Length scaling of bandwidth and noise in hot-electron superconducting mixers

Applied Physics Letters

Volumn 68, Issue 23, 1996, Pages 3344-3346

  Burke, P J ^a   Schoelkopf, R J ^a   Prober, D E ^a   Skalare, A ^b   McGrath, W R ^b   Bumble, B ^b   Leduc, H G ^b  

^a YALE UNIVERSITY   (United States)

^b CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

BANDWIDTH; COOLING; CURRENT VOLTAGE CHARACTERISTICS; ELECTRONS; HOT CARRIERS; NATURAL FREQUENCIES; NIOBIUM; PHONONS; SPURIOUS SIGNAL NOISE; SUPERCONDUCTING FILMS; TEMPERATURE MEASUREMENT;

COUPLED CONVERSION EFFICIENCY; HOT ELECTRON SUPERCONDUCTING MIXERS; INTERMEDIATE FREQUENCY; MIXER NOISE TEMPERATURE;

BOLOMETERS;

EID: 0030567603     PISSN: 00036951     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.116052     Document Type: Article

References (13)

1. M. J. Wengler, Proc. IEEE 80, 1810 (1992); R. Blundell and C. E. Tong, Proc. IEEE 80, 1702 (1992).
2. E. M. Gershenzon, G. N. Gol'tsman, I. G. Gogidze, Y. P. Gusev, A. I. Elant'ev, B. S. Karasik, and A. D. Semenov, Sov. Phys. Superconductivity 3, 1582 (1990).
3. G. N. Gol'tsman, B. S. Karasik, O. V. Okunev, A. L. Dzardanov, E. M. Gershenzon, H. Ekström, S. Jacobsson, and E. Kollberg, IEEE Trans. Appl. Supercond. INS 5, 3065 (1995).
4. D. E. Prober, Appl. Phys. Lett. AIP 62, 2119 (1993).
5. c.
6. A. Skalare, W. R. McGrath, B. Bumble, H. G. LeDuc, P. J. Burke, A. A. Verheijen, R. J. Schoelkopf, and D. E. Prober, Appl. Phys. Lett. AIP 68, 1558 (1996).
7. Evidence for such a crossover in the nonsuperconductor AuPd has recently been presented in W. Kanskar and M. N. Wyborne, Phys. Rev. Lett. 73, 2123 (1994); and D. E. Prober, Phys. Rev. Lett. 75, 3964 (1995); and for NbC in B. S. Karasik, K. S. Il'in, E. V. Pechen', and S. I. Krasnosvobodtsev, Appl. Phys. Lett. 68 853 (1996). Our work is the first demonstration of such a crossover in Nb, and is also the first test of this crossover under actual receiver conditions, such as strong self-heating and large LO power.
8. B. Bumble and H. G. LeDuc (unpublished).
9. The power coupling to the device in the normal state from the cold rf input was measured to be above 90% from 0.1-12 GHz. The match is expected to remain this good to above 20 GHz.
10. A cooled dc bias tee (Anritsu K250) was used. The dc load line was 20.
11. th.
12. For devices D and E, the dominant noise at low IF is due to thermal flucuations, but it is much too small to measure at 1.5 GHz.
13. sq=33, and T=5.5 K.