Title :
Performance of a Cryogenic 3 MM Receiver on a 14 M Radio Telescope
Author :
Raisanen, Antti ; Lamb, James ; Lehto, Arto ; Tiuri, Martti ; Peltonen, Juhani
Author_Institution :
Helsinki University of Technology, Radio Laboratory, Otakaari 5 A, SF-02150 ESPOO 15, Finland
Abstract :
A cooled receiver having a DSB noise temperature of 80-140 K 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. A phase locked LO is injected via waveguide and a ring-filter. This receiver has been tested in the laboratory and on the Metsahovi 13.7 m radio telescope.
Keywords :
Cryogenics; FETs; Frequency; Laboratories; Radio astronomy; Radiofrequency amplifiers; Receivers; Switches; Temperature distribution; Testing;
Conference_Titel :
Microwave Conference, 1983. 13th European
Conference_Location :
Nurnberg, Germany
DOI :
10.1109/EUMA.1983.333274
