Title :
Performance of a cryogenic 3 mm Schottky-mixer receiver on the Metsÿhovi 14 m radio telescope
Author :
R¿¿is¿¿nen, A. ; Lehto, A. ; Tiuri, M. ; Lamb, John
Author_Institution :
Helsinki University of Technology, Radio Laboratory, Espoo, Finland
Abstract :
A cooled receiver with some novel features and a noise temperature of 80¿140 K double sideband in the frequency range 75¿95 GHz has been built for radio astronomical observations. The quasioptical beam switch is followed by a 3 mm Schottky mixer and FET amplifier at 1.4 GHz. For calibration the receiver is provided with a cold reference load within the Dewar.
Keywords :
Schottky-barrier diodes; mixers (circuits); radiotelescopes; receivers; solid-state microwave circuits; 1.4 GHz; 75 to 95 GHz frequency range; FET amplifier; Metsahovi 14 m radio telescope; calibration; cold reference load; cooled receiver; cryogenic 3 mm Schottky-mixer receiver; noise temperature; quasioptical beam switch; radio astronomical observations;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830608
