# Global Settings

Global settings define shared frequency and unit values used across the RF GUI.

# Frequency

The frequency controls define the global frequency range and the sampled frequency points used by the RF setup.

frequency input mode: Choose how the frequency range is entered.

  • Options:
    • Center / Bandwidth: Define the range from a center frequency and bandwidth.
    • Min / Max: Define the range from minimum and maximum frequencies.

# Center / Bandwidth

center frequency: Center of the global frequency range.

  • Type: float number
  • Unit: Hz, kHz, MHz, GHz (default unit), THz

frequency bandwidth: Width of the global frequency range.

  • Type: float number
  • Unit: Hz, kHz, MHz, GHz (default unit), THz

# Min / Max

minimum frequency: Lower bound of the global frequency range.

  • Type: float number
  • Unit: Hz, kHz, MHz, GHz (default unit), THz

maximum frequency: Upper bound of the global frequency range.

  • Type: float number
  • Unit: Hz, kHz, MHz, GHz (default unit), THz

# Frequency Points

number of points: Number of generated frequency points.

  • Type: integer
  • Constraint: greater than 0
  • Required field

freqs: Generated frequency points used by RF calculations.

  • Type: list of float numbers
  • Unit: Hz
  • Required field

The generated list maps directly to TerminalComponentModeler.freqs (opens new window) for TCM runs. Mode-solving workflows use the same sampled frequencies for ModeSolver.freqs (opens new window) when a GUI panel solves modes from the global frequency settings.

# Reuse in Other Panels

Several RF GUI panels can read the global frequency settings instead of asking for a local frequency or wavelength value.

  • Frequency-domain monitors: Field Monitor, Flux Monitor, and Directivity Monitor can enable set range from global frequency for their freqs.
  • Run Time: set_from_global_frequency computes manual run_time as 60 / (f_max - f_min).
  • Medium: medium models with a frequency validity range can enable set_from_global_frequency.
  • Simulation Domain: add_padding_based_on_wavelength adds lambda_center / 2 to the simulation size.
  • Grid Specification: set reference from global frequency derives the AutoGrid reference frequency from the global frequency settings.
  • Microwave Mode Specification: mode calculations use the global sampled frequencies when the mode solver is created from the RF GUI setup.

# Units

frequency: Default frequency unit used by frequency fields that follow the global unit.

  • Options: PHz/THz/GHz/MHz/kHz/Hz

dimensions: Default length unit used by dimension fields that follow the global unit.

  • Options: m/mm/um

angle: Default angle unit used by angle fields that follow the global unit.

  • Options: deg/rad

time: Default time unit used by time fields that follow the global unit.

  • Options: s/ms/us/ns/ps/fs

resistance: Default resistance unit used by resistance fields that follow the global unit.

  • Options: Ohm

capacitance: Default capacitance unit used by capacitance fields that follow the global unit.

  • Options: F

inductance: Default inductance unit used by inductance fields that follow the global unit.

  • Options: H

Fields in other panels follow these defaults only when their unit selector uses the corresponding (Global) option. For example, a frequency field set to GHz (Global) changes when frequency changes from GHz to Hz. A field set to the fixed GHz option keeps using GHz when the global frequency unit changes.

Some units are fixed by the RF GUI and are displayed without a selector, such as mass, conductivity, current, and temperature.

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