HFSS15: Specifying Frequency Points with a Linear Step Size

1. In the Edit Sweep dialog box, click Linear Step in the Type pull-down list.

2. In the Start text box, type the starting frequency of the frequency sweep.

HFSS solves the solution beginning with the frequency entered in the Start box and ending with the frequency entered in the Stop box. For Fast and Interpolating sweeps, setting the initial value to 0 enables the DC Extrapolation option.

3. In the Stop text box, type the ending frequency of the frequency sweep.

4. In the Step Size box, type the difference between frequency points.

HFSS will solve the frequency point at each step in the specified frequency range, including the start and stop frequencies.

For example, specifying 10 for the start frequency, 20 for the stop frequency, and 2.5 for the step size for a Discrete sweep instructs HFSS to compute a solution for frequencies of 10, 12.5, 15, 17.5, and 20.

To view a table of the frequencies and count, click the Display button. If the list of frequencies is longer than the visible display, you can use a scroll bar to view the list to the end of the count.

5. For Fast sweeps, select Save Fields if you want to save the calculated 3D field solutions associated with all port modes at the chosen frequencies.

For Discrete sweeps, select Save Fields (All Frequencies) if you want to save the calculated 3D field solutions associated with all port modes at the chosen frequencies.

If want to save the fields for just one or a few Discrete sweep frequencies, click the Display button to show a table of frequencies, and select Single Points from the Type pull-down list. This disables the Save Fields checkbox for the entire sweep, and adds a Save Fields column with a checkbox for each frequency. You can select the Save Fields check box for the desired frequency, or click the Save Fields column header to check or uncheck all frequencies.

For Discrete sweeps, HFSS always solves the frequencies from highest to lowest.