A 691 GHz sis receiver for radio astronomy

Details A 691 GHz sis receiver for radio astronomy A 691 GHz sis receiver for radio astronomy

Oct 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ijimw..14.1867s&link_type=abstract

International Journal of Infrared and Millimeter Waves, Volume 14, Issue 10, pp.1867-1887

Astronomy and Astrophysics

Astronomy

15

Quasioptical Sis Mixers, Submillimeter Radiometers, Radio Astronomy

Scientific paper

We report the development of a low noise heterodyne receiver optimized for astronomical observations in the 650 GHz atmospheric window, and specifically for the CO( J=6→5) line at 691.5 GHz. The system is based on an open structure SIS heterodyne mixer pumped by a continuously tunable solid state oscillator. A niobium SIS junction double array is placed at the end of an integrated V-Antenna. For broad band impedance matching a combination of microstrip impedance transformer and radial stub was used. Receiver noise temperatures of 550 K DSB at 684 GHz were achieved at a 1.8 K physical temperature. The performance improved substantially when decreasing the temperature from 4.2 to 1.8 K. Comparison of model calculations and Fourier transform direct detection measurements of the tuning structure implies that this effect is likely due to the coincidence of operational frequency and the gap frequency of the niobium.

Affiliated with

Also associated with

No associations

Rating

A 691 GHz sis receiver for radio astronomy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A 691 GHz sis receiver for radio astronomy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A 691 GHz sis receiver for radio astronomy will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1327781