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Título
Comparison between the dynamic performance of double-and single-gate AlInAs/InGaAs HEMTs
Autor(es)
Materia
Monte-Carlo, Método de
Dispositivos electrónicos
Double gate HEMTs
High-frequency electronic devices
Monte Carlo method
Fecha de publicación
2007
Editor
Institute of Electrical and Electronics Engineers (Nueva York, Estados Unidos)
Citación
García Vasallo, B., Wichmann, N., Bollaert, S., Roelens, Y., Cappy A., González Sánchez, T., Pardo Collantes, Daniel y Mateos López, Javier (2007). Comparison between the dynamic performance of double-and single-gate AlInAs/InGaAs HEMTs. "IEEE transactions on electron devices" 54 (11), 2815-2822
Resumen
Se han estudiado las características estáticas y dinámicas de HEMTs de doblre puerta (DG-HEMTs) por medio de simulaciones Monte Carlo, y se han comparado con las de los HEMTs de puerta única. Las simulaciones reproducen adecuadamente los resultados experimentales y permiten confirmar y explicar desde el punto de vista microscópico el origen de la reducción de los efectos de canal corto y el aumento de fmax que se observa en los transistores de doble puerta. The static and dynamic behavior of InAlAs/InGaAsdouble-gate high-electron mobility transistors (DG-HEMTs) isstudied by means of an ensemble 2-D Monte Carlo simulator.The model allows us to satisfactorily reproduce the experimentalperformance of this novel device and to go deeply into its physicalbehavior. A complete comparison between DG and similarstandard HEMTs has been performed, and devices with differentgate lengths have been analyzed in order to check the attenuationof short-channel effects expected in the DG-structures. Wehave confirmed that, for very small gate lengths, short-channeleffects are less significant in the DG-HEMTs, leading to a betterintrinsic dynamic performance. Moreover, the higher values ofthe transconductance over drain conductance ratio gm/gd and,especially, the lower gate resistance Rg also provide a significantimprovement of the extrinsic fmax.
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Colecciones
- GINEAF. Artículos [88]