mesh

Mesh properties of metal or dielectric antenna or array structure

Syntax

mesh(object)

mesh(shape)

mesh(object,Name,Value)

meshdata = mesh(___,Name,Value)

Description

mesh(object) plots the mesh used to analyze antenna or array element.

mesh(shape) plots the mesh for the shapes.

mesh(object,Name,Value) changes and plots the mesh structure of an antenna or array element, using additional options specified by the name-value pairs. You can also determine the number of unknowns from the number of basis functions in the output.

meshdata = mesh(___,Name,Value) returns a mesh structure that specifies the properties used to analyze the antenna or array.

Examples

View Mesh Structure of Antenna

Create and view the mesh structure of a top hat monopole antenna with Maximum edge length of 0.1 m.

h = monopoleTopHat;
i = impedance(h,75e6)

i = 2.5322e+02 + 6.0784e+02i

mesh(h)

m = mesh(h)

m = struct with fields:
     NumTriangles: 152
    NumTetrahedra: 0
         NumBasis: 207
    MaxEdgeLength: 0.4295
         MeshMode: 'auto'

Mesh Microstrip Patch Metal-Dielectric Antenna

Radiation Pattern of Microstrip Patch Antenna

Create a microstrip patch antenna using 'FR4' as the dielectric substrate.

d = dielectric('FR4');
pm = patchMicrostrip('Length',75e-3, 'Width',37e-3,                 ...
        'GroundPlaneLength',120e-3, 'GroundPlaneWidth',120e-3, ...
        'Substrate',d);
show(pm)

Plot the radiation pattern of the antenna at a frequency of 1.67 GHz.

figure
pattern(pm,1.67e9)

Mesh the whole antenna.

figure
mesh(pm)

Mesh only the dielectric surface of the antenna.

figure
mesh(pm,'View','dielectric surface')

Mesh Arbitrary Shape

Create a rectangular and circular shape, intersect them and mesh at a wavelength of 2 m.

r  = antenna.Rectangle;
c  = antenna.Circle; 
p = r&c;
mesh(p,2);

Input Arguments

object — Antenna or array element

object

Antenna or array element, specified as an object.

shape — Shape created using custom elements and shape objects

object handle

Shape created using custom elements and shape objects of Antenna Toolbox, specified as an object handle. You can create the shapes using antenna.Circle, antenna.Polygon, or antenna.Rectangle.

Example: c = antenna.Rectangle; mesh(c)

Name-Value Pair Arguments

Example: ‘MaxEdgeLength’, 0.1

Specify optional comma-separated pairs of Name,Value pair arguments. Name is the argument name and Value is the corresponding value. Name must appear inside single quotes (''). You can specify several name and value pair arguments in any order as Name1, Value1, ..., NameN, ValueN.

'MaxEdgeLength' — Maximum edge length of triangles in mesh

scalar

Maximum edge length of triangles in mesh, specified as a comma-separated pair consisting of 'MaxEdgeLength' and a scalar. All triangles in the mesh have sides less than or equal to the 'MaxEdgeLength' value.

Data Types: double

'MinEdgeLength' — Minimum edge length of triangles in mesh

scalar

Minimum edge length of triangles in mesh, specified as a comma-separated pair consisting of 'MinEdgeLength' and a scalar. All triangles in the mesh have sides less than or equal to the 'MinEdgeLength'.

Note

You can use this property only with the pcbStack object.

Data Types: double

'GrowthRate' — Mesh growth rate

0.7 (default) | scalar

Mesh growth rate, specified as a comma-separated pair consisting of 'GrowthRate' and a scalar. The default value of 0.7 states that the growth rate of the mesh is 70 percent. Growth rate values lie between 0 and 1.

Note

You can use this property only with the pcbStack object.

Data Types: double

'View' — Customize mesh view of antenna or array element

'all' (default) | 'metal' | 'dielectric surface' | 'dielectric volume'

Customize mesh view of antenna or array element, specified as a comma-separated pair consisting of 'View' and 'all', 'metal','dielectric surface', or 'dielectric volume'.

You choose 'dielectric surface' to view the boundary triangle mesh of the dielectric. You choose 'dielectric volume' to view the tetrahedral volume mesh of the dielectric.

Data Types: char