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Microstrip Cross - Junction (Closed Form): MCROSS2

Symbol

Topology

Equivalent Circuit

Parameters

MCROSS2$ is a Microstrip iCell and has no parameters. See “Intelligent Cells (iCells)” for more information.

Name Description Unit Type Default
ID Name Text TL1
W1 Conductor width @ Node 1 Length W[1]
W2 Conductor width @ Node 2 Length W[1]
W3 Conductor width @ Node 3 Length W[1]
W4 Conductor width @ Node 4 Length W[1]
MSUB Substrate definition Text MSUB1[2]

[1] User-modifiable default. Modify by editing under $DEFAULT_VALUES in the default.lpf file in the root installation directory. See the AWR Microwave Office Layout Guide for details.

[2] Modify only if the schematic contains multiple substrates. See “Using Elements With Model Blocks” for details.

Parameter Restrictions and Recommendations

Where Wx is W1, W2, W3, or W4:

  • Error Limits

    • Wx > 0

    • T > 0

    • H > 0

    • Er <= 50

  • Warning Limits

    • 0.02 <= Wx/H <= 8.0

Implementation Details

A junction of four microstrip lines. The reference planes for the junction are the ends of the respective lines; that is, the reference plane at any node is the side of the widest of the lines connected to that node. MSUB indicates the name of the MSUB element to use for substrate characteristics. If blank, a default is used.

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.

References

[1] K. C. Gupta, R. Garg, I. J. Bahl, and P. Bhartia, Microstrip Lines and Slotlines, 2nd ed., Artech House, Mass., 1996.

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