Title :
An integrated receiver with phase-locked superconducting oscillator
Author :
Shitov, Sergey V. ; Koshelets, Valery P. ; Ermakov, Andrey B. ; Dmitriev, Pavel N. ; Filippenko, Lyudmila V. ; Khodos, Vladimir V. ; Vaks, Vladimir L. ; Yagoubov, Pavel A. ; Vreeling, Willem-Jan ; Wesselius, Paul R.
Author_Institution :
Inst. of Radio Eng. & Electron., Russian Acad. of Sci., Moscow, Russia
fDate :
6/1/2003 12:00:00 AM
Abstract :
A submillimeter heterodyne spectrometer employing a superconducting local oscillator is demonstrated for the first time. The sensor chip comprises a quasioptical double-dipole lens-antenna SIS mixer (TRX=250 K at 380 GHz), a Josephson flux-flow oscillator and a SIS harmonic mixer. Room temperature PLL electronics is used with a reference source at 10 GHz. The PLL bandwidth of 10 MHz and the hold range of 3 GHz are estimated for locking at 32-th harmonic of the reference source. The spectral resolution better than 1 MHz and broadening effect of a spectral line of SO2 gas at 326867 MHz are measured with a laboratory gas cell at 300 K at pressure 0.03 - 0.3 mbar using acousto-optical spectrometer.
Keywords :
heterodyne detection; phase locked loops; submillimetre wave oscillators; submillimetre wave receivers; submillimetre wave spectroscopy; superconductor-insulator-superconductor mixers; 0.03 to 0.3 mbar; 300 K; 326867 MHz; 380 GHz; Josephson flux-flow oscillator; SIS harmonic mixer; SO2; SO2 gas; acousto-optical spectrometer; local oscillator; phase-locked loop; quasioptical double-dipole lens-antenna SIS mixer; spectral line broadening; spectral resolution; submillimeter heterodyne spectrometer; superconducting integrated receiver; Atmospheric measurements; Bandwidth; Extraterrestrial measurements; Local oscillators; Magnetic shielding; Phase locked loops; Spectroscopy; Superconducting devices; Superconducting microwave devices; Temperature sensors;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2003.813998
