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Low flicker-noise GaN/AlGaN heterostructure field-effect transistors for microwave communications

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7 Author(s)
Balandin, A. ; Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA ; Morozov, S.V. ; Cai, S. ; Li, R.
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We report a detailed investigation of flicker noise in novel GaN/AlGaN heterostructure field-effect transistors (GaN HFET). Low values of 1/f noise found in these devices (i.e., the Hooge parameter is on the order of 10-1) open up the possibility for applications in communication systems. We have examined the scaling of the noise spectral density with the device dimensions in order to optimize their performance. It was also found that the slope γ of the 1/fγ noise density spectrum is in the 1.0-1.3 range for all devices and decreases with the decreasing (i.e., more negative) gate bias. The results are important for low-noise electronic technologies requiring a low phase-noise level

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:47 ,  Issue: 8 )

Date of Publication:

Aug 1999

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