Low-Noise Sis Receivers for New Radio-Astronomy Projects

被引：13

作者：

Rudakov, K., I ^{[1
,2
,3
]}

Dmitriev, P. N. ^{[1
]}

Baryshev, A. M. ^{[1
]}

Khudchenko, A., V ^{[1
,2
]}

Hesper, R. ^{[2
]}

Koshelets, V. P. ^{[1
]}

机构：

[1] Russian Acad Sci, VA Kotelnikov Inst Radioengn & Elect, Moscow, Russia

[2] Univ Groningen, Astron Inst, Groningen, Netherlands

[3] Moscow Phys Tech Inst, Dolgoprudnyi, Russia

来源：

RADIOPHYSICS AND QUANTUM ELECTRONICS | 2019年 / 62卷 / 7-8期

关键词：

JOSEPHSON TUNNEL-JUNCTIONS; MIXERS;

D O I：

10.1007/s11141-020-10001-7

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have developed, manufactured, and tested a waveguide mixer in the range 211-275 GHz on the basis of the superconductor-insulator-superconductor (SIS) tunnel structures. The methods of manufacturing high-quality tunnel structures on quartz substrates have been worked out. To extend the receiver band, the Nb/AlOx/Nb and Nb/AlN/NbN tunnel junctions with a high current density of up to 20 kA/cm(2) are employed. The dependence of the characteristics of the receiving elements on the signal frequency is simulated for the intermediate-frequency band 4-12 GHz. The measurements demonstrate a good agreement of the input band of the receiving structures with the calculated results. The uncorrected noise temperature of the receiver amounts to 24 K at a frequency of 265 GHz, which is only two times higher than the quantum limit. The receivers under development are intended for a number of newly-built ground-based radio telescopes ("Suffa" and LLAMA), as well as for the "Millimetron" space program.

引用

页码：547 / 555

页数：9

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