PMCMedium

PMCMedium represents a perfect magnetic conductor.

This object corresponds to tidy3d.PMCMedium (opens new window).

Field Behavior

At a PMC surface:

$E_t \ne 0,\quad E_n = 0,\quad H_t = 0,\quad H_n \ne 0$

The electric field is tangential to the PMC surface, while the magnetic field is normal to the surface.

NOTE

PMC is often described as a magnetic wall: near the surface, $\mathbf{E}$ is tangential to the wall and $\mathbf{H}$ is normal to the wall.

Name

name: Optional unique name for the medium.

Type

type: Medium model used by this material entry.

• Options: PMCMedium

Color

color: Display color used for the medium in the GUI.

• Type: color
• Default: automatically assigned by the GUI

Advanced

set_from_global_frequency: Toggle whether the frequency range is set from the Global Settings frequency range.

• Options:
  • True: Use the global frequency range and disable manual frequency range inputs.
  • False: Manually set frequency_range.

frequency_range: Optional range of validity for the medium.

• Type: two float numbers
• Unit: Hz, kHz, MHz, GHz, THz, or other available frequency unit
• Default: None

allow_gain: Toggle whether the medium is allowed to be active.

• Options: True/False
• Default: False

NOTE

Use PMCMedium when a perfect magnetic conductor boundary-like material is needed in the model. For a perfect electric conductor, use PECMedium.