How to design a Voltage Doubler Circuit and simulation in ADS and then match impedanc

[thelement01]

How do I do simulations and design of a voltage doubler? And then go on to match the impedance.

 

[BradtheRad]

What have you tried so far?

What has or has not worked for you?

Do you have a schematic of a voltage doubler which you wish to test in simulation?

Are you interested in one that is supplied by AC? Or pulsed DC? Sine waves or square waves?

In general (and if components could be ideal), the greater the Farad value of the capacitors, the greater the load you can power.

In general (and if components could be ideal), the higher your frequency of operation, the greater the load you can power.

In hopes to aid in understanding, I have a Youtube video which shows animated simulations of a bridge (Greinacher) voltage doubler. It depicts capacitors charging and discharging. It depicts current bundles travelling through wires.

www.youtube.com/watch?v=qTS26qfGa30

 

[thelement01]

What have you tried so far?

What has or has not worked for you?

Do you have a schematic of a voltage doubler which you wish to test in simulation?

Are you interested in one that is supplied by AC? Or pulsed DC? Sine waves or square waves?


I'm working on something along the lines of this schematic : https://www.indiabix.com/electronics-circuits/voltage-doubler/

And the Capacitance would be in 100pF and an AC supply, sine waves. How would I go about doing the simulation?

 

[BradtheRad]

It's a demo of Falstad's animated simulator. The voltage doubler is a bridge (or Greinacher) type.

It has a caption saying 'Start simulation' but clicking it brings up an error message. I guess it omits a necessary step.

Try going to the link below. You'll see a long list of circuits. Scroll 1/3 down the page, and you'll see 'Voltage Doubler'. Clicking that will run the simulation. (Click Allow to load the Java applet.)

https://www.falstad.com/circuit/e-index.html

There is also a tripler and quadrupler.

You can alter values by right-clicking a component, and choosing Edit. This will bring up an edit window.

 

[thelement01]

Let me be a bit clear here. That is an example schematic that I will be using to work in ADS. I want to know how I can simulate that in ADS using a schematic roughly the same as the one in the website.

a) I want to know whether I should be using HB or Transient or S parameter simulation to find out the output voltage just like the demo is showing.

b)I also want to impedance match that schematic design. How would I go about doing it?

 

[BradtheRad]

Let me be a bit clear here. That is an example schematic that I will be using to work in ADS. I want to know how I can simulate that in ADS using a schematic roughly the same as the one in the website.

a) I want to know whether I should be using HB or Transient or S parameter simulation to find out the output voltage just like the demo is showing.

Sorry, can't be of much use regarding ADS.

b)I also want to impedance match that schematic design. How would I go about doing it?

This is a tough one.
The effective impedance has to do with...
capacitive reactance... (1) at the supply frequency... (2) and in series with known or unknown resistance.

There are multiple capacitors.

Their charging/discharging action is greatest when the load is heavy, and at startup.
It is least with no load attached.

These are the clues as to what steps will solve the question.

Incidentally, the Greinacher doubler is really a combination of two half-wave power supplies (one at positive polarity, the other negative). This might make it easier to solve for impedance.