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patchMicrostripInsetfed

Create inset-fed microstrip patch antenna

Description

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

Creation

Syntax

insetpatch = patchMicrostripInsetfed
insetpatch = patchMicrostripInsetfed(Name,Value)

Description

example

insetpatch = patchMicrostripInsetfed creates an inset-fed microstrip patch antenna centered at the origin.

insetpatch = patchMicrostripInsetfed(Name,Value) sets properties using one or more name-value pair. For example, insetpatch = patchMicrostripInsetfed('Length',0.2) creates an inset-fed patch of length 0.2 m. Enclose each property name in quotes.

Properties

expand all

Patch length along X-axis, specified as a scalar in meters. The default length is for an operating frequency of 4.5 GHz.

Example: 'Length',0.2

Example: insetpatch.Length = 0.2

Data Types: double

Patch width along Y-axis, specified as a scalar in meters.

Example: 'Width',0.1

Example: insetpatch.Width = 0.1

Data Types: double

Patch height along Z-axis, specified as a scalar in meters.

Example: 'Height',0.001

Example: insetpatch.Height = 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: 'GroundPlaneLength',120e-3

Example: insetpatch.GroundPlaneLength = 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: 'GroundPlaneWidth',120e-3

Example: insetpatch.GroundPlaneWidth = 120e-3

Data Types: double

Type of dielectric material used as a substrate, specified as a dielectric material object handle. For more information see, dielectric. For more information on dielectric substrate meshing, see Meshing.

Note

The substrate dimensions must be equal to the groundplane dimensions.

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

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

Signed distance of patch from origin, specified as a two-element real vector with each element units in meters. Use this property to adjust the location of the patch relative to the ground plane.

Example: 'PatchCenterOffset',[0.01 0.01]

Example: insetpatch.PatchCenterOffset = [0.01 0.01]

Data Types: double

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

Example: 'FeedOffset',[0.01 0.01]

Example: insetpatch.FeedOffset = [0.01 0.01]

Data Types: double

Strip line width along Y-axis, specified as a scalar in meters.

Example: 'StripLineWidth',0.1

Example: insetpatch.StripLineWidth = 0.1

Data Types: double

Notch length along X-axis, specified as a scalar in meters.

Example: 'NotchLength',0.2

Example: insetpatch.NotchLength = 0.2

Data Types: double

Notch width along Y-axis, specified as a scalar in meters.

Example: 'NotchWidth',0.1

Example: insetpatch.NotchWidth = 0.1

Data Types: double

Lumped elements added to the antenna feed, specified as a lumped element object handle. For more information, see lumpedElement.

Example: 'Load',lumpedelement. lumpedelement is the object handle for the load created using lumpedElement.

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

Tilt angle of antenna, specified as a scalar or vector with each element unit in degrees.

Example: 'Tilt',90

Example: insetpatch.Tilt = [90 90 0]

Data Types: double

Tilt axis of the antenna, specified as:

  • A three-element vector of Cartesian coordinates in meters. In this case, each vector starts at the origin and lies along the specified points on the X, Y, and Z axis.

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

  • A string input for simple rotations around the principal planes, X, Y, or Z.

For more information see, Rotate Antenna and Arrays.

Example: 'TiltAxis',[0 1 0]

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

Example: insetpatch.TiltAxis = Z

Data Types: double

Object Functions

showDisplay antenna or array structure; Display shape as filled patch
axialRatioAxial ratio of antenna
beamwidthBeamwidth of antenna
chargeCharge distribution on metal or dielectric antenna or array surface
currentCurrent distribution on metal or dielectric antenna or array surface
designDesign prototype antenna for resonance at specified frequency
EHfieldsElectric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays
impedanceInput impedance of antenna; scan impedance of array
meshMesh properties of metal or dielectric antenna or array structure
meshconfigChange mesh mode of antenna structure
patternRadiation pattern of antenna or array; Embedded pattern of antenna element in array
patternAzimuthAzimuth pattern of antenna or array
patternElevationElevation pattern of antenna or array
returnLossReturn loss of antenna; scan return loss of array
sparametersS-parameter object
vswrVoltage standing wave ratio of antenna

Examples

expand all

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
                 Tilt: 0
             TiltAxis: [1 0 0]
                 Load: [1×1 lumpedElement]

show(insetpatch)

Introduced in R2017b

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