*Wireless Power Transfer DOI: http://dx.doi.org/10.5772/intechopen.99990*

multiplier with a few stages has less voltage drop between its stages, but it requires higher threshold voltage for all stages to work simultaneously. As a result, when a large number of stages are present, a voltage multiplier becomes more susceptible, whereas when smaller stages are present, it becomes more effective. Therefore, based on the implementation goals, the optimum number of steps should be considered.

The voltage loss across MOSFET devices leads to low efficiency. This is further deteriorated by reverse leakage current. Another major disadvantage of MOSFET based circuits is that as frequency increases, the efficiency decreases. This happens due to increased power losses from the reverse leakage current in the MOSFET.
