed beam-steering method and unit cells. The prototype is experimentally verified with a wideband stable beam-steering performance from 180 GHz to 220 GHz in a wide angular range of ±48°. The measured minimal scanning loss is only 1.4 dB. The measured 3-dB gain bandwidth of the boresight beam is 19.1%.
dc.language	en
dc.publisher	Institute of Electrical and Electronics Engineers (IEEE)
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation
dc.relation.isbasedon	10.1109/TAP.2023.3324421
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.subject.classification	4006 Communications engineering
dc.subject.classification	4008 Electrical engineering
dc.subject.classification	4009 Electronics, sensors and digital hardware
dc.title	A 180 GHz to 220 GHz Wideband Transmitarray with Wide-Angle Beam Steering for Intersatellite Communications
dc.type	Journal Article
utslib.citation.volume	PP
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	1005 Communications Technologies
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	open_access	*
dc.date.updated	2024-02-05T03:09:35Z
pubs.issue	99
pubs.publication-status	Published
pubs.volume	PP
utslib.citation.issue	99

Abstract:

This article presents a terahertz (THz) wideband transmitarray antenna with wide-angle beam steering for intersatellite communications. A new design method is developed for beam steering/multibeam transmitarrays based on feed displacement. The phase compensations on the transmitarray aperture are theoretically analysed for two steered symmetrical beams from two conjugate foci in an arbitrary azimuthal plane. Then, the focus for a boresight beam is investigated to minimise the corresponding phase errors. A circular feed track is produced with the three foci, enabling wide-angle and low-scanning-loss beam steering by changing the focal point. A unit cell model based on the Huygens metasurface is designed with only one substrate layer, capable of continuously tuning the phase in a 360° range with low transmission losses. The THz transmitarray prototype is engineered with the developed beam-steering method and unit cells. The prototype is experimentally verified with a wideband stable beam-steering performance from 180 GHz to 220 GHz in a wide angular range of ±48°. The measured minimal scanning loss is only 1.4 dB. The measured 3-dB gain bandwidth of the boresight beam is 19.1%.

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http://hdl.handle.net/10453/175292