Measurement of the direct-detection responses of a 500-GHz and a 660-GHz waveguide superconducting SIS mixer

Author

Li, Jing ; Wang, Ming-Jye ; Shi, Sheng-Cai ; Matsuo, Hiroshi

Author_Institution

Purple Mountain Obs., Chinese Acad. of Sci., Nanjing, China

Volume

4

fYear

2005

fDate

4-7 Dec. 2005

Abstract

This paper presents the direct-detection responses of a 500-GHz and a 660-GHz waveguide superconducting SIS (superconductor-insulator-superconductor) mixer measured with a Fourier transform spectrometer (FTS). The two superconducting SIS mixers adopt the same type of junction tuning circuit (i.e., parallel connected twin SIS junctions), but are of different designs for the junction feed point where RF signals are coupled and then transmitted to the SIS junction tuning circuit and have different mixer design criteria. The experimental results are discussed in detail.

Keywords

submillimetre wave mixers; superconductor-insulator-superconductor mixers; waveguide components; 500 GHz; 660 GHz; Fourier transform spectrometer; SIS junction tuning circuit; direct detection response; junction feed point; superconductor-insulator-superconductor mixer; waveguide superconducting SIS mixer; Circuit optimization; Extraterrestrial measurements; Feeds; Frequency; Josephson junctions; Niobium; Observatories; Signal design; Superconducting devices; Waveguide junctions; FTS; direct detection; submillimeter; superconducting SIS mixers; twin junctions;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings

Print_ISBN

0-7803-9433-X

Type

conf

DOI

10.1109/APMC.2005.1606815

Filename

1606815