High intermodulation gain in a micromechanical Duffing resonator

Details High intermodulation gain in a micromechanical Duffing resonator High intermodulation gain in a micromechanical Duffing resonator

2005-11-23

arxiv.org/abs/cond-mat/0511587v1

Appl. Phys. Lett. 88, 213509 (2006)

Physics

Condensed Matter

Other Condensed Matter

Scientific paper

10.1063/1.2207490

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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