1. Characterization and CMRR Modeling of a Carbon-Nanotube Field-Emission Differential Amplifier.
- Author
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Yong Mui Wong, Weng Poo Kang, Davidson, Jimmy L., Kerns, Jr., David V., Huang, J. H., and Galloway, Kenneth F.
- Subjects
CARBON nanotubes ,FIELD emission ,DIFFERENTIAL amplifiers ,INTEGRATED circuits ,TRIODES ,MICROFABRICATION ,ANODES ,CHEMICAL vapor deposition - Abstract
A novel vacuum field-emission differential amplifier (duff-amp) based on carbon-nanotube (CNT) emitters has been developed, modeled, and its ac performance characterized. A dual-mask microfabrication process was employed to achieve a single-chip diff-amp by integrating matched CNT field-emission triodes with built-in split gates and integrated anodes. The identical pair of triode amplifiers was well matched in device characteristics. The measured ac common-mode-rejection ratio (CMRR) of the diff-amp was ∼50 dB. The proposed CMRR semianalytical model was validated with the experimental data. The successful implementation of the CNT diff-amp demonstrates a new way to achieve high-temperature and radiation-tolerant vacuum integrated circuits. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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