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patchMicrostripTriangular

Create triangular microstrip patch antenna

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Description

Use thepatchMicrostripTriangularobject to create a triangular microstrip patch antenna. The default patch is centered at the origin. By default, the dimensions are chosen for an operating frequency of 15 GHz. If you use a Teflon substrate, the default operating frequency is at 12.5 GHz.

Creation

Syntax

trianglepatch = patchMicrostripTriangular
trianglepatch = patchMicrostripTriangular(Name,Value)

Description

example

trianglepatch = patchMicrostripTriangularcreates a triangular microstrip patch antenna.

example

trianglepatch = patchMicrostripTriangular(Name,Value)sets properties using one or more name-value pairs. For example,trianglepatch = patchMicrostripTriangular('Side',0.2)creates a triangular microstrip patch with a side length of 0.2 m. Enclose each property name in quotes.

Properties

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三角形的边长,指定为一个年代calar in meters or a two or three-element vector with each element unit in meters.

  • Equilateral triangle -Sideproperty value is a scalar. All three sides of the triangle are equal.

  • Isosceles triangle -Sideproperty value is a two-element vector. The first value specifies the base of the triangle along thex-axis. The second value specifies the other two sides of the triangle.

  • Scalene triangle -Sideproperty value is a three-element vector. The first value specifies the base of the triangle along thex-axis. The remaining two values specify the other two sides of the triangle.

Example:'Side',0.2

Example:trianglepatch.Side = [0.2,0.3,0.4]where the first value is the base of the scalene triangle along the x-axis.

Data Types:double

Patch height above ground alongz-axis, specified as a scalar in meters.

Example:'Height',0.2

Example:trianglepatch.Height = 0.002

Data Types:double

Ground plane length alongx-axis, specified as a scalar in meters.

Example:'GroundPlaneLength',120e-3

Example:trianglepatch.GroundPlaneLength = 120e-3

Data Types:double

Ground plane width alongy-axis, specified as a scalar in meters.

Example:'GroundPlaneWidth',120e-3

Example:trianglepatch.GroundPlaneWidth = 120e-3

Data Types:double

Signed distance of patch from origin, specified as a two-element real vector with each element unit in meters. Use this property to adjust the location of the patch relative to the ground plane. Distances are measured along the length and width of the ground plane.

Example:'PatchCenterOffset',[0.01 0.01]

Example:trianglepatch.PatchCenterOffset = [0.01 0.01]

Data Types:double

Signed distance of feed from origin, specified as a two-element real vector with each element unit in meters. Use this property to adjust the location of the feedpoint relative to the ground plane and patch. Distances are measured along the length and width of the ground plane.

Example:'FeedOffset',[0.01 0.01]

Example:trianglepatch.FeedOffset = [0.01 0.01]

Data Types:double

Feed diameter, specified as a scalar in meters.

Example:'FeedDiameter',0.0600

Example:trianglepatch.FeedDiameter = 0.0600

Data Types:double

Type of the metal used as a conductor, specified as a metal material object. You can choose any metal from theMetalCatalogor specify a metal of your choice. For more information, seemetal. For more information on metal conductor meshing, seeMeshing.

Example:m = metal('Copper'); 'Conductor',m

Example:m = metal('Copper'); ant.Conductor = m

Type of dielectric material used as a substrate, specified as a dielectric material object. You can choose any material from theDielectricCatalogor use your own dielectric material. For more information, seedielectric. For more information on dielectric substrate meshing, seeMeshing.

Note

The substrate dimensions must be lesser than the ground plane dimensions.

Example:d = dielectric('FR4'); 'Substrate',d

Example:d = dielectric('FR4'); ant.Substrate = d

Lumped elements added to the antenna feed, specified as alumpedElementobject. You can add a load anywhere on the surface of the antenna. By default, the load is at the feed. For more information, seelumpedElement.

Example:'Load',lumpedElement, wherelumpedElementis load added to the antenna feed.

Example:ant.Load = lumpedElement('Impedance',75)

Tilt angle of the antenna, specified as a scalar or vector with each element unit in degrees. For more information, seeRotate Antennas and Arrays.

Example:'Tilt',90

Example:ant.Tilt = 90

Example:'Tilt',[90 90],'TiltAxis',[0 1 0;0 1 1]tilts the antenna at 90 degrees about the two axes defined by the vectors.

Note

ThewireStackantenna object only accepts the dot method to change its properties.

Data Types:double

Tilt axis of the antenna, specified as:

  • 三元素的笛卡尔坐标向量eters. In this case, each coordinate in the vector starts at the origin and lies along the specified points on the X-, Y-, and Z-axes.

  • Two points in space, each specified as three-element vectors of Cartesian coordinates. In this case, the antenna rotates around the line joining the two points in space.

  • A string input describing simple rotations around one of the principal axes, 'X', 'Y', or 'Z'.

For more information, seeRotate Antennas and Arrays.

Example:'TiltAxis',[0 1 0]

Example:'TiltAxis',[0 0 0;0 1 0]

Example:ant.TiltAxis = 'Z'

Note

ThewireStackantenna object only accepts the dot method to change its properties.

Data Types:double

Object Functions

show Display antenna or array structure; display shape as filled patch
axialRatio Axial ratio of antenna
beamwidth Beamwidth of antenna
charge Charge distribution on metal or dielectric antenna or array surface
current Current distribution on metal or dielectric antenna or array surface
design Design prototype antenna or arrays for resonance around specified frequency
efficiency Radiation efficiency of antenna
EHfields Electric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays
impedance Input impedance of antenna; scan impedance of array
mesh Mesh properties of metal or dielectric antenna or array structure
meshconfig Change mesh mode of antenna structure
optimize Optimize antenna or array using SADEA optimizer
pattern Radiation pattern and phase of antenna or array; Embedded pattern of antenna element in array
patternAzimuth Azimuth pattern of antenna or array
patternElevation Elevation pattern of antenna or array
rcs Calculate and plot radar cross section (RCS) of platform, antenna, or array
returnLoss Return loss of antenna; scan return loss of array
sparameters Calculate S-parameter for antenna and antenna array objects
vswr Voltage standing wave ratio of antenna

Examples

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Open Live Script

Create and view a default triangular microstrip patch.

p = patchMicrostripTriangular
p = patchMicrostripTriangular属性:Side: 0.0102 Height: 0.0016 Substrate: [1x1 dielectric] GroundPlaneLength: 0.0120 GroundPlaneWidth: 0.0120 PatchCenterOffset: [0 0] FeedOffset: [0 5.4173e-04] FeedDiameter: 2.5000e-04 Conductor: [1x1 metal] Tilt: 0 TiltAxis: [1 0 0] Load: [1x1 lumpedElement]
show(p)

Figure contains an axes object. The axes object with title patchMicrostripTriangular antenna element contains 5 objects of type patch, surface. These objects represent PEC, feed.

Plot the radiation pattern at 15 GHz.

pattern(p,15e9)

Figure contains an axes object and other objects of type uicontrol. The axes object contains 5 objects of type patch, surface.

Open Live Script

Create different types of triangles to use in the patch.

Equilateral Triangle

Create an equilateral triangle patch of side 7.2 mm.

ant = patchMicrostripTriangular('Side',7.2e-3); show(ant);

Figure contains an axes object. The axes object with title patchMicrostripTriangular antenna element contains 5 objects of type patch, surface. These objects represent PEC, feed.

Isosceles Triangle

Create an isosceles triangular patch antenna with sides using the following dimensions: 5 mm and 7.2 mm.

ant = patchMicrostripTriangular('Side',[5e-3,7.2e-3]); show(ant);

Figure contains an axes object. The axes object with title patchMicrostripTriangular antenna element contains 5 objects of type patch, surface. These objects represent PEC, feed.

In the above figure, you will see that the first value of the side is chosen as the base of the triangle.

Scalene Triangle

Create a scalene triangular patch antenna with side using the following dimensions: 8 mm, 5 mm, and 4 mm.

ant = patchMicrostripTriangular('Side',[8e-3, 6e-3, 5e-3]); show(ant);

Figure contains an axes object. The axes object with title patchMicrostripTriangular antenna element contains 5 objects of type patch, surface. These objects represent PEC, feed.

In the above figure, you will see that the first value of the side is chosen as the base of the triangle.


                     

                    

                   

                  

                 

                

               

              

              

               
               
              

              

               

                
                

                 

                  

                   

                    

                     Open Live Script
                    

                   

                  

                  
Create and view a triangular microstrip patch using Teflon substrate.

                  

                   

                    

                     
d = dielectric('Teflon'); p = patchMicrostripTriangular('Substrate',d); show(p)

                    

                   

                  

                  

                   

                    
Figure contains an axes object. The axes object with title patchMicrostripTriangular antenna element contains 6 objects of type patch, surface. These objects represent PEC, feed, Teflon.

                   

                  

                  
Plot the radiation pattern of the antenna.

                  

                   

                    

                     
pattern(p,12.5e6)

                    

                   

                  

                  

                   

                    
Figure contains an axes object and other objects of type uicontrol. The axes object contains 6 objects of type patch, surface. This object represents Teflon.

                   

                  

                  

                 

                

               

              

              

               
               
              

             

            

            

             
Version History

            

            Introduced in R2018a
            

             
See Also

             
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