Microwave heterodyne receiver based on AlGaAs/GaAs 2DEG bolometer

Author

Wang, K. ; Ramaswamy, R. ; Bell, M. ; Sergeev, A. ; Strasser, G. ; Verevkin, A. ; Mitin, V.

Author_Institution

Univ. at Buffalo, State Univ. of New York, Amherst, NY, USA

fYear

2010

fDate

5-10 Sept. 2010

Firstpage

1

Lastpage

2

Abstract

A hot-electron bolometric mixer (heterodyne detector), which employs the nonlinearities of a heated two-dimensional electron gas (2DEG) medium in a AlGaAs/GaAs heterostructure, was designed and characterized in the 60 GHz to 2.5 THz frequency range. Mixing experiments were performed at frequencies of ~ 100 GHz and at a temperature of 77K which resulted in a measured gain bandwidth to be no less than 8.1 GHz, an internal conversion loss of 21 dB, and an optimal local oscillator power of 0.25 μW/μm². We argue that such hot electron bolometers are promising for the future of THz detection technologies.

Keywords

III-V semiconductors; aluminium compounds; bolometers; gallium arsenide; heterodyne detection; microwave receivers; two-dimensional electron gas; 2DEG bolometer; AlGaAs-GaAs; frequency 60 GHz to 2.5 THz; heated two-dimensional electron gas medium; heterodyne detector; hot-electron bolometric mixer; microwave heterodyne receiver; temperature 77 K; Current measurement; Frequency measurement; Gallium arsenide; Heating; Loss measurement; Mixers; Temperature measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Infrared Millimeter and Terahertz Waves (IRMMW-THz), 2010 35th International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4244-6655-9

Type

conf

DOI

10.1109/ICIMW.2010.5613006

Filename

5613006