[[File:RF99.png|thumb|580px|The RF.Spice schematic of the coupled microstrip bandpass filter.]]
Build your microstrip circuit using four "Coupled Mirostrips" parts with the [[parameters]] specified in the above table. You can access the part from '''Menu > [[Transmission Lines]] > Physical [[Transmission Lines]] > Coupled Microstrips'''. Connect them the four parts in a cascade cascaded fashion as shown in the opposite figurebelow. Run a network analysis of this two-port circuit. Set the start and stop frequency of the sweep to 1GHz and 3GHz, respectively, with a linear step of 10MHz. Generate an amplitude-only, Cartesian graph of the S-[[parameters]]. The graphs of s11- and s21 [[parameters]] are shown in the figure below and agree perfectly with the results of the previous section.