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Create Sierpinski's carpet fractal antenna

The `fractalCarpet`

object creates a Sierpinski's carpet
fractal antenna. These fractal antennas are used in mobile phone and Wi-Fi^{®} communications.

A fractal antenna uses a self-similar design to maximize the length or increase the perimeter of a material that transmits or receives electromagnetic radiation within a given volume or area. The main advantage of fractal antennas is that they are compact, which is an important requirement for small and complex circuits. Fractal antennas also have more input impedance or resistance due to increased length or perimeter.

All fractal antennas are printed structures that are etched on a dielectric substrate.

creates a
Sierpinski’s carpet fractal antenna. The default fractal is centered at the
origin, and the number of iterations is set to 2. The length of the fractal
is for an operating frequency of 5.45 GHz.`ant`

= fractalCarpet

sets properties using one or more name-value pairs. For example,
`ant`

= fractalCarpet(Name,Value)`ant = fractalCarpet('NumIterations',4)`

creates a
Sierpinski's carpet with four iterations.

`show` | Display antenna or array structure; display shape as filled patch |

`axialRatio` | Axial ratio of antenna |

`beamwidth` | Beamwidth of antenna |

`charge` | Charge distribution on metal or dielectric antenna or array surface |

`current` | Current distribution on metal or dielectric antenna or array surface |

`design` | Design prototype antenna or arrays for resonance around specified frequency |

`efficiency` | Radiation efficiency of antenna |

`EHfields` | Electric and magnetic fields of antennas; Embedded electric and magnetic fields of antenna element in arrays |

`impedance` | Input impedance of antenna; scan impedance of array |

`mesh` | Mesh properties of metal or dielectric antenna or array structure |

`meshconfig` | Change mesh mode of antenna structure |

`optimize` | Optimize antenna or array using SADEA optimizer |

`pattern` | Radiation pattern and phase of antenna or array; Embedded pattern of antenna element in array |

`patternAzimuth` | Azimuth pattern of antenna or array |

`patternElevation` | Elevation pattern of antenna or array |

`rcs` | Calculate and plot radar cross section (RCS) of platform, antenna, or array |

`returnLoss` | Return loss of antenna; scan return loss of array |

`sparameters` | Calculate S-parameter for antenna and antenna array objects |

`vswr` | Voltage standing wave ratio of antenna |