Thz range low-noise sis receivers for space and ground-based radio astronomy

Kirill I. Rudakov, Andrey V. Khudchenko, Lyudmila V. Filippenko, Maxim E. Paramonov, Ronald Hesper, Daniele Aragão Ronsó da Costa Lima, Andrey M. Baryshev, Valery P. Koshelets*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

10 Citations (Scopus)
103 Downloads (Pure)


We report on research in the field of low-noise receiving systems in the sub-terahertz (THz) range, carried out in recent years, aimed at developing receivers with quantum sensitivity for imple-mentation in space and ground-based radio telescopes. Superconductor-Insulator-Superconductor (SIS) mixers based on high-quality tunnel junctions are the key elements of the most sensitive sub-THz heterodyne receivers. Motivations and physical background for technology improvement and optimization, as well as fabrication details, are described. This article presents the results of the SIS receiver developments for the 211–275 GHz and 790–950 GHz frequency ranges with a noise temperature in the double sideband (DSB) mode of approximTELY 20 K and 200 K, respectively. These designs and achievements are implemented in the development of the receiving systems for the Russian Space Agency mission “Millimetron”, and for the ground-based APEX (Atacama Pathfinder EXperiment) telescope.

Original languageEnglish
Article number10087
Number of pages15
JournalApplied Sciences (Switzerland)
Issue number21
Publication statusPublished - 1-Nov-2021


  • Low-noise SIS receivers
  • Niobium-based high-quality tunnel junctions
  • Radio astronomy
  • THz range quantum-limited mixers


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