A wideband terahertz high-T <inf>c</inf> superconducting Josephson-junction mixer: Electromagnetic design, analysis and characterization

Gao, X; Zhang, T; Du, J; Weily, AR; Guo, YJ; Foley, CP

A wideband terahertz high-T <inf>c</inf> superconducting Josephson-junction mixer: Electromagnetic design, analysis and characterization

Gao, X Zhang, T

Du, J

Weily, AR Guo, YJ

Foley, CP

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Publication Type:: Journal Article
Citation:: Superconductor Science and Technology, 2017, 30 (9)
Issue Date:: 2017-08-14

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Field	Value	Language
dc.contributor.author	Gao, X	en_US
dc.contributor.author	Zhang, T https://orcid.org/0000-0001-6436-125X	en_US
dc.contributor.author	Du, J https://orcid.org/0000-0001-8111-9588	en_US
dc.contributor.author	Weily, AR	en_US
dc.contributor.author	Guo, YJ https://orcid.org/0000-0001-6008-9682	en_US
dc.contributor.author	Foley, CP	en_US
dc.date.available	2020-05-25T19:04:42Z
dc.date.issued	2017-08-14	en_US
dc.identifier.citation	Superconductor Science and Technology, 2017, 30 (9)	en_US
dc.identifier.issn	0953-2048	en_US
dc.identifier.uri	http://hdl.handle.net/10453/120066
dc.description.abstract	© 2017 IOP Publishing Ltd. This paper presents a wideband terahertz (THz) mixer based on a thin-film antenna-coupled high-temperature superconducting (HTS) YBa2Cu3O7-x (YBCO) step-edge Josephson junction. The HTS mixer enables the flexible harmonic mixing operation at multiple THz bands with the same microwave local oscillator (LO) source, and features very wide intermediate-frequency or instantaneous bandwidth. In order to optimize the frequency down-conversion performance of the mixer, systematic electromagnetic design and analysis have been carried out to improve the power coupling of THz radiation as well as wideband transmission of microwave signals. Experimental characterization of a fabricated device prototype has demonstrated that the mixer exhibits good performance at both the 200 GHz and 600 GHz bands. Detailed measurement results including the DC characteristics, LO pumping requirement, frequency response, mixing linearity and conversion gain are presented in this paper.	en_US
dc.relation.ispartof	Superconductor Science and Technology	en_US
dc.relation.isbasedon	10.1088/1361-6668/aa7cc1	en_US
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.classification	General Physics	en_US
dc.title	A wideband terahertz high-T <inf>c</inf> superconducting Josephson-junction mixer: Electromagnetic design, analysis and characterization	en_US
dc.type	Journal Article
utslib.citation.volume	9	en_US
utslib.citation.volume	30	en_US
utslib.for	0204 Condensed Matter Physics	en_US
utslib.for	0912 Materials Engineering	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
pubs.embargo.period	Not known	en_US
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
pubs.organisational-group	/University of Technology Sydney/Strength - GBDTC - Global Big Data Technologies
utslib.copyright.status	open_access	*
pubs.issue	9	en_US
pubs.publication-status	Published	en_US
pubs.volume	30	en_US

Abstract:

© 2017 IOP Publishing Ltd. This paper presents a wideband terahertz (THz) mixer based on a thin-film antenna-coupled high-temperature superconducting (HTS) YBa2Cu3O7-x (YBCO) step-edge Josephson junction. The HTS mixer enables the flexible harmonic mixing operation at multiple THz bands with the same microwave local oscillator (LO) source, and features very wide intermediate-frequency or instantaneous bandwidth. In order to optimize the frequency down-conversion performance of the mixer, systematic electromagnetic design and analysis have been carried out to improve the power coupling of THz radiation as well as wideband transmission of microwave signals. Experimental characterization of a fabricated device prototype has demonstrated that the mixer exhibits good performance at both the 200 GHz and 600 GHz bands. Detailed measurement results including the DC characteristics, LO pumping requirement, frequency response, mixing linearity and conversion gain are presented in this paper.

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http://hdl.handle.net/10453/120066