Main Content

traceCross

Create cross-shaped trace

Description

Use the traceCross object to create a cross-shaped trace on the X-Y plane.

Note

This shape object supports behavioral modeling. For more information, see Behavioral Models.

Creation

Description

example

trace = traceCross creates a cross-shaped trace with default properties on the X-Y plane.

trace = traceCross(Name=Value) sets Properties using one or more name-value arguments. For example, traceCross(ReferencePoint=[1 1]) creates a cross-shaped trace at the reference point [1 1]. Properties not specified retain their default values.

Properties

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Name of the cross-shaped trace, specified as a character vector or a string scalar.

Example: trace = traceCross(Name="traceCrossShape")

Data Types: char | string

Reference point for the cross-shaped trace in Cartesian coordinates, specified as a two-element vector.

Example: trace = traceCross(ReferencePoint=[1 1])

Data Types: double

Length of the cross-shaped trace in meters, specified as a two-element vector of positive elements.

Example: trace = traceCross(Length=[0.0800 0.0400])

Data Types: double

Width of the cross-shaped trace in meters, specified as a two-element vector of positive elements.

Example: trace = traceCross(Width=[0.005 0.005])

Data Types: double

Offset along the X and Y direction in meters, specified as a two-element vector.

Example: trace = traceCross(Offset=[1 1])

Data Types: double

Object Functions

addBoolean unite operation on two RF PCB shapes
andShape1 & Shape2 for RF PCB shapes
areaCalculate area of RF PCB shape in square meters
intersectBoolean intersection operation on two RF PCB shapes
meshChange and view mesh properties of metal or dielectric in PCB component
minusShape1 - Shape2 for RF PCB shapes
plusShape1 + Shape2 for RF PCB shapes
rotateRotate RF PCB shape about defined axis
rotateXRotate RF PCB shape about x-axis
rotateYRotate RF PCB shape about y-axis and angle
rotateZRotate RF PCB shape about z-axis
subtractBoolean subtraction operation on two RF PCB shapes
scaleChange size of RF PCB shape by fixed amount
showDisplay PCB component structure or PCB shape
translateMove RF PCB shape to new location

Examples

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Create a cross-shaped trace with default properties.

trace = traceCross
trace = 
  traceCross with properties:

              Name: 'mytraceCross'
    ReferencePoint: [0 0]
            Length: [0.0100 0.0100]
             Width: [0.0020 0.0020]
            Offset: [0 0]

View the trace.

show(trace)

Figure contains an axes object. The axes object contains 2 objects of type patch. This object represents PEC.

Design a microstrip transmission line at 3 GHz for FR4 substrate.

d = dielectric('FR4');
d.LossTangent = 0;
m = design(microstripLine('Substrate',d),3e9,'Z0',75,...
    'LineLength',0.5);

Create a microstrip cross.

layer2d = traceCross('Length',[m.Length m.Length], ...
    'Width',[m.Width m.Width]);

Convert the cross trace to a PCB component.

robj = pcbComponent(layer2d);
robj.BoardThickness = m.Substrate.Thickness;
robj.Layers{2} = m.Substrate;
show(robj)

Figure contains an axes object. The axes object with title pcbComponent element contains 9 objects of type patch, surface. These objects represent PEC, feed, FR4.

Define frequency points to calculate the s-parameters.

freq = (1:3:40)*100e6;

Calculate the s-parameters of the cross trace using the behavioral model.

Sckt = sparameters(robj,freq,'Behavioral',true);
Warning: Behavioral model is valid only when EpsilonR is 9.9.

Calculate the s-parameters of the cross trace using the electromagnetic solver.

Sem = sparameters(robj,freq);

References:

  1. Ramesh Garg & I. J. Bahl (1978) Microstrip discontinuities, International Journal of Electronics, 45:1, 81-87, DOI: 10.1080/00207217808900883

  2. Wadell, Brian C. Transmission Line Design Handbook. The Artech House Microwave Library. Boston: Artech House, 1991.

Version History

Introduced in R2021b