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Run a Network Analysis Test of your simple two-port RF circuit. {| border="0"|-| valign="top"||-{| class="wikitable"|-! scope="row"| Start Frequency| 500Meg|-! scope="row"| Stop Frequency| 1500Meg|-! scope="row"| Steps/Interval| 10Meg|-! scope="row"| Interval Type| Linear|-! scope="row"| Parameter Set| S|-! scope="row"| Graph Type| Cartesian (Amp-Phase) with Decibels |} Set the start and stop frequencies of the sweep to 500MHz and 1500MHz, respectively, with a linear frequency step size of 10MHz. Choose "S" [[parameters]] on a Cartesian graph with both amplitude and phase and a dB scale. The figure below shows the S-parameter results with magnitudes in dB and phases in degrees. Use the tracking crosshairs of the graph window to read the value of |s21| at 1GHz. The reading at the bottom of the screen shows a value of 12.442dB, which corresponds to 4.187 as you can see from the highlighted row in the S-parameter table of the BJT's property dialog.
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