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Microstrip Radiused Corner (Closed Form): MCURVE

Symbol

Topology

Parameters

MCURVE$ is a Microstrip iCell and has no parameters. See “Intelligent Cells (iCells)” for more information.

Name Description Unit Type Default
ID Element ID Text TL1
W Conductor width Length 40 um[1]
ANG Angle of bend Angle 90 Deg[1]
R Radius of curvature to centerline Length 50 um
MSUB Substrate definition Text MSUB[2]

[1] User-modifiable default. Modify by editing under $DEFAULT_VALUES in the default.lpf file in the root installation directory.

[2] If only one MSUB is present in the schematic, this substrate is automatically used. If multiple MSUB substrate definitions are present, the user must specify.

Implementation Details

MSUB indicates the name of the MSUB element to use for substrate characteristics. If blank, a default is used. The reference planes for the nodes are indicated by the dashed lines. The width of the line at both nodes is given by W. The amount of bend is given by ANG.

Layout

This element uses line types to determine its layout. By default, the layout uses the first line type defined in your Layout Process File (LPF). You can change the element to use any of the line types configured in your process:

  1. Select the item in the layout.

  2. Right-click and choose Shape Properties to display the Cell Options dialog box.

  3. Click the Layout tab and select a Line Type.

  4. Click OK to use the new line type in the layout.

See “Cell Options Dialog Box: Layout Tab ” for Cell Options dialog box Layout tab details.

See “The Layout Process File (LPF)” for more information on editing Layout Process Files (LPFs) and to learn about adding or editing line types.

Recommendations for Use

Discontinuity models function most accurately when attached to lines that match their corresponding edges. Directly connecting discontinuity models to one another reduces their accuracy.

Reference

[1] B. Wadell, Transmission Line Design Handbook, p. 297,1991.

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