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customAntennaMesh

Create 2-D custom mesh antenna on xy-plane

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Description

The customAntennaMesh object creates an antenna represented by a 2-D custom mesh on the xy-plane. You can provide an arbitrary antenna mesh to the Antenna Toolbox™ and analyze this mesh as a custom antenna for port and field characteristics.

Creation

Description

cmesh = customAntennaMesh(points,triangles) creates a 2-D antenna represented by a custom mesh, based on the specified points and triangles.

example

cmesh = customAntennaMesh(___,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.

Input Arguments

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Points in a custom mesh, specified as a 2-by-N or 3-by-N integer matrix of Cartesian coordinates in meters. N is the number of points. In case you specify a 3xN integer matrix, the Z-coordinate must be zero or a constant value. This value sets the Points property in the custom antenna mesh.

Example: [0 1 0 1;0 1 1 0]

Data Types: double

Triangles in the mesh, specified as a 4-by-M integer matrix. M is the number of triangles. The first three rows are indices to the points matrix and represent the vertices of each triangle. The fourth row is a domain number useful for identifying separate parts of an antenna. This value sets the Triangles property in the custom antenna mesh.

Data Types: double

Properties

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Points in a custom mesh, specified as a 2-by-N or 3-by-N integer matrix of Cartesian coordinates in meters. N is the number of points.

Example: [0.1 0.2 0]

Data Types: double

Triangles in the mesh, specified as a 4-by-M integer matrix. M is the number of triangles.

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. For more information on metal conductor meshing, see Meshing.

Example: metal("Copper");

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
createFeedCreate feed location for custom antenna
currentCurrent distribution on antenna or array surface
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
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

Load a custom planar mesh. Create the antenna and antenna feed. View the custom planar mesh antenna and calculate the impedance at 100 MHz.

load planarmesh.mat;
c = customAntennaMesh(p,t);
show(c)

Figure contains an axes object. The axes object with title Custom Mesh Antenna With Undefined Feed, xlabel x (m), ylabel y (m) contains an object of type patch. This object represents PEC.

createFeed(c,[0.07,0.01],[0.05,0.05]);
Z = impedance(c,100e6)
Z = 
0.5091 +57.2102i

References

[1] Balanis, C.A. Antenna Theory: Analysis and Design. 3rd Ed. New York: Wiley, 2005.

Version History

Introduced in R2015b

See Also

Objects

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