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metal

Conductor material

    Description

    example

    m = metal(material) returns the metal used as a conductor in the antenna elements. You can specify a material from the MetalCatalog. The default value for material is perfect electric conductor (PEC).

    example

    m = metal(Name,Value) returns the metal, based on the properties specified by one or more Name-Value Pair Arguments.

    Examples

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    Use steel as the as a conductor for a monocone antenna.

    m = metal('Steel')
    m = 
      metal with properties:
    
                Name: 'Steel'
        Conductivity: 6990000
           Thickness: 6.8000e-04
    
    For more materials see catalog
    
    

    Create a monocone antenna using the monocone antenna object.

    ant = monocone('Conductor',m)
    ant = 
      monocone with properties:
    
                    Radii: [5.0000e-04 0.0110 0.0110]
        GroundPlaneRadius: 0.0325
               ConeHeight: 0.0115
                   Height: 0.0250
               FeedHeight: 5.0000e-04
                FeedWidth: 5.0000e-04
                Conductor: [1x1 metal]
                     Tilt: 0
                 TiltAxis: [1 0 0]
                     Load: [1x1 lumpedElement]
    
    

    View the antenna using the show function.

    show(ant)

    Figure contains an axes. The axes with title monocone antenna element contains 4 objects of type patch, surface. These objects represent Steel, feed.

    Create an annealed copper conductor with the conductivity of 5.8001e07 S/m and thickness of 1e-04 m.

    m = metal('Name','Annealed Copper','Conductivity',5.8001e07,'Thickness',1e-04)
    m = 
      metal with properties:
    
                Name: 'Annealed Copper'
        Conductivity: 58001000
           Thickness: 1.0000e-04
    
    For more materials see catalog
    
    

    Create a birdcage antenna using the annealed copper conductor.

    ant = birdcage('Conductor',m)
    ant = 
      birdcage with properties:
    
             NumRungs: 16
           CoilRadius: 0.4000
           CoilHeight: 0.0400
           RungHeight: 0.4600
         ShieldRadius: 0
         ShieldHeight: 0
              Phantom: []
        FeedLocations: [2x3 double]
          FeedVoltage: 1
            FeedPhase: 0
            Conductor: [1x1 metal]
                 Tilt: 0
             TiltAxis: [1 0 0]
                 Load: [1x1 lumpedElement]
    
    

    View the antenna using show function.

    show(ant)

    Figure contains an axes. The axes with title birdcage antenna element contains 4 objects of type patch, surface. These objects represent Annealed Copper, feed.

    Create and visualize the patch microstrip antennas of PEC, copper, silver, and aluminium metal patches.

    ant_patchPEC = patchMicrostrip('Substrate',dielectric('FR4'),'Conductor',metal('PEC'));
    show(ant_patchPEC)

    Figure contains an axes. The axes with title patchMicrostrip antenna element contains 6 objects of type patch, surface. These objects represent PEC, feed, FR4.

    ant_patchCopper = patchMicrostrip('Substrate',dielectric('FR4'),'Conductor',metal('Copper'));
    show(ant_patchCopper)

    Figure contains an axes. The axes with title patchMicrostrip antenna element contains 6 objects of type patch, surface. These objects represent Copper, feed, FR4.

    ant_patchSilver = patchMicrostrip('Substrate',dielectric('FR4'),'Conductor',metal('Silver'));
    show(ant_patchSilver)

    Figure contains an axes. The axes with title patchMicrostrip antenna element contains 6 objects of type patch, surface. These objects represent Silver, feed, FR4.

    ant_patchAluminium = patchMicrostrip('Substrate',dielectric('FR4'),'Conductor',metal('Aluminium'));
    show(ant_patchAluminium)

    Figure contains an axes. The axes with title patchMicrostrip antenna element contains 6 objects of type patch, surface. These objects represent Aluminium, feed, FR4.

    Compare the impedance values at a frequency of 1.2 GHz.

    Z_patchPEC = impedance(ant_patchPEC,1.2e09)
    Z_patchPEC = 1.2648 + 17.3928i
    
    Z_patchCopper = impedance(ant_patchCopper,1.2e09)
    Z_patchCopper = 1.3079 + 17.4390i
    
    Z_patchSilver = impedance(ant_patchSilver,1.2e09)
    Z_patchSilver = 1.6619 + 17.4106i
    
    Z_patchAluminium = impedance(ant_patchAluminium,1.2e09)
    Z_patchAluminium = 1.3190 + 17.4509i
    

    Input Arguments

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    Material from the dielectric catalog, specified as a metal from the MetalCatalog. The default material is PEC, which has infinite conductivity and zero thickness.

    Example: 'Iron'

    Data Types: char

    Name-Value Pair Arguments

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

    Example: 'Name','Iron'

    Name of the metal material you want to use as a conductor, specified as the comma-separated pair consisting of 'Name' and a character vector.

    Example: 'Name','Tungsten'

    Data Types: char

    Conductivity of the metal material, specified as a scalar in Siemens per meters(S/m). If you set 'Conductivity' to 'Inf', you must set 'Thickness' to '0'.

    Example: 'Conductivity',4.8e06

    Data Types: double

    Note

    In Antenna Toolbox™, the minimum value of conductivity value is 1e05 S/m.

    Thickness of the metal material along the default z-axis, specified as a scalar in meters.

    Example: 'Thickness',0.26e-6

    Data Types: double

    Note

    In Antenna Toolbox, the upper limit to thickness value is 1e-03 m.

    Output Arguments

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    Conductor metal, returned as a metal object. You can create an antenna using the metal object.

    Introduced in R2021a