Learn more about RF Toolbox

Analyzing Circuits

After you add your circuits, you can analyze them with RF Tool:

1. Select the component or network you want to analyze in the RF Component List pane of RF Tool. For example, select the LC Bandpass Pi component, as shown in the following figure.

   

2. In the Analysis pane:

   • Enter [1e8:5e6:2e9], the analysis frequency range and step size in hertz, in the Frequency field.

     This value specifies an analysis from 0.1 GHz to 2 GHz in 5 MHz steps.

   • Enter 50, the reference impedance in ohms, in the Reference impedance field.

   

   Note   Alternately, you can specify the Frequency and Reference impedance values as MATLAB workspace variables or as valid MATLAB expressions.

3. Click Analyze.

   The Analysis pane displays a Smith Chart, an XY plot, and a polar plot of the analyzed circuit.

   

4. Select or deselect the S-parameter check boxes at the bottom of each plot to customize the parameters that the plot displays. Use the pull-downs at the top of each plot to customize the plot options.

   The plots automatically update as you change the check box and pull-down options on the GUI.

5. Click Data in the upper-right corner of the Analysis pane to view the data in tabular form. The following figure shows the analysis data for the LC Bandpass Pi component at the frequencies and reference impedance shown in step 2.

   

   Note   The magnitude, in decibels, of S11 is listed in the 20log10[S11] column and the phase, in degrees, of S11 is listed in the <S11 column.

Modifying Component Data

Exporting RF Objects

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