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High intermodulation gain in a micromechanical Duffing resonator

R. Almog·S. Zaitsev·O. Shtempluck·E. Buks
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Abstract

In this work we use a micromechanical resonator to experimentally study small signal amplification near the onset of Duffing bistability. The device consists of a PdAu beam serving as a micromechanical resonator excited by an adjacent gate electrode. A large pump signal drives the resonator near the onset of bistability, enabling amplification of small signals in a narrow bandwidth. To first order, the amplification is inversely proportional to the frequency difference between the pump and signal. We estimate the gain to be about 15dB for our device.

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R. Almog, S. Zaitsev, O. Shtempluck, E. Buks. 2005-11-23. High intermodulation gain in a micromechanical Duffing resonator. https://doi.org/10.1063/1.2207490

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