HETERODYNE MIXING WITH NB TUNNEL-JUNCTIONS ABOVE THE GAP FREQUENCY

被引：32

作者：

DELANGE, G

HONINGH, CE

KUIPERS, JJ

SCHAEFFER, HHA

PANHUYZEN, RA

KLAPWIJK, TM

VANDESTADT, H

DEGRAAUW, MMWM

机构：

[1] UNIV GRONINGEN,DEPT MAT RES,9747 AG GRONINGEN,NETHERLANDS

[2] SPACE RES ORG NETHERLANDS,9747 AG GRONINGEN,NETHERLANDS

来源：

APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 22期

关键词：

D O I：

10.1063/1.111399

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The noise and gain of a heterodyne waveguide mixer employing Nb/Al2O3/Nb superconducting tunnel junctions with an on-chip integrated tuning element are measured and analyzed at 680-750 GHz and at 840 GHz. The lowest receiver noise temperatures are 400 K (double side band) at 720 GHz and 1500 K (3000 K including the beam splitter loss) at 840 GHz. We compare data of the pumped I-V curves with the quantum theory of mixing and demonstrate good agreement at frequencies well above the gap frequency.

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页码：3039 / 3041

页数：3

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