Main Content

customAntennaMesh

Create 2-D custom mesh antenna on xy-plane

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

example

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

Input Arguments

expand all

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

expand all

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 in the 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)

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/or plot axial ratio of antenna or array
bandwidthCalculate and/or plot absolute bandwidth of antenna
beamwidthBeamwidth of antenna
chargeCharge distribution on antenna or array surface
createFeedCreate feed location for custom antenna
currentCurrent distribution on antenna or array surface
efficiencyRadiation efficiency of antenna
EHfieldsElectric and magnetic fields of antennas or embedded electric and magnetic fields of antenna element in arrays
impedanceInput 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
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
rcsCalculate and plot monostatic and bistatic radar cross section (RCS) of platform, antenna, or array
resonantFrequencyCalculate and/or plot resonant frequency of antenna
returnLossReturn loss of antenna or scan return loss of array
showDisplay antenna, array structures, shapes, or platform
sparametersCalculate S-parameters for antennas and antenna arrays
vswrVoltage standing wave ratio (VSWR) of antenna or array element

Examples

collapse all

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)

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