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Plotting 2D Far Field Patterns

The radiation pattern can be shown as a 2D rectangular plot by going to Results > Plot Far-Field Pattern > 2D Rectangular Plot in the main menu. This command displays the Radiation Pattern Cut dialog box, Fig. 1, where two types of plots can be produced,

  • Conical plots are obtained with fixed Theta and variable Phi.
  • Vertical plots are obtained with fixed Phi and variable Theta.
Fig. 1: The Radiation Pattern Cut dialog box.

Choose a radiation pattern cut and click the OK button to execute the AN-XY Chart application, Fig. 2, where the radiation pattern is plotted vs. Phi if a conical plot was chosen (for fixed Theta) or vs. Theta if a vertical plot was chosen (for fixed Phi).

Fig. 2: A Radiation Pattern Cut plotted by AN-XY Chart in a rectangular chart.

Go to the Plot menu in AN-XY Chart to plot the total E-field, the E-theta (vertical) and E-phi (horizontal) linearly polarized field components, the E-right and E-left circularly polarized components, the power density, directivity, and gain. In the case of plane wave excitation, the Radar Cross Section (RCS) will be plotted.

The far-field pattern can also be plotted in a 2D polar chart by going to Results > Plot Far-Field Pattern > Polar Plot 1 Slice in the AN-SOF main menu, Fig. 3. In this case, the maximum radiation, beam width, and front-to-rear/back ratios will be shown.

Fig. 3: A radiation pattern cut plotted by AN-Polar.

To plot two slices of a 3D far-field pattern in the same polar plot, go to Results > Plot Far-Field Pattern > Polar Plot 2 Slices in the AN-SOF main menu. A dialog box will be shown to choose the slices. Two vertical, two conical or vertical-conical combinations can be chosen, Fig. 4.

Fig. 4: Two slices of the radiation pattern plotted by AN-Polar.
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