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Influence of the channel width on the threshold voltage modulation in m.o.s.f.e.t.s

Influence of the channel width on the threshold voltage modulation in m.o.s.f.e.t.s

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The threshold vollage of an m.o.s. field-effect transistor is modulated by the source-to-substrate reverse bias. In the letter, the theory for long- and short-channel transistors is extended to include the influence of the channel width. The result is an analytical expression for the threshold voltage as a function of geometry and bias that agrees well with experimental data.

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