Ultra Wideband Beam-steering at mm-wave Frequency with Planar Dielectric Phase Transformers

Baba, AA; Hashmi, RM; Attygalle, M; Esselle, KP; Borg, D

Ultra Wideband Beam-steering at mm-wave Frequency with Planar Dielectric Phase Transformers

Baba, AA Hashmi, RM Attygalle, M Esselle, KP Borg, D

Permalink

Publisher:: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2022, 70, (3), pp. 1719-1728
Issue Date:: 2022-01-01

Closed Access

	Filename	Description	Size
	Ultrawideband_Beam_Steering_at_mm-Wave_Frequency_With_Planar_Dielectric_Phase_Transformers.pdf	Published version	3.98 MB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Baba, AA
dc.contributor.author	Hashmi, RM
dc.contributor.author	Attygalle, M
dc.contributor.author	Esselle, KP
dc.contributor.author	Borg, D
dc.date.accessioned	2022-12-07T21:05:35Z
dc.date.available	2022-12-07T21:05:35Z
dc.date.issued	2022-01-01
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2022, 70, (3), pp. 1719-1728
dc.identifier.issn	0018-926X
dc.identifier.issn	1558-2221
dc.identifier.uri	http://hdl.handle.net/10453/164225
dc.description.abstract	In this paper, a new method to design an ultra-wideband beam-steering antenna system is presented. The system is completely passive and suitable for millimeter-wave applications, including some in defence, where both discrete and continuous beam-steering in two dimensions (elevation and azimuth) is required at a reasonably fast speed. The beam-steering capability is achieved using a pair of distinct low-profile and planar phase transformers (PPTs) placed in the near-field region of a fixed-beam radiating source. The antenna system demonstrates a steering and impedance-matching bandwidth of 28.6%, from 30 to 40 GHz. A prototype of the new antenna system, including a pair of thin PPTs and a completely automated mechanical system to rotate each of the PPTs around the antenna axis, has been fabricated and tested. The pair of rotating PPTs, equivalent to a pair of 3D dielectric PTs, introduces a pre-calculated phase gradient to the input near field from the fixed beam antenna and creates an output near field that will radiate towards a selected direction, which can be varied within a large conical region with a maximum apex angle of 108°. The system exhibits predicted and measured peak gains of 21.5 dBi and 21.7 dBi, respectively, and the measured gain variation over 2D beam steering is less than 2.2 dB. This beam steering method obviates the need for expensive phase shifters and distribution networks, which are also lossy at mm-wave frequencies. The measured results validate the predicted wideband matching and steering performance of the system with a close agreement.
dc.language	English
dc.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation
dc.relation.isbasedon	10.1109/TAP.2021.3111637
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.title	Ultra Wideband Beam-steering at mm-wave Frequency with Planar Dielectric Phase Transformers
dc.type	Journal Article
utslib.citation.volume	70
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	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-12-07T21:05:00Z
pubs.issue	3
pubs.publication-status	Published
pubs.volume	70
utslib.citation.issue	3

Abstract:

In this paper, a new method to design an ultra-wideband beam-steering antenna system is presented. The system is completely passive and suitable for millimeter-wave applications, including some in defence, where both discrete and continuous beam-steering in two dimensions (elevation and azimuth) is required at a reasonably fast speed. The beam-steering capability is achieved using a pair of distinct low-profile and planar phase transformers (PPTs) placed in the near-field region of a fixed-beam radiating source. The antenna system demonstrates a steering and impedance-matching bandwidth of 28.6%, from 30 to 40 GHz. A prototype of the new antenna system, including a pair of thin PPTs and a completely automated mechanical system to rotate each of the PPTs around the antenna axis, has been fabricated and tested. The pair of rotating PPTs, equivalent to a pair of 3D dielectric PTs, introduces a pre-calculated phase gradient to the input near field from the fixed beam antenna and creates an output near field that will radiate towards a selected direction, which can be varied within a large conical region with a maximum apex angle of 108°. The system exhibits predicted and measured peak gains of 21.5 dBi and 21.7 dBi, respectively, and the measured gain variation over 2D beam steering is less than 2.2 dB. This beam steering method obviates the need for expensive phase shifters and distribution networks, which are also lossy at mm-wave frequencies. The measured results validate the predicted wideband matching and steering performance of the system with a close agreement.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/164225