I’m trying to get a feel for how to simulate some passive LC filter circuits… the long-term plan is to design some filters to use with an RTL-SDRv3 dongle in direct-sampling mode which has a Nyquist frequency of 14.4MHz.
As a first step I thought I’d try to simulate something that would put a notch at around 14.4MHz (in hindsight, probably not the holy grail I’m after, but let’s just run with it for the sake of a simulation exercise).
This is the circuit, and its simulation:
This is both good and bad. Good in that it’s built into the schematic capture package and produces a nice looking graph. BUT there’s no grid showing the variances in frequency. I can guess the big notch at the bottom is at 14.4MHz, but where are those two peaks? I have no clue.
Is there a way to make it plot steps X axis which show finer graduations than what is “standard”?