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In this paper we report the first experimental demonstration of Micro-Electro-Mechanical resonator based on a Carbon Nanotube-Array-Suspended-Gate-Field-Effect-Transistor (CNT-SGFET). A dense array of single-walled CNT aligned by ac-dielectrophoresis technique forms the suspended gate electrode of a conventional silicon based FET. Resonance frequency of 120 MHz is reported. An equivalent electrical model has been developed for the resonator.