LOW-NOISE PARAMETRIC AMPLIFICATION AT 35-GHZ IN A SINGLE JOSEPHSON TUNNEL JUNCTION

被引：22

作者：

MYGIND, J ^{[1
]}

PEDERSEN, NF ^{[1
]}

SOERENSEN, OH ^{[1
]}

DUEHOLM, B ^{[1
]}

LEVINSEN, MT ^{[1
]}

机构：

[1] HC ORSTED INST,PHYS LAB,DK-2100 COPENHAGEN,DENMARK

来源：

APPLIED PHYSICS LETTERS | 1979年 / 35卷 / 01期

关键词：

D O I：

10.1063/1.90906

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Parametric amplification at 35 GHz has been obtained using a single Josephson tunnel junction as the active element. The amplifier was operated in the singly quasidegenerate mode with a pump frequency at 70 GHz. The noise temperature was measured and found correlated with the gain. At the highest gain achieved, 11.6 dB, the noise temperature was 400 K. The noise temperature was reduced considerably by decreasing the gain. At 8 and 4 dB we found 165±25 K and 50±30 K, respectively.

引用

页码：91 / 93

页数：3

共 7 条

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