Millimeterwave emission from Josephson oscillator through thin film junction electrode

Author

Yoshida, K. ; Nagatsuma, T. ; Kumataka, S. ; Enpuku, K.

Author_Institution

Kyushu University, Fukuoka, Japan

Volume

23

Issue

2

fYear

1987

fDate

3/1/1987 12:00:00 AM

Firstpage

1283

Lastpage

1286

Abstract

An experiment on the coupling of the flux-flow type Josephson oscillator to SIS detectors by inductive coupling scheme has been carried out. Radiated powers from the Josephson oscillator were detected by an array of Josephson tunnel junctions fabricated on top of the upper electrode of the oscillator. The thickness of the common electrode was made thin enough to allow inductive coupling through the electrode. The maximum value of the obtained voltage amplitude of the emitted wave from the oscillator was 1.7mV, which is in reasonable agreement with the theoretical one. The present method can be an efficient coupling scheme between the Josephson oscillator and external circuits.

Keywords

Impedance-matching; Josephson device oscillators; Millimeter-wave modulation/demodulation; Millimeter-wave oscillators; Superconductor insulator superconductor devices; Coupling circuits; Electrodes; Equivalent circuits; Impedance matching; Josephson junctions; Local oscillators; Radiation detector circuits; Superconducting thin films; Transistors; Voltage-controlled oscillators;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1987.1064921

Filename

1064921