1 ECE 145A and 218A. Transmission-line properties, impedance-matching exercises Problem #1 This is a circuit file to study a transmission line. The 2 resistors are included to allow easy disconnection of port 2 without causing numerical problems in the simulator. MSUB defines the microstrip substrate; H is the dielectric thickness, Er its constant, and T the metal thickness. I've cheated and made the metal conductivity very high, so as to minimize skin loss. Please simulate S11, plot on a Smith chart, and from the frequencies at which the line is multiples of a quarter-wavelength, determine the line Zo. Make R1 zero, and R2 1GOhm (open ckt line), simulate S11, and plot Z11 vs frequency. From the frequenies of the poles (singularities) and zeros, determine the wave velocity.