Voltage doubler design

Most voltage doublers use an inductor, but this circuit doesnt need one. I am having some trouble in terms of its functionality and design. In the subsequent discharging phase, the charge switches are off, and the discharge switches close. I used diode-connected native transistors VTH is.

The charge switches let capacitor C charge, and the discharge switches are open.

Voltage doubler design
The switching elements are simple diodes and they are driven to switch state merely by the alternating voltage of the input. Simulators, lumped components, values, and rest. Sparrow Clipart - Clip Art Library.
Voltage doubler design
The circuit consists of only two diodes, two capacitors and an oscillating AC input voltage a PWM waveform could also be used. This simple diode-capacitor pump circuit gives a DC output voltage equal to the peak-to-peak value of the sinusoidal input.
This Allows The Internal Capacitor To Charge. The Voltage Multiplication Circuits shown above, are all designed to give a positive DC output voltage.