In this video we discuss the filter transformation from low pass prototype with R=1 and Wc = 1 to any Zo and any frequency. We also show how to convert low pass filter to high pass filter. The slides of this lecture can be found at:
https://drive.google.com/file/d/1qFLFwIB0_6C0MPUnlLRt1B9lyn0XXUDr/view?usp=sharing