DocumentCode
1543817
Title
A hot-spot mixer model for phonon-cooled NbN hot electron bolometric mixers
Author
Merkel, H. ; Khosropanah, P. ; Yagoubov, P. ; Kollberg, E.
Author_Institution
Dept. of Microwave Electron., Chalmers Univ. of Technol., Goteborg, Sweden
Volume
9
Issue
2
fYear
1999
fDate
6/1/1999 12:00:00 AM
Firstpage
4201
Lastpage
4204
Abstract
Based on a one dimensional heat transport equation for the electrons in a super-conducting hot electron bolometer (HEB) a model for a hot spot mixer is see up. The hot spot parameters are applied in a small signal oscillator model predicting IV curves and conversion gain. Besides its normal resistance and its IF bandwidth a HEB around its optimal operating point is sufficiently characterized by its hot spot length as a function of heating power. All mixer properties can be derived from this parameter set.
Keywords
bolometers; hot carriers; niobium compounds; superconducting mixers; I-V characteristics; IF bandwidth; NbN; conversion gain; hot spot mixer model; normal resistance; one-dimensional heat transport equation; phonon cooling; small-signal oscillator; superconducting hot electron bolometer; Bandwidth; Bolometers; Critical current; Electromagnetic heating; Electrons; Equations; Microwave technology; Radio frequency; Resistance heating; Voltage;
fLanguage
English
Journal_Title
Applied Superconductivity, IEEE Transactions on
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/77.783951
Filename
783951
Link To Document