RF MODULE

8 In the Swept Mesh Parameter dialog box, select Subdomains 2–4 and 7–9. On the
Element layers page, select the Manual selection of element layers check box and set
the Number of element layers to 8.
9 Click the Mesh Selected button.
10 Click OK to close the Swept Mesh Parameters dialog box.
11 In the Free Mesh Parameters dialog box, click the Global tab, select Normal from the
Predefined mesh sizes list, and click Apply.
12 Click the Custom mesh size option button, then type 0.01 in the Mesh curvature
cutoff edit field.
13 Click the Boundary tab.
14 Select boundaries representing the drill holes and fillets of the connectors. Either
use the technique described for the edges below or select them by number. The
boundary numbers are: 35–40, 42–45, 47–56, 82–85, 87–90, and 130–139.
15 Click the Mesh Selected button.
16 Click the Global tab, then type 2 in the Resolution of narrow regions edit field.
17 Click the Edge tab.
18 Select Edges 190–193, 284, and 330, then type 8e-4 in the Maximum element size
edit field.
The edges listed above are all edges of the square patch in the middle of the
substrate, and there is a technique to select all of them with the mouse. Click the
Go to XY View button on the Camera toolbar. You now see a top view of the patch
antenna. Then click the Orbit/Pan/Zoom button, also on the Camera toolbar. This is
198 | CHAPTER 3: RF AND MICROWAVE MODELS