patchMicrostripInsetfed

Create regular or AI-based inset-fed microstrip patch antenna

expand all in page

Description

Use the default patchMicrostripInsetfed object to create an inset-fed microstrip patch antenna resonating around 3.03 GHz. The default patch is centered at the origin.

Inset-fed microstrip patch antenna geometry

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

Creation

Syntax

insetpatch = patchMicrostripInsetfed
insetpatch = patchMicrostripInsetfed(PropertyName=Value)

Description

insetpatch = patchMicrostripInsetfed creates an inset-fed microstrip patch antenna centered at the origin with default property values. The default dimensions are chosen for an operating frequency of around 3.03 GHz.

example

insetpatch = patchMicrostripInsetfed(PropertyName=Value) sets properties using one or more name-value arguments. PropertyName is the property name and Value is the corresponding value. You can specify several name-value arguments in any order as PropertyName1=Value1,...,PropertyNameN=ValueN. Properties that you do not specify, retain their default values.

For example, insetpatch = patchMicrostripInsetfed(Length=0.2) creates an inset-fed patch of length 0.2 m.

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

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

  • A patchMicrostripInsetfed type AIAntenna has some common tunable properties with a regular patchMicrostripInsetfed antenna for AI-based analysis. Other properties of the regular patchMicrostripInsetfed 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

expand all

Patch length along x-axis, specified as a scalar in meters. The default length is for an resonant frequency of 4.5 GHz. This property is tunable for patchMicrostripInsetfed type AIAntenna object created using the design function.

Example: 0.2

Data Types: double

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

Example: 0.1

Data Types: double

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

Example: 0.001

Data Types: double

Ground plane length along x-axis, specified as a scalar in meters. Setting 'GroundPlaneLength' to Inf, uses the infinite ground plane technique for antenna analysis.

Example: 120e-3

Data Types: double

Ground plane width along y-axis, specified as a scalar in meters. Setting 'GroundPlaneWidth' to Inf, uses the infinite ground plane technique for antenna analysis.

Example: 120e-3

Data Types: double

Type of dielectric material used as a substrate, specified as a dielectric object. You can choose any dielectric material from the DielectricCatalog or specify a dielectric material of your choice. The substrate dimensions must be equal to the ground plane dimensions. You can set this property only for a regular patchMicrostripInsetfed antenna. For more information on dielectric substrate meshing, see Meshing.

Example: dielectric("FR4")

Signed distance of patch 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.

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.

Example: [0.01 0.01]

Data Types: double

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

Example: 0.1

Data Types: double

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

Example: 0.2

Data Types: double

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

Example: 0.1

Data Types: double

Type of the metal used as a conductor, specified as a metal object. You can choose any metal from the MetalCatalog or specify a metal of your choice. You can set this property only for a regular patchMicrostripInsetfed antenna. 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: 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
designCreate antenna, array, or AI-based antenna resonating at specified frequency
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
meshGenerate and view mesh for antennas, arrays, and custom shapes
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 and array catalog elements using SADEA or TR-SADEA algorithm
patternPlot radiation pattern of antenna, array, or embedded element of 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

collapse all

Open Live Script

Create and view a default inset-fed microstrip patch.

insetpatch = patchMicrostripInsetfed
insetpatch = 
  patchMicrostripInsetfed with properties:

               Length: 0.0300
                Width: 0.0290
               Height: 0.0013
            Substrate: [1×1 dielectric]
    PatchCenterOffset: [0 0]
           FeedOffset: [-0.0300 0]
       StripLineWidth: 1.0000e-03
          NotchLength: 0.0080
           NotchWidth: 0.0030
    GroundPlaneLength: 0.0600
     GroundPlaneWidth: 0.0600
            Conductor: [1×1 metal]
                 Tilt: 0
             TiltAxis: [1 0 0]
                 Load: [1×1 lumpedElement]


show(insetpatch)

Figure contains an axes object. The axes object with title patchMicrostripInsetfed antenna element, xlabel x (mm), ylabel y (mm) contains 4 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 inset-fed microstrip patch antenna at 4.5 GHz and calculate its resonant frequency.

pAI = design(patchMicrostripInsetfed,4.5e9,ForAI=true)
pAI = 
  AIAntenna with properties:

   Antenna Info
               AntennaType: 'patchMicrostripInsetfed'
    InitialDesignFrequency: 4.5000e+09

   Tunable Parameters
                    Length: 0.0300
                     Width: 0.0300
                    Height: 0.0017
            StripLineWidth: 0.0019
               NotchLength: 0.0044
                NotchWidth: 0.0033

Show read-only properties

Vary its notch length and notch width and calculate its resonant frequency. 

pAI.NotchLength = 0.0038;
pAI.NotchWidth = 0.0029;
resonantFrequency(pAI)
ans = 
4.5220e+09

Convert the AIAntenna to a regular inset-fed microstrip patch antenna.

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

               Length: 0.0300
                Width: 0.0300
               Height: 0.0017
            Substrate: [1×1 dielectric]
    PatchCenterOffset: [0 0]
           FeedOffset: [-0.0333 0]
       StripLineWidth: 0.0019
          NotchLength: 0.0038
           NotchWidth: 0.0029
    GroundPlaneLength: 0.0666
     GroundPlaneWidth: 0.0666
            Conductor: [1×1 metal]
                 Tilt: 0
             TiltAxis: [1 0 0]
                 Load: [1×1 lumpedElement]

Version History

Introduced in R2017b

expand all

See Also

Objects

Functions

Topics