# Padding

Padding defines the minimum distance between the structures and the simulation-domain boundary when Add padding between structure and boundary is enabled.

# Settings

Distance type: Choose how the padding distance is defined.

  • Options:
    • Fraction of wavelength: Define padding through a wavelength-based distance.
    • Absolute distance: Define padding through an absolute distance.

# Fraction of Wavelength

Fraction of wavelength: Minimum distance from the structure to the simulation-domain boundary, expressed as a fraction of wavelength.

  • Type: floating-point number

Frequency reference: Choose whether the wavelength uses the global center frequency or a user-defined frequency.

  • Options:
    • Center: Use the center frequency from Global Settings for Simulation Domain padding.
    • User: Use a user-defined frequency.

Frequency: User-defined frequency value used for the wavelength-based padding distance when Frequency reference is User.

  • Type: floating-point number
  • Unit: Hz, kHz, MHz, GHz (default unit), THz

# Absolute Distance

Absolute distance: Minimum absolute distance from the structure to the simulation-domain boundary.

  • Type: floating-point number
  • Unit: m, mm (default unit), um

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