학술논문
High-Tc superconducting Josephson mixers for terahertz heterodyne detection.
Document Type
Article
Author
Source
Subject
*JOSEPHSON effect
*HOMODYNE detection
*MIXING circuits
*HIGH temperatures
*IONS
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*
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*
Language
ISSN
0021-8979
Abstract
We report on an experimental and theoretical study of the high-frequency mixing properties of ion-irradiated YBa2Cu3O7 Josephson junctions embedded in THz antennas. We investigated the influence of the local oscillator power and frequency on the device performances. The experimental data are compared with theoretical predictions of the general three-port model for mixers in which the junction is described by the resistively shunted junction model. A good agreement is obtained for the conversion efficiency in different frequency ranges, spanning above and below the characteristic frequencies fc of the junctions. [ABSTRACT FROM AUTHOR]