Surface-Potential-Based Metal-Oxide-Silicon-Varactor Model for RF Applications
2007
We have developed a surface-potential-based metal–oxide–silicon (MOS)-varactor model valid for RF applications up to 200 GHz. The model enables the calculation of the MOS-varactor capacitance seamlessly from the depletion region to the accumulation region and explicitly considers the carrier-response delay causing a non-quasi-static (NQS) effect. It has been observed that capacitance reduction due to this non-quasi-static effect limits the MOS-varactor application to an RF regime.
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