Modeling of the noise behavior of graded bandgap channel MOSFET at GHz frequencies

Ali Abou-Elnour

doi:10.1117/12.547339

25 May 2004 Modeling of the noise behavior of graded bandgap channel MOSFET at GHz frequencies

Ali Abou-Elnour

Proceedings Volume 5470, Noise in Devices and Circuits II; (2004) https://doi.org/10.1117/12.547339
Event: Second International Symposium on Fluctuations and Noise, 2004, Maspalomas, Gran Canaria Island, Spain

Abstract

A novel graded band gap channel Si-SiGe MOSFET structure has been suggested and its characteristics has been investigated. The investigations indicated that the suggested structure reduces the short-channel effects, increases the cutoff frequency, and hence makes it usage at high frequency and Low noise applications prefeable. To show the superior performance of the suggested structure at GHz frequencies, and as an example, the noise behavior of the structure is thoroughly investigated. First the device noise model parameters are calculated from D.C. and A.C. characteristics. The extracted noise model parameters are then used to determine the minimum noise figure and minimum noise temperature at GHz frequencies. The effects of the different device parameters on the noise performance are determined. Finally, the results are compared with those of conventional MOSFET structure to show the superior performance of graded band gap Si-SiGe MOSFETs at these frequency ranges.

Citation Download Citation

Ali Abou-Elnour "Modeling of the noise behavior of graded bandgap channel MOSFET at GHz frequencies", Proc. SPIE 5470, Noise in Devices and Circuits II, (25 May 2004); https://doi.org/10.1117/12.547339

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