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Boxes and waveguides enable you to specify substrate boundaries in the horizontal direction. A box enables you to set boundaries on four sides of the substrate. A waveguide enables you to set boundaries on two sides. These effects are available only when using the Momentum(microwave) simulation mode, and not with the Momemtum RF mode.
1. Choose Momentum-->Box-Waveguide-->Add Box
2. Insert box using one of the following two methods:
A. Position teh mouse and click to define a corner of the box. Move the mouse to the diagonal corner and click.
B. From the layout menu bar choose Insert --> Coordinate Entry and use the Coordinate Entry X and Coordinate Entry Y fields to specify a corner of the box. Click Apply. enter the coordinate of the diagonal corner and click Apply. Click Cancel to dismiss the dialog box.