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patchMicrostripEnotch

Create regular or AI-based probe-fed E-shaped microstrip patch antenna

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Description

Use the default patchMicrostripEnotch object to create a probe-fed E-shaped microstrip patch antenna resonating around 7.2 GHz. The default patch is centered at the origin with the feed point along the length.

You can perform full-wave EM solver based analysis on the regular patchMicrostripEnotch antenna or you can create a patchMicrostripEnotch type AIAntenna and explore the design space to tune the antenna for your application using AI-based analysis.

E-shaped notch microstrip patch antenna

Creation

Syntax

epatch = patchMicrostripEnotch
epatch = patchMicrostripEnotch(Name=Value)

Description

epatch = patchMicrostripEnotch creates an E-shaped notch microstrip patch antenna with default property values. The default dimensions are chosen for an operating frequency of around 7.2 GHz for the air or 5.5 GHz for Teflon substrate.

example

epatch = patchMicrostripEnotch(Name=Value) sets properties using one or more name-value arguments. Name is the property name and Value is the corresponding value. You can specify several name-value arguments in any order as Name1=Value1,...,NameN=ValueN. Properties that you do not specify, retain their default values.

For example, epatch = patchMicrostripEnotch(Width=0.2) creates a microstrip E-patch with a patch width of 0.2 m.

example

  • You can also create a patchMicrostripEnotch antenna resonating at a desired frequency using the design function.

  • You can also create a patchMicrostripEnotch antenna from a microstrip patch type AIAntenna object using the exportAntenna function.

  • A patchMicrostripEnotch type AIAntenna has some common tunable properties with a regular patchMicrostripEnotch antenna for AI-based analysis. Other properties of the regular patchMicrostripEnotch antenna are retained as read-only in its AIAntenna equivalent. To find the upper and lower bounds of the tunable properties, use tunableRanges function.

Properties

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Patch length along x-axis, specified as a scalar in meters. This property is tunable for patchMicrostripEnotch type AIAntenna object created using the design function.

Example: 0.9

Data Types: double

Patch width along y-axis, specified as a scalar in meters. This property is tunable for patchMicrostripEnotch type AIAntenna object created using the design function.

Example: 0.0500

Data Types: double

Patch height above ground plane along z-axis, specified as a scalar in meters. This property is tunable for patchMicrostripEnotch type AIAntenna object created using the design function.

Example: 0.00500

Data Types: double

Notch length on center E-arm along x-axis, specified as a scalar in meters. This property is tunable for patchMicrostripEnotch type AIAntenna object created using the design function.

Example: 0.100

Data Types: double

Notch width on center E-arm along y-axis, specified as a scalar in meters. This property is tunable for patchMicrostripEnotch type AIAntenna object created using the design function.

Example: 0.0600

Data Types: double

Notch length along x-axis, specified as a scalar in meters. This property is tunable for patchMicrostripEnotch type AIAntenna object created using the design function.

Example: 0.0200

Data Types: double

Notch width along y-axis, specified as a scalar in meters. This property is tunable for patchMicrostripEnotch type AIAntenna object created using the design function.

Example: 0.00600

Data Types: double

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

Example: 120e-3

Data Types: double

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

Example: 120e-3

Data Types: double

Signed distance of patch center from origin, specified as a two-element real vector 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: [0.01 0.01]

Data Types: double

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

Example: [0.01 0.01]

Data Types: double

Feed diameter, specified as a positive scalar in meters.

Example: 0.0600

Data Types: double

Type of dielectric material used as a substrate, specified as a dielectric object. The patch resides on this dielectric substrate. For more information, see dielectric. For more information on dielectric substrate meshing, see Meshing.

Note

The substrate dimensions must be equal to the ground plane dimensions.

Example: dielectric("FR4")

Type of the metal used as a conductor, specified as a metal material object. You can choose any metal from the MetalCatalog or specify a metal of your choice. For more information, see metal. For more information on metal conductor meshing, see Meshing.

Example: metal("Copper")

Lumped elements added to the antenna feed, specified as a lumpedElement object. You can add a load anywhere on the surface of the antenna. By default, the load is at the feed.

Example: Load=lumpedElement(Impedance=75)

Example: antenna.Load = lumpedElement(Impedance=75)

Tilt angle of the antenna in degrees, specified as a scalar or vector. For more information, see Rotate Antennas and Arrays.

Example: 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.

Data Types: double

Tilt axis of the antenna, specified as one of these values:

  • Three-element vector of Cartesian coordinates in meters. 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, specified as a 2-by-3 matrix corresponding to two three-element vectors of Cartesian coordinates. In this case, the antenna rotates around the line joining the two points.

  • "x", "y", or "z" to describe a rotation about the x-, y-, or z-axis, respectively.

For more information, see Rotate Antennas and Arrays.

Example: [0 1 0]

Example: [0 0 0;0 1 0]

Example: "Z"

Data Types: double | string

Object Functions

axialRatioCalculate and plot axial ratio of antenna or array
bandwidthCalculate and plot absolute bandwidth of antenna or array
beamwidthBeamwidth of antenna
chargeCharge distribution on antenna or array surface
currentCurrent distribution on antenna or array surface
designDesign prototype antenna or arrays for resonance around specified frequency or create AI-based antenna from antenna catalog objects
efficiencyCalculate and plot radiation efficiency of antenna or array
EHfieldsElectric and magnetic fields of antennas or embedded electric and magnetic fields of antenna element in arrays
feedCurrentCalculate current at feed for antenna or array
impedanceCalculate and plot input impedance of antenna or scan impedance of array
infoDisplay information about antenna, array, or platform
memoryEstimateEstimate memory required to solve antenna or array mesh
meshMesh properties of metal, dielectric antenna, or array structure
meshconfigChange meshing mode of antenna, array, custom antenna, custom array, or custom geometry
msiwriteWrite antenna or array analysis data to MSI planet file
optimizeOptimize antenna or array using SADEA optimizer
patternPlot radiation pattern and phase of antenna or array or embedded pattern of antenna element in array
patternAzimuthAzimuth plane radiation pattern of antenna or array
patternElevationElevation plane radiation pattern of antenna or array
peakRadiationCalculate and mark maximum radiation points of antenna or array on radiation pattern
rcsCalculate and plot monostatic and bistatic radar cross section (RCS) of platform, antenna, or array
resonantFrequencyCalculate and plot resonant frequency of antenna
returnLossCalculate and plot return loss of antenna or scan return loss of array
showDisplay antenna, array structures, shapes, or platform
sparametersCalculate S-parameters for antenna or array
stlwriteWrite mesh information to STL file
vswrCalculate and plot voltage standing wave ratio (VSWR) of antenna or array element

Examples

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Open Live Script

Create and view a default E-shaped patch antenna.

epatch = patchMicrostripEnotch
epatch = 
  patchMicrostripEnotch with properties:

                  Length: 0.0172
                   Width: 0.0200
             NotchLength: 0.0100
              NotchWidth: 1.0000e-03
    CenterArmNotchLength: 0.0028
     CenterArmNotchWidth: 0.0062
                  Height: 0.0032
               Substrate: [1x1 dielectric]
       GroundPlaneLength: 0.0250
        GroundPlaneWidth: 0.0300
       PatchCenterOffset: [0 0]
              FeedOffset: [-0.0034 0]
            FeedDiameter: 0.0013
               Conductor: [1x1 metal]
                    Tilt: 0
                TiltAxis: [1 0 0]
                    Load: [1x1 lumpedElement]


show(epatch)

Figure contains an axes object. The axes object with title patchMicrostripEnotch antenna element, xlabel x (mm), ylabel y (mm) contains 5 objects of type patch, surface. These objects represent PEC, feed.

Open Live Script

Create and view an E-shaped patch with no slot on the center E-arm.

epatch = patchMicrostripEnotch(CenterArmNotchLength=0);
show(epatch)

Figure contains an axes object. The axes object with title patchMicrostripEnotch antenna element, xlabel x (mm), ylabel y (mm) contains 5 objects of type patch, surface. These objects represent PEC, feed.

This example uses:

Open Live Script

This example shows how to create an AI model based E-shaped notch microstrip patch antenna at 6.6 GHz and calculate its resonant frequency.

pAI = design(patchMicrostripEnotch,6.6e9,ForAI=true)
pAI = 
  AIAntenna with properties:

   Antenna Info
               AntennaType: 'patchMicrostripEnotch'
    InitialDesignFrequency: 6.6000e+09

   Tunable Parameters
                    Length: 0.0193
                     Width: 0.0202
                    Height: 0.0032
      CenterArmNotchLength: 0.0028
       CenterArmNotchWidth: 0.0063
               NotchLength: 0.0101
                NotchWidth: 0.0010

Use 'showReadOnlyProperties(pAI)' to show read-only properties

Vary its radius and height and calculate its resonant frequency. 

pAI.NotchLength = 0.0099;
pAI.NotchWidth = 0.00086;
resonantFrequency(pAI)
ans = 
6.5530e+09

Convert the AIAntenna to a regular E-shaped notch microstrip patch antenna.

pmC = exportAntenna(pAI)
pmC = 
  patchMicrostripEnotch with properties:

                  Length: 0.0193
                   Width: 0.0202
             NotchLength: 0.0099
              NotchWidth: 8.6000e-04
    CenterArmNotchLength: 0.0028
     CenterArmNotchWidth: 0.0063
                  Height: 0.0032
               Substrate: [1x1 dielectric]
       GroundPlaneLength: 0.0253
        GroundPlaneWidth: 0.0303
       PatchCenterOffset: [0 0]
              FeedOffset: [-0.0034 0]
            FeedDiameter: 0.0013
               Conductor: [1x1 metal]
                    Tilt: 0
                TiltAxis: [1 0 0]
                    Load: [1x1 lumpedElement]

Version History

Introduced in R2018a

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See Also

Functions

Objects

Topics