RF MODULE

22 | CHAPTER 2: TUTORIAL MODELS
2 Select BLK1 and BLK4 and click the Difference toolbar button on the Draw toolbar.
PHYSICS SETTINGS—BOUNDARY MODE ANALYSIS
Boundary Conditions
1 From the Physics menu, choose Boundary Settings.
2 Select Boundaries 23, 25, and 26, select the Specify material parameters in terms of
ε r , µ r , and σ option button, and then enter 3 in the ε r edit field.
3 Select Boundaries 1–22, and clear the Active in this domain check box.
4 Click OK.
Edge Settings
1 From the Physics menu, choose Edge Settings.
2 Select Edges 32, 34, 36, 46, and 47, then click the Perfect magnetic conductor
button.
3 Select Edges 33, 38, 39, 40, 41, 43, and 44, and click the Perfect electric conductor
button.
4 Click OK.
MESH GENERATION
1 From the Mesh menu, open the Free Mesh Parameters dialog box.
2 From the Predefined mesh sizes list, choose Coarser.
3 Click OK.
4 Click the Initialize Mesh button on the Main toolbar.
COMPUTING THE SOLUTION
It is important that you solve the boundary mode analysis first because it gives the
mode and propagation constant for the numerical port. The boundary mode analysis
is an eigenvalue simulation where the propagation constant is an eigenvalue. The
second step solves a stationary problem for the wave propagation, so you must switch
analysis type between the solver steps. It is also important to store the eigenvalue
before you start the second step, especially if the boundary mode analysis gives several
possible propagation constants (eigenvalues).
1 From the Solve menu, open the Solver Manager dialog box.
2 Click the Solve For tab, and select Boundary Mode Analysis, Hybrid-Mode Waves (rfwb)
from the Solve for variables list.
3 Click OK.