patchMicrostripHnotch

H-shaped microstrip patch antenna

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Description

Use the patchMicrostripHnotch object to create an H-shaped microstrip patch antenna. The default patch is centered at the origin with the feedpoint along the length. By default, the dimensions are chosen for an operating frequency of 3.49 GHz for air or 2.61 GHz for Teflon.

Creation

Syntax

ant = patchMicrostripHnotch
ant = patchMicrostripHnotch(Name,Value)

Description

example

ant = patchMicrostripHnotch creates an H-shaped microstrip patch antenna.

example

ant = patchMicrostripHnotch(Name,Value) sets properties using one or more name-value pairs. For example, ant = patchMicrostripHnotch('Width',0.2) creates a microstrip H-patch with a patch width of 0.2 m. Enclose each property name in quotes.

Properties

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

Example: 'Length',0.0450

Example: ant.Length = 0.0450

Data Types: double

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

Example: 'Width',0.0500

Example: ant.Width = 0.0500

Data Types: double

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

Example: 'NotchLength',0.0200

Example: ant.NotchLength = 0.0200

Data Types: double

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

Example: 'NotchWidth',0.00600

Example: ant.NotchWidth = 0.00600

Data Types: double

Patch height above the ground plane along the Z-axis, specified as a scalar in meters.

Example: 'Height',0.00500

Example: ant.Height = 0.00500

Data Types: double

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

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

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

Data Types: string | char

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

Example: 'GroundPlaneLength',120e-3

Example: ant.GroundPlaneLength = 120e-3

Data Types: double

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

Example: 'GroundPlaneWidth',120e-3

Example: ant.GroundPlaneWidth = 120e-3

Data Types: double

Signed distance of the patch from the origin, specified as a two-element real-valued 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: ant.PatchCenterOffset = [0.01 0.01]

Data Types: double

Signed distance of the feed from the origin, specified as a two-element real-valued 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: ant.FeedOffset = [0.01 0.01]

Data Types: double

Feed diameter, specified as a scalar in meters.

Example: 'FeedDiameter',0.0600

Example: ant.FeedDiameter = 0.0600

Data Types: double

Lumped elements added to the antenna feed, specified as a lumped element object. You can add a load anywhere on the surface of the antenna. By default, the load is at the origin. For more information, see lumpedElement.

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

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, see Rotate 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

The wireStack antenna object only accepts the dot method to change its properties.

Data Types: double

Tilt axis of the antenna, specified as:

  • 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, 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, see Rotate Antennas and Arrays.

Example: 'TiltAxis',[0 1 0]

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

Example: ant.TiltAxis = 'Z'

Note

The wireStack antenna object only accepts the dot method to change its properties.

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 or arrays 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
optimizeOptimize antenna or array using SADEA optimizer
patternRadiation pattern and phase 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

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Open Live Script

Create and view a microstrip patch H-notch with default property values.

ant = patchMicrostripHnotch;
show(ant)

Open Live Script

Create an H-shaped patch with dielectric substrate of permittivity 2.33. 

ant = patchMicrostripHnotch('Substrate',dielectric('EpsilonR',2.33,'LossTangent',0.0012));
show(ant);

See Also

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Topics

Introduced in R2019a

Antenna Toolbox Documentation

Support