FinFETs operated with varying bias, and in particular with Short-circuited Gates (SG) or Independent Gates (IG), are actively investigated for RF analog applications. The device process variability is known to vary, at least for DC performances, according to the FINFET bias. This paper presents a novel, comprehensive physics-based variability analysis focused on AC parameters for a double-gate (DG) MOSFET (FinFET) both in SG and IG conditions. The analysis is carried out with a numerically efficient Green's Function technique [1], [2], that exploits a nonlinear variability analysis tool in quasi-linear condition. The AC variability analysis of the FinFET includes selected geometrical and physical parameters, such as the fin width, the source/drain-gate distance and the doping level, whose role is especially relevant for the extraction of the device parasitics' variations. We demonstrate that the sensitivity of the AC parameters differs in the IG and SG case, especially concerning gate capacitances.
Physics-based modeling of FinFET RF variability under Shorted- and Independent-Gates bias / Bughio, AHSIN MURTAZA; DONATI GUERRIERI, Simona; Bonani, Fabrizio; Ghione, Giovanni. - ELETTRONICO. - (2017), pp. 1-4. (Intervento presentato al convegno Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop (INMMiC) tenutosi a Graz, Austria nel 20-21 April 2017) [10.1109/INMMIC.2017.7927300].
Physics-based modeling of FinFET RF variability under Shorted- and Independent-Gates bias
BUGHIO, AHSIN MURTAZA;DONATI GUERRIERI, Simona;BONANI, FABRIZIO;GHIONE, GIOVANNI
2017
Abstract
FinFETs operated with varying bias, and in particular with Short-circuited Gates (SG) or Independent Gates (IG), are actively investigated for RF analog applications. The device process variability is known to vary, at least for DC performances, according to the FINFET bias. This paper presents a novel, comprehensive physics-based variability analysis focused on AC parameters for a double-gate (DG) MOSFET (FinFET) both in SG and IG conditions. The analysis is carried out with a numerically efficient Green's Function technique [1], [2], that exploits a nonlinear variability analysis tool in quasi-linear condition. The AC variability analysis of the FinFET includes selected geometrical and physical parameters, such as the fin width, the source/drain-gate distance and the doping level, whose role is especially relevant for the extraction of the device parasitics' variations. We demonstrate that the sensitivity of the AC parameters differs in the IG and SG case, especially concerning gate capacitances.Pubblicazioni consigliate
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https://hdl.handle.net/11583/2670898
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