Custom Radiation Patterns

In addition to the standard radiation patterns, if you know the characteristics of your antenna, you can define your own. To do this click the button next to the Radiation pattern drop-down list. This will display the Antenna Radiation Patterns dialog.

At the bottom of the dialog, there are two charts. If you click on a particular radiation pattern in the list, the charts will change to show charts for the selected pattern. Both charts show the variation in gain with off-axis angle. The left-hand chart shows a polar plot with gain measured from the centre outward and off-axis angle measured as an angle from the vertical. The right-hand chart shows a standard line graph with gain plotted on the y-axis against off-axis angle on the x-axis.

There are two types of radiation pattern:

• a mask defined by an Equation
• a mask defined by a Gain Table.