metal

Conductor material

Since R2021a

Syntax

``m = metal(material)``
``m = metal(Name,Value)``

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)`

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)`

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)```

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

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

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

Compare the impedance values at a frequency of 1.2 GHz.

`Z_patchPEC = impedance(ant_patchPEC,1.2e09)`
```Z_patchPEC = 1.4800 + 8.4339i ```
`Z_patchCopper = impedance(ant_patchCopper,1.2e09)`
```Z_patchCopper = 1.5197 + 8.4763i ```
`Z_patchSilver = impedance(ant_patchSilver,1.2e09)`
```Z_patchSilver = 1.8451 + 8.4489i ```
`Z_patchAluminium = impedance(ant_patchAluminium,1.2e09)`
```Z_patchAluminium = 1.5300 + 8.4872i ```

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 Arguments

Specify optional pairs of arguments as `Name1=Value1,...,NameN=ValueN`, where `Name` is the argument name and `Value` is the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Before R2021a, use commas to separate each name and value, and enclose `Name` in quotes.

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.

Version History

Introduced in R2021a