If you plot a larger range you’ll see an HPF response – I plotted from 100 MHz to 5 GHz. Still, the cutoff frequency seems to be wrong (around 1.2 GHz), and the passband ripple seems a little high.
If you plot a larger range you’ll see an HPF response – I plotted from 100 MHz to 5 GHz. Still, the cutoff frequency seems to be wrong (around 1.2 GHz), and the passband ripple seems a little high.