An On-Chip Superconducting Kinetic Inductance Fourier Transform Spectrometer for Millimeter-Wave Astronomy

F. B. Faramarzi, P. Mauskopf, S. Gordon, G. Che, P. Day, H. Mani, H. Surdi, S. Sypkens, P. Barry, E. Shirokoff, R. B. Thakur

Research output: Contribution to journalArticle


An on-chip FTS consists of two waveguides coupled to long superconducting transmission lines (STLs) (∼ 620 mm) using two coupling probes. The signal propagating on one of the STLs is phase-shifted with respect to the other line with a bias current that affects the nonlinear dependence of kinetic inductance, Lk(I) of the STL material. Here we describe the design and simulation of a superconducting on-chip FTS coupled to a dual polarization W-band (90–110 GHz) waveguide. These devices have applications in ground-based and space-based millimeter-wave spectral surveys.

Original languageEnglish (US)
JournalJournal of Low Temperature Physics
Publication statusAccepted/In press - Jan 1 2020



  • Fourier transform spectrometer
  • Kinetic inductance
  • Millimeter-wave astronomy
  • Superconducting transmission lines

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics

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