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We propose and characterize graphene quantum capacitors, tunable with voltage by the control of their charge density, for tunable LC tanks as essential building blocks for Radio-Frequency (RF) functions in densely integrated circuits. We fabricate and investigate their performance in RF, and we demonstrate quantum capacitances, Cq, in the range of pF with a tuning range of >1.3∶1 within 1.25 V,...
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