When I try to use PSS to simulate a mixer with LO=2GHz, I have some questions about the setup:
(1)I am using "shooting" engine, the fundamental tone is 2GHz. I guess what the "2GHz" tells the simulator is to find a solution x that satisfies KCL & KVL as well as the solution x has to be periodic in 2GHz. And the way it finds x is try to make smart guess of the initial condition x(0) such that x(0)=x(1/2GHz). Is that correct?

(2)Then I also have to setup "number of harmonics". I do not quite understand how this information is used in PSS. Suppose I set it to be 10, then what it does is that try to fit the solution x from the "shooting" method (obtained in (1)) by weighted sum of 2G,4G,....,20GHz sine waves. Is that correct?

(3)Then the fitting from (2) can be used in a "harmonic balance" fashion to do the next step analysis, for example PAC. Is this correct?

Thanks in advance for your kind feedback!