CST2013: Farfield Plot – Plot Mode

Farfield Plot: Plot Properties Properties Plot Mode

Plot mode and scaling frame 

Plot mode

Directivity: Norm the plot to the total radiated power. See Farfield Overview for more information.

Gain (IEEE): Norm the plot to the total input power. See Farfield Overview for more information.

Realized Gain: gain * (1-Balance^2), includes the impedance mismatch loss.

RCS (m2): Show the radar cross section scaled in square meter. Project length units squared are also available. See Farfield Overview for more information.

RCS (sw): Show the radar cross section scaled in square wavelengths. See Farfield Overview for more information.

E-Field: Show the e-field value in the farfield at the reference distance.

E-pattern: Show the e-field radiation pattern.

H-Field: Show the h-field value in the farfield at the reference distance.

Power pattern: Show the power value in the farfield at the reference distance.

Linear scaling: Check here to get a linear plot.

Inverted IEEE axial ratio: Plot the inverse of the IEEE axial ratio.

Reference distance: Set the radius of the virtual sphere for which the farfield is calculated. Available for plot modes e-field / h-field and power pattern.

Use farfield approximation: If turned off the fields will be calculated without approximation and contain radial components. Please note that switching off the approximation will increase the calculation time. The farfield approximation can only be turned off for the E-Field plot mode and H-Field plot mode without lossy mirror plane.

dBV/m, dBA/m, dBW/m2 / …:  Set here the desired physical unit for both linearly and logarithmically scaled farfields. Maximum = 0 dB / Maximum = 1 normalizes the farfield to the plot maximum.

1D Plot Options: Opens the plot options dialog for polar and cartesian farfields.

Log. range [dB]: Set here the range in dB you want to be plotted. For plot types Cartesian, 2D and 3D, the plotted minimum value will be max-range. For plot type Polar, the plot will be scaled to the next 10 dB step above the maximum (i.e., 20 dB if the maximum is 14 dB). The plot range is automatically extended if the specified range contains only a single data point.

Normalization [dB]: Sets the reference value (in dB) which is scaled to 0 dB.

Use current max.: Sets the current plot maximum as dB scaling reference.

Maximum plot value frame

Select here the type of plot maximum for the farfield plots.

Use automatically determined variable plot maximum: Check here to use an automatically determined plot maximum. The plot maximum is recalculated for each farfield plot type and mode.

Set user defined maximum plot value: Check here to use a fixed plot maximum for all farfield plots.

OK

Stores the current settings and closes the dialog box. Depending on the new settings, a new plot of the farfields will be calculated. The calculation can be aborted by pressing the Abort button.

Apply

Stores the current settings leaving the Farfield Plot tab sheet opened. Depending on the new settings, a new plot of the farfields will be calculated. The calculation can be aborted by pressing the Abort button.

FF View / Preview

Use this button to switch between farfield view and coordinate system preview. The latter hides the farfield and shows only the structure in respect to the defined coordinate system. In addition, Bistatic RCS results visualize the exciting plane wave. Leaving the preview mode with pressing Close restores axes, origin, and mirror plane settings.

Abort

Aborts the current calculation. Note that the last plot has been deleted. You will have to calculate a new plot by making the appropriate settings and pressing the OK or Apply button again.

Close

Closes this dialog box without performing any further action.

Help

Shows this help text.

See also

Farfield Overview, Farfield View, Color Ramp, Farfield Plot

Farfield Plot Dialog Pages: General, View, Axes, Origin, Array, Phase Center, Decoupling Plane