Title :
Broadband 230 GHz finline mixer for astronomical imaging arrays
Author :
Yassin, G. ; Padman, R. ; Withington, S. ; Jacobs, K. ; Wulff, S.
Author_Institution :
Dept. of Phys., Cambridge Univ., UK
fDate :
3/13/1997 12:00:00 AM
Abstract :
The authors report the successful operation of an antipodal finline quasi-particle SIS mixer at 230 GHz. The mixer is fed by a waveguide diagonal horn and uses planar circuit technology and integrated tuning. The mixer is tested over the frequency range 213-265 GHz and a receiver noise temperature of ~60 K DSB over the whole of this range is obtained. This work has shown that superconducting finline mixers have low noise and are easy to manufacture and are therefore suitable for large-format imaging arrays
Keywords :
circuit tuning; fin line components; millimetre wave devices; millimetre wave imaging; millimetre wave mixers; radiotelescopes; submillimetre astronomy; submillimetre wave imaging; submillimetre wave mixers; superconductor-insulator-superconductor mixers; 213 to 265 GHz; DSB; astronomical imaging arrays; broadband finline mixer; instrument; integrated tuning; large-format imaging arrays; planar circuit technology; quasi-particle SIS mixer; radiotelescope; receiver noise temperature; submillimetre astronomy; superconducting finline mixers; waveguide diagonal horn feed;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970314
