Hello, I have a voltage regulator which have two massive decoupling networks connected to it.
I know that these netorkd suppose to filter out noise.
I tried to simulate the right network as shown below in AC simulation however as you can seeinput is connectoed to output.
Where did i go wrong simulating the responce of the decoupling network?
Thanks.

 

If you are using ideal voltage sources in the sim there shouldn't be any noise to filter out.
Try using non-ideal components (i.e. with some finite resistance, parasitic capacitance or inductance, noise added).

 

You can be oriented on such diagram: