TITLE

Wide bandwidth millimeter wave mixer using a diffusion cooled two-dimensional electron gas

AUTHOR(S)
Lee, Mark; Pfeiffer, L. N.; West, K. W.; Baldwin, K. W.
PUB. DATE
May 2001
SOURCE
Applied Physics Letters;5/7/2001, Vol. 78 Issue 19, p2888
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Very fast millimeter wave mixers have been fabricated from a high mobility two-dimensional electron gas (2DEG) in a GaAs-AlGaAs heterostructure. Using a 115 GHz local oscillator, intermediate frequency (IF) bandwidths exceeding 20 GHz have been obtained for channel lengths L of a few microns. Operating at 77 K, the IF bandwidth scales as L[sup -2], indicating that the response speed is determined by the diffusion transit time of hot electrons to the leads. © 2001 American Institute of Physics.
ACCESSION #
4710426

 

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