HTS step-edge Josephson junction terahertz harmonic mixer

Jia Du; Andrew R. Weily; Xiang Gao; Ting Zhang; Cathy P. Foley; Yingjie Jay Guo

doi:10.1088/0953-2048/30/2/024002

HTS step-edge Josephson junction terahertz harmonic mixer

Jia Du, Andrew R. Weily, Xiang Gao, Ting Zhang, Cathy P. Foley, Yingjie Jay Guo

Research output: Contribution to journal › Article

18 Citations (Scopus)

Abstract

A high-temperature superconducting (HTS) terahertz (THz) frequency down-converter or mixer based on a thin-film ring-slot antenna coupled YBa₂Cu₃O_7-x (YBCO)/MgO step-edge Josephson junction is reported. The frequency down-conversion was achieved using higher order harmonics of an applied lower frequency (19-40 GHz) local oscillator signal in the Josephson junction mixing with a THz signal of over 600 GHz, producing a 1-3 GHz intermediate frequency signal. Up to 31st order of harmonic mixing was obtained and the mixer operated stably at temperatures up to 77 K. The design details of the antenna, HTS Josephson junction mixer, the matching and isolation circuits, and the DC and RF performance evaluation are described in this paper.

Original language	English
Article number	024002
Pages (from-to)	1-8
Number of pages	8
Journal	Superconductor Science and Technology
Volume	30
Issue number	2
DOIs	https://doi.org/10.1088/0953-2048/30/2/024002
Publication status	Published - 1 Feb 2017
Externally published	Yes

Keywords

harmonic mixing
high-temperature superconductor
Josephson junction
terahertz antenna
terahertz mixer

Access to Document

10.1088/0953-2048/30/2/024002

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Cite this

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abstract = "A high-temperature superconducting (HTS) terahertz (THz) frequency down-converter or mixer based on a thin-film ring-slot antenna coupled YBa2Cu3O7-x (YBCO)/MgO step-edge Josephson junction is reported. The frequency down-conversion was achieved using higher order harmonics of an applied lower frequency (19-40 GHz) local oscillator signal in the Josephson junction mixing with a THz signal of over 600 GHz, producing a 1-3 GHz intermediate frequency signal. Up to 31st order of harmonic mixing was obtained and the mixer operated stably at temperatures up to 77 K. The design details of the antenna, HTS Josephson junction mixer, the matching and isolation circuits, and the DC and RF performance evaluation are described in this paper.",

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AU - Du, Jia

AU - Weily, Andrew R.

AU - Gao, Xiang

AU - Zhang, Ting

AU - Foley, Cathy P.

AU - Guo, Yingjie Jay

PY - 2017/2/1

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KW - high-temperature superconductor

KW - Josephson junction

KW - terahertz antenna

KW - terahertz mixer

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