Frequency down-conversion in self-pumped HTS R-SQUID mixer

Author

Du, Jinyang ; Macfarlane, J.C.

Author_Institution

CSIRO Mater. Sci. & Eng., Lindfield, NSW, Australia

Volume

47

Issue

13

fYear

2011

Firstpage

772

Lastpage

773

Abstract

A pair of high-temperature-superconducting (HTS) step-edge Josephson junctions connected in the ´resistive-SQUID´ (R-SQUID) configuration has been previously shown to generate a heterodyne oscillation which is frequency-tunable by a control current across the resistor. A method is described which enables the R-SQUID to act both as the local oscillator (LO) and simultaneously as a radio-frequency down-converter element. For the first time the autonomous Josephson mixer-local oscillator device for signal frequencies between 1-5 GHz, over a temperature range of 20-70 K, is demonstrated.

Keywords

SQUIDs; UHF mixers; high-temperature superconductors; microwave frequency convertors; microwave mixers; microwave oscillators; resistors; superconducting microwave devices; superconducting mixers; autonomous Josephson mixer-local oscillator device; frequency 1 GHz to 5 GHz; frequency down-conversion; heterodyne oscillation; high-temperature-superconducting step-edge Josephson junctions; local oscillator; radio-frequency down-converter element; resistive-SQUID configuration; resistor; self-pumped HTS R-SQUID mixer; temperature 20 K to 70 K;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2011.0404

Filename

5931016