HFSS15: Defining a Regular Antenna Array

A regular antenna array is a finite 2D array geometry of uniformly spaced, equal-amplitude cells with a linear phase shift.

1. Click HFSS or HFSS-IE>Radiation>Antenna Array Setup.

The Antenna Array Setup window appears.

2. Under the Array Type tab, select Regular Array Setup.

3. Click the Regular Array tab.

4. Under First Cell Position, enter the xyz-coordinates where the first cell is placed.

5. Under Directions, define the lattice vectors:

a. To the right of U Vector, enter the vector coordinates in the X, Y, and Z text boxes along which the cells in the U-direction are placed.

b. To the right of V Vector, enter the vector coordinates in the X, Y, and Z text boxes along which the cells in the V-direction are placed.

6. Under Distance Between Cells, enter the distance between cells in the U-direction and the distance between cells in the V-direction in the design units.

7. Under Number of Cells, enter the number of unit cells in the U-direction and the number of unit cells in the V-direction.

8. Under Scan Definition, specify the scan direction in one of the following ways:

• Select Use settings from slave boundary. If the design includes a master/slave set, you can select this to use that scan angle.

• Select Use Custom Scan Angles to directly enter the scan angles in degrees, in the radiation coordinate system in the Theta and Phi text boxes.

• Select Use Differential Phase Shift to enter the phase difference in degrees, between adjacent elements, in the In U direction and In V direction text boxes.

9. Click OK.

The array factor will be applied, using the information you specified, when far fields are calculated.