Optimization of the phase-locked flux-flow oscillator for the submm integrated receiver

V. P. Koshelets, P. M. Dmitriev, A. B. Ermakov, Alexander Sobolev, M. Y. Torgashin, V. V. Kurin, A. L. Pankratov, Jesper Mygind

Research output: Contribution to journalJournal articleResearchpeer-review


The Superconducting Integrated Receiver (SIR) comprises in one chip a planar antenna integrated with an SIS mixer, a superconducting Flux Flow Oscillator (FFO) acting as Local Oscillator (LO) and a second SIS harmonic mixer (HM) for FFO phase locking. Free-running FFO linewidth well below 10 MHz is required to ensure phase-locked operation of an SIR. Comprehensive experimental study of the Nb-AlOx-Nb FFO linewidth and other main parameters has been carried out in order to achieve this goal. Essential dependence of the FFO linewidth on its width and idle region dimension has been found. It makes possible an optimization of the FFO design and selection of the best FFO parameters for practical operation of the SIR.
Original languageEnglish
JournalI E E E Transactions on Applied Superconductivity
Issue number2
Pages (from-to)964-967
Publication statusPublished - 2005


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