4 Problem 3 Here is a simple small-signal MOSFET model, except that C3 (Cgd) is unrealistically small. Making it exactly zero again causes some numerical problems. 1) Design series-stub, shunt-stub matching networks for the input and output. Using high-Z lines of 5 microns width and low-Z lines of 50 microns width, design matching networks on input and output at 100 GHz signal frequency. 2) Determine the line impedances and velocities using the methods of problem 1, and then compute the Pi-section models. Ignoring the capacitance of the high-Z lines and the inductance of the low-Z lines, draw the resulting lumped LC matching network.