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Proceedings Paper

2deg electron bolometric mixers: new results and potential for low-noise thz receivers
Author(s): J.-X. Yang
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Paper Abstract

While SIS and Schottky barrier mixers have demonstrated decreasing receiver noise temperatures up to 500 GHz in the last few years, there is still a lack of very low noise receivers above that frequency. The bulk InSb hot electron (bolometric) mixer is outstanding in terms of noise temperature ( 500 K DSB at 0.8 THz), which indicates that bolometric, bulk mode, mixers have an intrinsic advantage at the higher frequencies. The InSb mixer has the major drawback of a very narrow ( 1 MHz) bandwidth. Smith et al. (1987)[1] proposed the use of the Two-Dimensional Electron Gas (2DEG), biased to cyclotron resonance, as a new mixer medium in order to solve this problem, and realized a direct detector. We have used the same medium in a different mode [2], and demonstrated a hot electron mixer with a three orders of magnitude increase in the bandwidth, compared with the InSb mixer.

Paper Details

Date Published: 14 December 1992
PDF: 2 pages
Proc. SPIE 1929, 17th International Conference on Infrared and Millimeter Waves, 19292W (14 December 1992); doi: 10.1117/12.2298221
Show Author Affiliations
J.-X. Yang, Univ. of Massachusetts (United States)

Published in SPIE Proceedings Vol. 1929:
17th International Conference on Infrared and Millimeter Waves
Richard J. Temkin, Editor(s)

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