Hi,
I'm trying to match the input of a LPF to 50ohms over a 75MHz range of frequencies. Using a network analyzer I've plotted the S11 parameter over this frequency range, in order to determine the proper matching network. The problem I'm encountering is that the  impedance varies widely over my frequency range, making it seemingly impossible to closely match my circuit to 50 ohms at all of my frequencies of interest (see attached plot).
So the question: how do I make it so that my input impedance doesn't vary so much over my frequency range, so i can match it to 50 ohms?
Any help will be much appreciated  :)

Thanks for the reply Vivek,
It's actually in the 900MHz band, so resistors aren't really an option. I've tried using narrower traces to move the points along the resistive lines, but that only works to a certain degree.