Stability of HEB receivers at THz frequencies

Details Stability of HEB receivers at THz frequencies Stability of HEB receivers at THz frequencies

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5498..605b&link_type=abstract

Millimeter and Submillimeter Detectors for Astronomy II. Edited by Jonas Zmuidzinas, Wayne S. Holland and Stafford Withington P

Astronomy and Astrophysics

Astronomy

6

Scientific paper

Stability of a hot-electron bolometer (HEB) heterodyne receiver was investigated at frequencies from 0.6THz to 1.9THz. The Allan variance was measured as a function of the integration time and the Allan time was obtained for HEB mixers of different size, as well as with different types of the local oscillator: FIR laser, multiplier chain, and BWO. We have found that due to stronger dependence of the mixer gain and noise vs mixer bias voltage and current the Allan time is shorter for smaller mixers. At 1.6THz the Allan time is 3 sec for 4x0.4μm2 bolometer, and 0.15-0.2 sec for 1x0.15μm2 bolometer. Obtained stability apears to be the same for the FIR laser and the mulitplier chain. The Allan time for smaller bolometers increases to 0.4-0.5sec at 0.6-0.7THz LO frequencies. The influence of the IF chain on the obtained results is also analyzed.

Affiliated with

Also associated with

No associations

Rating

Stability of HEB receivers at THz frequencies 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 Stability of HEB receivers at THz frequencies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stability of HEB receivers at THz frequencies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1810804