Title :
ASUR-an airborne SIS receiver for atmospheric measurements of trace gases at 625 to 760 GHz
Author :
Mees, J. ; Crewell, S. ; Nett, H. ; de Lange, G. ; van de Stadt, H. ; Kuipers, J.J. ; Panhuyzen, R.A.
Author_Institution :
Space Res. Organ. Netherlands, Groningen, Netherlands
fDate :
11/1/1995 12:00:00 AM
Abstract :
A heterodyne receiver making use of a SIS waveguide mixer with integrated horn and single backshort tuner has been built. It has been used for a series of airborne measurements of atmospheric trace gases, such as HCl and ClO, above northern Europe during the winter of 1993 and 1994. The receiver is suitable for measurements in the range of 625-760 GHz and shows stable operation in the airplane together with high sensitivity. Best achieved noise temperatures are TDSB=310 K at 708 GHz in the laboratory and TSSB=1500 K at 625 GHz for the complete system in the airplane
Keywords :
atmospheric composition; atmospheric measuring apparatus; gas sensors; submillimetre wave measurement; submillimetre wave receivers; superconductor-insulator-superconductor devices; 625 to 760 GHz; ASUR; ClO; HCl; SIS waveguide mixer; airborne SIS receiver; atmospheric measurements; heterodyne receiver; noise temperatures; single backshort tuner; trace gases; Atmospheric measurements; Detectors; Extraterrestrial measurements; Frequency; Gases; Laboratories; Schottky diodes; Superconducting device noise; Temperature sensors; Tuners;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
