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Simulation and realization of an active metamateial cell are presented.This metamaterial cell has a power loss due to resistance in the coils.This paper presents a new nanometer negative resistance MOSFET (NR-MOSFET), which is used as a controllable negative resistance to compensate for the nanometer metamaterial losses.The negative resistance was about −320 Ω.A form of a lumped circuit model with active and passive resonance is presented.A negative real part of the refractive index exists in a band width from 1.11 GHz to 1.22 GHz. This model can be used as a core cell for mobile communication smart antenna.

SIMULATION AND REALIZATION OF AN ACTIVE METAMATERIAL CELL FOR GSM/UMTS