Self-pumped HTS Josephson heterodyne tunable mixer

Publication Type:
Journal Article
Citation:
Superconductor Science and Technology, 2012, 25 (2)
Issue Date:
2012-02-01
Full metadata record
Files in This Item:
Filename Description Size
Du_2012_Supercond._Sci._Technol._25_025019.pdfPublished Version672.72 kB
Adobe PDF
Experimental evaluation of a high-temperature superconducting Josephson heterodyne mixer based on a resistive-SQUID configuration is reported. The device consists of two YBa 2 Cu 3 O 7-x step-edge Josephson junctions connected via a small resistor in an otherwise superconducting loop. It has been previously shown to generate a heterodyne oscillation, which is frequency-tunable by a control current through the resistor. Under certain conditions, this device can operate as a frequency-tunable heterodyne mixer (down-converter) in the presence of an RF signal. In this paper, we describe the operation of the autonomous Josephson mixerlocal oscillator device and present the experimental results on the mixer performances in terms of the junction currentvoltage characteristics, the frequency tunability, linearity, and dynamic range as well as their temperature dependence for signal frequencies from 1 to 5GHz. © 2012 IOP Publishing Ltd.
Please use this identifier to cite or link to this item: