Parameter extraction of threshold voltage model of BSIM3V3

The threshold model is one of the models of BSIM3V3. The authors have investigated the parameter extraction of the threshold model. Both single-bin and multi-bin algorithms are implemented which avoid the parameter redundancy problem. Refined device schemes are designed to support the group extraction strategy. For the single-bin algorithm, the relative error of the extracted values of the parameters is less than 0.02%.