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Wide-bandwidth electron bolometric mixers - A 2DEG prototype and potential for low-noise THz receiversThis paper presents a new type of electron bolometric ('hot electron') mixer. We have demonstrated a 3 order-of-magnitude improvement in the bandwidth compared with previously known types of electron bolometric mixers, by using the two-dimensional electron gas (2DEG) medium at the heterointerface between AlGaAs and GaAs. We have tested both in-house MOCVD-grown material and MBE material, with similar results. The conversion loss (Lc) at 94 GHz is presently 18 dB for a mixer operating at 20 K, and calculations indicate that Lc can be decreased to about 10 dB in future devices. Calculated and measured curves of Lc versus P(LO), and I(DC), respectively, agree well. We argue that there are several different configurations of electron bolometric mixers, which will all show wide bandwidth, and that these devices are likely to become important as low-noise THz receivers in the future.
Document ID
19930068230
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Yang, Jian-Xun (NASA Headquarters Washington, DC United States)
Agahi, Farid (NASA Headquarters Washington, DC United States)
Dai, Dong (NASA Headquarters Washington, DC United States)
Musante, Charles F. (NASA Headquarters Washington, DC United States)
Grammer, Wes (NASA Headquarters Washington, DC United States)
Lau, Kei M. (NASA Headquarters Washington, DC United States)
Yngvesson, K. S. (Massachusetts Univ. Amherst, United States)
Date Acquired
August 16, 2013
Publication Date
April 1, 1993
Publication Information
Publication: IEEE Transactions on Microwave Theory and Techniques
Volume: 41
Issue: 4
ISSN: 0018-9480
Subject Category
ELECTRONICS AND ELECTRICAL ENGINEERING
Funding Number(s)
CONTRACT_GRANT: NAGW-1659
Distribution Limits
Public
Copyright
Other