A hot-spot mixer model for phonon-cooled NbN hot electron bolometric mixers

Authors
Merkel, H Khosropanah, P Yagoubov, P Kollberg, E
Citation
H. Merkel et al., A hot-spot mixer model for phonon-cooled NbN hot electron bolometric mixers, IEEE APPL S, 9(2), 1999, pp. 4201-4204
Citations number
8
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
ISSN journal
10518223 → ACNP
Volume
9
Issue
2
Year of publication
1999
Part
3
Pages
4201 - 4204
Database
ISI
SICI code
1051-8223(199906)9:2<4201:AHMMFP>2.0.ZU;2-I
Abstract
Based on a one dimensional heat transport equation for the electrons in a s uper-conducting hot electron bolometer (HEB) a model for a hot spot mixer i s set up. The hot spot parameters are applied in a small signal oscillator model predicting IV curves and conversion gain. Besides its normal resistan ce and its IF bandwidth a HEB around its optimal operating point is suffici ently characterized by its hot spot length as a function of heating power. All mixer properties can be derived from this parameter set.