Andrew Birkett's blog

My 2019-era Dell laptop died recently, a few days after I’d replaced the battery.

For variety, I switched from SageMath to Sympy since Sympy is a small more focused package.

Using Sagemath for electronics is nice because it forces you to be explicit about your assumptions and calculations.

This time we used Sagemath to model an LC bandpass filter, centered on 100MHz, and calculate the insertion loss in dB at various frequencies.

I entered this particular rabbithole with a desire to understand how the various kinds of passive filters work.