Boundary condition
Conditions applied at the edge of a modeled region or at an internal surface, such as prescribed fields, impedance, periodicity or radiation. A boundary condition is distinct from an absorbing material volume.
boundary
https://aedt.docs.pyansys.com/version/stable/API/Boundaries.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_modeling.19.069.html
2 documented vocabulary mappings
Ansys HFSS: Boundary objects
narrower · direction to_canonical · scope documentation_group
PyAEDT groups HFSS boundary definitions here; a boundary still needs its actual type and assignment. Documentation-only category mapping; not an executable translation.
https://aedt.docs.pyansys.com/version/stable/API/Boundaries.html
Surface impedance boundary
A surface relation between tangential electric and magnetic fields that models a specified impedance or thin lossy layer.
boundary.impedance
3 documented vocabulary mappings
COMSOL Multiphysics: Impedance Boundary Condition
exact · direction both
SIMULIA CST Studio Suite: Surface Impedance
exact · direction both
Ansys HFSS: Impedance
exact · direction both
Aliases: Impedance Boundary
Open or radiation boundary
A nonreflecting exterior boundary; exact implementations vary by solver.
boundary.open
5 documented vocabulary mappings
SIMULIA CST Studio Suite: Open (add space)
approximate · direction both
Aliases: Open
The native setting couples an open boundary approximation with added domain space.
Ansys HFSS: Radiation
narrower · direction both
Aliases: Radiation Boundary
Radiation is HFSS's first-order absorbing exterior boundary, not every possible open-domain treatment.
openEMS: MUR
FDTD.SetBoundaryCond
narrower · direction both
Aliases: Mur absorbing boundary
Perfect electric conductor
PEC enforces zero tangential electric field and ideal reflection. It is an idealization of a perfect conductor.
boundary.perfect_electric_conductor · PEC, electric wall
9 documented vocabulary mappings
Ansys Lumerical FDTD: Metal
narrower · direction both
COMSOL Multiphysics: Perfect Electric Conductor
exact · direction both
Aliases: PEC
SIMULIA CST Studio Suite: Electric
exact · direction both · scope boundary
Aliases: PEC, Electric Wall
Altair Feko: Perfect Electric Conductor
exact · direction both
Aliases: PEC
Ansys HFSS: Perfect E
exact · direction both
Aliases: PEC
Meep: metal
meep.metal
exact · direction both
Aliases: perfect_electric_conductor
openEMS: PEC
FDTD.SetBoundaryCond
exact · direction both
Remcom Wireless InSite: Perfect electrical conductor (PEC)
exact · direction both
Aliases: PEC
Remcom XFdtd: PEC
exact · direction both
Aliases: Perfect Electric Conductor
Perfect magnetic conductor
PMC enforces zero tangential magnetic field and ideal reflection. It is mainly a symmetry or theoretical boundary.
boundary.perfect_magnetic_conductor · PMC, magnetic wall
5 documented vocabulary mappings
COMSOL Multiphysics: Perfect Magnetic Conductor
exact · direction both
Aliases: PMC
SIMULIA CST Studio Suite: Magnetic
exact · direction both · scope boundary
Aliases: PMC, Magnetic Wall
Altair Feko: Perfect Magnetic Conductor
exact · direction both
Aliases: PMC
Ansys HFSS: Perfect H
exact · direction both
Aliases: PMC
openEMS: PMC
FDTD.SetBoundaryCond
exact · direction both
Periodic boundary pair
A boundary pairing relates fields on opposite faces by a phase or periodicity condition; it is not a generic open boundary.
boundary.periodic · unit cell periodicity, master/slave
9 documented vocabulary mappings
Ansys Lumerical FDTD: Periodic
exact · direction both
Ansys Lumerical FDTD: Bloch
narrower · direction both
Bloch boundaries are periodic boundaries with a phase shift.
COMSOL Multiphysics: Periodic Condition
broader · direction both
Aliases: Floquet periodicity
Periodic Condition also supports continuity, antiperiodicity, and cyclic symmetry; preserve its Type.
SIMULIA CST Studio Suite: Unit Cell
narrower · direction both · scope boundary
Aliases: Periodic
CST Unit Cell boundary settings include scan/phase details beyond generic periodicity.
Altair Feko: Periodic Boundary Condition
exact · direction both
Aliases: PBC
Ansys HFSS: Lattice Pair
narrower · direction both
Aliases: Primary/Secondary, Master/Slave
HFSS periodicity is represented by a paired boundary with lattice/phase semantics.
Meep: k_point
Simulation.k_point
broader · direction both
Aliases: Bloch-periodic boundary
k_point supplies Bloch phase; a zero vector is ordinary periodicity.
openEMS: PBC
FDTD.SetBoundaryCond
exact · direction both
Aliases: Periodic Boundary Condition
MetaClaw WiTwin Adapter: floquet_periodic
lossy · direction to_canonical · scope scene_metadata
This is currently metadata only; the adapter does not enforce the periodic boundary in a numerical solver.
Circuit and network design
A network of interconnected electrical elements and ports, described by voltages, currents and component relationships. Lumped, distributed and field-coupled circuit models have different validity limits.
circuit
https://ansyshelp.ansys.com/public/Views/Secured/Electronics/v242/en/PDFs/FilterSolutions.pdf
https://doc.comsol.com/6.3/doc/com.comsol.help.acdc/acdc_ug_electric_fields.07.020.html
2 documented vocabulary mappings
Frequency-selective filter design
A circuit intended to pass, attenuate or phase-shift selected frequency components. Response family, topology, order, terminations and physical implementation jointly determine its behavior.
circuit.filter
https://ansyshelp.ansys.com/public/Views/Secured/Electronics/v242/en/PDFs/FilterSolutions.pdf
https://doc.comsol.com/6.3/doc/com.comsol.help.models.rf.lumped_element_filter/lumped_element_filter.html
2 documented vocabulary mappings
Passband width
The declared passband width, with a clear absolute or fractional convention.
circuit.filter.bandwidth · filter bandwidth, pass band width
1 documented vocabulary mapping
Nuhertz FilterSolutions: Bandwidth
approximate · direction both
Aliases: Percent Bandwidth
GUI field. Shipped .ftr examples store a percentage constraint (FCon, e.g. 50%) plus a second frequency (F2val); the exact key semantics are undocumented, so no native_path is claimed.
Passband center frequency
The center frequency of a band-centered filter, with explicit units.
circuit.filter.center_frequency · filter center frequency
1 documented vocabulary mapping
Nuhertz FilterSolutions: Center Frequency
approximate · direction both
GUI field. In .ftr files the first frequency slot (F1val) plays the class-dependent role of cutoff or center; the numeric key-to-role mapping is not documented, so no native_path is claimed.
Cutoff frequency
A passband edge or cutoff frequency under the selected filter response convention.
circuit.filter.cutoff_frequency · corner frequency
1 documented vocabulary mapping
Nuhertz FilterSolutions: Cutoff Frequency
approximate · direction both
GUI field. Shares the class-dependent .ftr frequency slots with the center-frequency specification; no native_path is claimed.
Filter class (frequency selectivity)
Low-pass, high-pass, band-pass, band-stop, diplexer, and related selectivity choices.
circuit.filter.filter_class · filter class, selectivity class
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.filtersolutions_core.attributes.Attributes.filter_class.html
1 documented vocabulary mapping
Nuhertz FilterSolutions: Filter Class
ftr.FilterClass
approximate · direction both
Aliases: FilterClass
The .ftr FilterClass key stores an undocumented numeric enum; human-readable selectivity names (Lowpass, Highpass, Bandpass, Bandstop, Diplexer) live in the GUI.
Filter order
The number of reactive poles or sections in the declared filter synthesis.
circuit.filter.order · filter order
1 documented vocabulary mapping
Nuhertz FilterSolutions: Order
ftr.Order
exact · direction both
Verified as a plain integer key in shipped .ftr examples.
Passband ripple
The allowed passband variation under the selected response convention.
circuit.filter.passband_ripple · pass band ripple
1 documented vocabulary mapping
Nuhertz FilterSolutions: Ripple
ftr.Ripple
exact · direction both
Aliases: Pass Band Ripple
Filter response approximation family
Butterworth, Chebyshev, elliptic, Bessel, Gaussian, Legendre, and related approximations.
circuit.filter.response_type · approximation type, response family
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.filtersolutions_core.attributes.Attributes.filter_type.html
1 documented vocabulary mapping
Nuhertz FilterSolutions: Filter Type
ftr.FilterType
approximate · direction both
Aliases: FilterType
The .ftr FilterType key stores an undocumented numeric enum; human-readable approximation names (Butterworth, Chebyshev, Elliptic, Bessel, Gaussian, Legendre) live in the GUI.
Stopband attenuation
The required rejection at a declared stopband frequency or range.
circuit.filter.stopband_attenuation · stop band attenuation
1 documented vocabulary mapping
Nuhertz FilterSolutions: Stop Band Attenuation
approximate · direction both
Aliases: Stopband Attenuation
GUI field; the corresponding .ftr key role is undocumented.
Stopband edge frequency
A frequency at which stopband attenuation is required.
circuit.filter.stopband_frequency · stop band frequency
1 documented vocabulary mapping
Nuhertz FilterSolutions: Stop Band Frequency
approximate · direction both
Aliases: Stopband Frequency
GUI field; the corresponding .ftr key role is undocumented.
Network termination
The impedance or network connected at a circuit input or output. Source and load terminations affect matching, delivered power and filter response; they are not automatically the measurement reference impedance.
circuit.termination
https://ansyshelp.ansys.com/public/Views/Secured/Electronics/v242/en/PDFs/FilterSolutions.pdf
https://doc.comsol.com/6.3/doc/com.comsol.help.acdc/acdc_ug_electric_fields.07.020.html
2 documented vocabulary mappings
Load termination impedance
The load impedance used for delivered-power and network calculations.
circuit.termination.load_impedance · load impedance
1 documented vocabulary mapping
Nuhertz FilterSolutions: Load Resistance
narrower · direction both
Aliases: Load Res
Resistive load termination only; complex terminations use a separate load impedance table in the GUI.
Source termination impedance
The source reference impedance used for excitation and network normalization.
circuit.termination.source_impedance · source impedance, generator impedance
1 documented vocabulary mapping
Nuhertz FilterSolutions: Source Resistance
narrower · direction both
Aliases: Source Res
Resistive source termination only; complex terminations use a separate source impedance table in the GUI.
Scene device
An identifiable transmitter, receiver or other modeled component with physical or electrical state and connections. A device abstraction does not imply that its internal geometry or semiconductor physics is resolved.
device
https://nvlabs.github.io/sionna/rt/api/radio_devices.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/physics_builder_manual_tools.43.150.html
2 documented vocabulary mappings
NVIDIA Sionna RT: RadioDevice
narrower · direction to_canonical · scope documentation_group
Sionna RT 2.2 documents the radio-device base class for transmitters and receivers; it does not resolve arbitrary device internals. Documentation-only category mapping; not an executable translation.
https://nvlabs.github.io/sionna/rt/api/radio_devices.html
Receiver device
A receiving endpoint in a propagation scene, with position, orientation, and antenna or array characteristics used to evaluate received paths, channel responses, or power.
device.receiver · RX
https://nvlabs.github.io/sionna/rt/api/radio_devices.html
2 documented vocabulary mappings
Remcom Wireless InSite: Receiver
exact · direction both
Aliases: RX
NVIDIA Sionna RT: Receiver
sionna.rt.Receiver
exact · direction both
Aliases: RX
Transmitter device
A transmitting endpoint in a propagation scene, with position, orientation, antenna or array characteristics, and transmit-power normalization.
device.transmitter · TX
https://nvlabs.github.io/sionna/rt/api/radio_devices.html
2 documented vocabulary mappings
Remcom Wireless InSite: Transmitter
exact · direction both
Aliases: TX
NVIDIA Sionna RT: Transmitter
sionna.rt.Transmitter
exact · direction both
Aliases: TX
Computational domain
A spatial region on which equations or material models are defined. Its dimensionality, extent and relationship to neighboring regions must be specified; it is distinct from the boundary enclosing it.
domain
https://meep.readthedocs.io/en/latest/Python_User_Interface/#simulation
https://doc.comsol.com/6.3/doc/com.comsol.help.rf/rf_ug_radio_frequency.07.057.html
2 documented vocabulary mappings
Absorbing exterior layer
A surrounding absorbing region, such as a PML, designed to attenuate outgoing waves with minimal reflection. Thickness and grading must resolve the incident field.
domain.absorbing_layer · PML, perfectly matched layer
9 documented vocabulary mappings
Ansys Lumerical FDTD: PML
exact · direction both
Aliases: PML boundary
COMSOL Multiphysics: Perfectly Matched Layer
exact · direction both · scope definitions_domain
Aliases: PML
SIMULIA CST Studio Suite: PML
exact · direction both
Aliases: Perfectly Matched Layer
Altair Feko: Perfectly Matched Layer
exact · direction both · scope fem_or_fdtd_region
Aliases: PML
Ansys HFSS: PML
exact · direction both
Aliases: Perfectly Matched Layer
Meep: PML
meep.PML
exact · direction both
Meep: Absorber
meep.Absorber
narrower · direction both
Meep Absorber is a scalar adiabatic absorber and is distinct from PML.
openEMS: PML_8
FDTD.SetBoundaryCond
narrower · direction both
Aliases: PML-8, PML
PML_8 selects an eight-cell PML on one side of the grid.
Remcom XFdtd: PML
exact · direction both
Aliases: Perfectly Matched Layer
Excitation
A prescribed source that drives a model, such as impressed current, incident field, port excitation or time waveform. Its amplitude, phase, spatial support and frequency or time convention are part of the input.
excitation
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.hfss.Hfss.html
https://meep.readthedocs.io/en/latest/Python_User_Interface/#simulation
2 documented vocabulary mappings
Impressed current source
A prescribed electric current density or lumped current source with a defined region, direction, magnitude, and waveform.
excitation.current_source
3 documented vocabulary mappings
Altair Feko: Impressed Current Source
exact · direction both
Aliases: Current Source
Remcom XFdtd: Current Source
exact · direction both
Excitation frequency
The frequency or time dependence assigned to a source. It must agree with the study formulation and material model.
excitation.frequency
7 documented vocabulary mappings
Ansys Lumerical FDTD: center frequency
approximate · direction both · scope source
Aliases: center wavelength
Frequency and wavelength representations require unit-aware reciprocal conversion.
Ansys HFSS: Frequency
exact · direction both · scope excitation
The same native word as setup Frequency has a different owner and meaning; scope is required for reverse lookup.
Meep: frequency
SourceTime.frequency
exact · direction both · scope source
Aliases: fcen
openEMS: SetGaussExcite
FDTD.SetGaussExcite
broader · direction both
Aliases: f0, fc
Gaussian excitation uses center and cutoff bandwidth parameters rather than one monochromatic frequency.
Remcom Wireless InSite: Waveform
broader · direction both · scope transmitter
Wireless InSite transmitter waveform can carry one or more frequencies and bandwidth settings.
Remcom XFdtd: Waveform
broader · direction both · scope excitation
XFdtd time-domain waveform settings determine spectral content rather than a single solve frequency.
NVIDIA Sionna RT: frequency
Scene.frequency
exact · direction both · scope scene
Mode source
A source that injects a named eigenmode or guided field profile rather than a uniform voltage or current.
excitation.mode_source
2 documented vocabulary mappings
Meep: EigenModeSource
meep.EigenModeSource
exact · direction both
Incident plane wave
An incident plane wave is defined by propagation direction, polarization, amplitude, phase, and often an oblique-incidence reference.
excitation.plane_wave
7 documented vocabulary mappings
Ansys Lumerical FDTD: Plane wave source
addplane
exact · direction both
Aliases: addplane
COMSOL Multiphysics: Background Field
narrower · direction both · scope scattered_field_formulation
A plane wave is one expression usable as an EM background field.
SIMULIA CST Studio Suite: Plane Wave
exact · direction both
Altair Feko: Plane Wave
exact · direction both
Ansys HFSS: Incident Wave
hfss.plane_wave
exact · direction both
Aliases: Plane Wave, plane_wave
openEMS: AddExcitation
broader · direction both
Aliases: Plane Wave Excitation
Remcom XFdtd: Plane Wave
exact · direction both
Aliases: Incident Plane Wave
Port-mode excitation
Activation of a mode on a separately represented port interface.
excitation.port_mode
6 documented vocabulary mappings
COMSOL Multiphysics: Wave excitation at this port
exact · direction both · scope port_setting
Aliases: Wave Excitation
SIMULIA CST Studio Suite: Port Excitation
exact · direction both · scope source
Altair Feko: FEM Modal Source
broader · direction both
Aliases: Waveguide Source, Voltage Source
These are distinct Feko sources attached to compatible ports; preserve the native source type.
Ansys HFSS: Edit Sources
broader · direction both · scope sources
Aliases: source magnitude and phase
Edit Sources controls one or more activated port modes and may also include incident sources.
openEMS: excite
approximate · direction both · scope port_argument
The boolean excite argument activates a separately parameterized port source.
Execution
Operations that schedule, run, stop or export a configured simulation. Process completion is separate from numerical convergence and from validation of the physical result.
execution
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.hfss.Hfss.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_customizing.20.12.html
2 documented vocabulary mappings
Build model
The model-construction step that creates geometry, materials, boundaries, ports, and study settings from a validated description.
execution.build_model
3 documented vocabulary mappings
COMSOL Multiphysics: Build All
exact · direction both
Aliases: Build Selected
Altair Feko: CADFEKO
broader · direction both · scope application
MetaClaw WiTwin Adapter: model_unit_cell_witwin
modules.witwin_integration.model_unit_cell_witwin
exact · direction both
CPU core count
The requested CPU parallelism for a solver job; memory bandwidth, licensing, and solver scaling can limit speedup.
execution.cpu_cores
3 documented vocabulary mappings
Meep: mpirun -np
approximate · direction both
Aliases: MPI processes
MPI process count is not always identical to physical CPU core count.
openEMS: numThreads
FDTD.Run(numThreads=...)
exact · direction both
Remcom Wireless InSite: CPU Threads
exact · direction both
Aliases: Multithreading
Export results
The result-extraction step that writes fields, network data, metadata, and evidence in a declared format.
execution.export_results
12 documented vocabulary mappings
Ansys Lumerical FDTD: export
exact · direction both
Aliases: matlabsave, savedata
COMSOL Multiphysics: Export
exact · direction both · scope results
SIMULIA CST Studio Suite: Export ASCII
exact · direction both
Aliases: Export
Altair Feko: POSTFEKO Export
exact · direction both
Aliases: Export
Ansys HFSS: Export Results
hfss.export_results
exact · direction both
Aliases: export_results, export_report_to_file
Meep: output_*
broader · direction both
Aliases: HDF5 output
Nuhertz FilterSolutions: Export to Ansys Electronics Desktop
narrower · direction both
Aliases: AEDT Export, Direct Export
GUI-only: Direct export drives a live AEDT session, or a recorded IronPython script is written for AEDT Tools > Run Script. FilterSolutions scripts AEDT outbound; nothing scripts FilterSolutions inbound on 2024 R2.
openEMS: Write Results
exact · direction both
Aliases: Touchstone Export
Remcom Wireless InSite: Export Results
exact · direction both
Remcom XFdtd: Export Results
exact · direction both
MetaClaw TMM: save_results
TMMOptimizer.save_results
exact · direction both
MetaClaw WiTwin Adapter: generate_report_witwin
modules.witwin_integration.generate_report_witwin
exact · direction both
GPU acceleration
A solver execution option that uses a supported GPU path. It is engine and device specific and must be verified by runtime evidence.
execution.gpu_acceleration
2 documented vocabulary mappings
Remcom Wireless InSite: GPU Acceleration
exact · direction both
NVIDIA Sionna RT: CUDA Dr.Jit backend
narrower · direction both
Aliases: drjit.cuda
Run solver
The execution step that invokes the selected numerical engine. Translation and model construction do not prove that a solve ran.
execution.solve · analyze, compute
13 documented vocabulary mappings
Ansys Lumerical FDTD: run
exact · direction both
COMSOL Multiphysics: Compute
exact · direction both
Aliases: Run
SIMULIA CST Studio Suite: Start Simulation
exact · direction both
Aliases: Start Solver
Altair Feko: RUNFEKO
exact · direction both
Aliases: Run Solver
Ansys HFSS: Analyze
hfss.analyze
exact · direction both
Aliases: Analyze All, analyze, analyze_setup
Meep: run
Simulation.run
exact · direction both
openEMS: Run
FDTD.Run
exact · direction both
Remcom Wireless InSite: Run Study
exact · direction both
Aliases: Calculate
Remcom XFdtd: Run Calculation
exact · direction both
Aliases: Run Simulation
NVIDIA Sionna RT: PathSolver.__call__
PathSolver.__call__
exact · direction both
Aliases: compute paths
NVIDIA Sionna RT: RadioMapSolver.__call__
RadioMapSolver.__call__
exact · direction both
Aliases: compute radio map
MetaClaw TMM: optimize
TMMOptimizer.optimize
broader · direction both
Aliases: run optimization
The engine solves the layered model repeatedly while optimizing infill and thickness.
MetaClaw WiTwin Adapter: run_simulation_witwin
modules.witwin_integration.run_simulation_witwin
exact · direction both
This invokes the adapter's analytical fallback in the current repository version.
Mathematical formulation
The mathematical representation of a physical problem, such as time-domain, harmonic frequency-domain or eigenmode equations. It is distinct from the numerical discretization used to approximate those equations.
formulation
https://meep.readthedocs.io/en/latest/Python_User_Interface/#frequency-domain-solver
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_modeling.19.067.html
2 documented vocabulary mappings
Characteristic-mode formulation
A weighted eigenvalue formulation that finds characteristic current modes at specified frequencies. Its modal eigenvalues and radiation properties differ from the resonant frequencies and field modes returned by an eigenfrequency solver.
formulation.characteristic_mode · characteristic mode, characteristic mode analysis, CMA
https://help.altair.com/feko/topics/feko/lua_scripts/script_characteristic_mode_analysis_synthesis_and_design/script_cma_definition_feko_c.htm
1 documented vocabulary mapping
Eigenmode formulation
A source-free eigenproblem that finds resonant frequencies and field shapes subject to the model boundaries. It does not by itself provide driven S-parameters.
formulation.eigenmode · eigenfrequency
https://ansyshelp.ansys.com/public/Views/Secured/Electronics/v242/en/Subsystems/HFSS/Content/HFSS/CalculatingtheResonantFrequency.htm
3 documented vocabulary mappings
COMSOL Multiphysics: Eigenfrequency
broader · direction both · scope study_step
Aliases: Mode Analysis, Boundary Mode Analysis
COMSOL exposes several distinct eigenvalue/mode study types; preserve the selected native study.
SIMULIA CST Studio Suite: Eigenmode Solver
exact · direction both
Ansys HFSS: Eigenmode
exact · direction both · scope solution_type
Frequency-domain formulation
A steady-state harmonic formulation at one or more discrete frequencies. A frequency sweep reuses or rebuilds solutions according to the solver and sweep type.
formulation.frequency_domain · frequency domain, harmonic
5 documented vocabulary mappings
COMSOL Multiphysics: Electromagnetic Waves, Frequency Domain
exact · direction both · scope physics_interface
Aliases: Frequency Domain
SIMULIA CST Studio Suite: Frequency Domain Solver
exact · direction both
Altair Feko: Frequency
narrower · direction both · scope configuration
A Feko frequency configuration is one concrete frequency-domain formulation.
MetaClaw TMM: frequency sweep
exact · direction both
Aliases: broadband TMM
MetaClaw WiTwin Adapter: analytical grounded-slab solve
_analytical_reflectarray_s11
narrower · direction both
The current MetaClaw adapter evaluates a grounded dielectric slab analytically; it does not yet invoke a general WiTwin Maxwell solver.
Time-domain formulation
A transient formulation that advances fields in time. A broadband spectrum may be derived from the recorded time signal; this is not the same as independently solving every frequency.
formulation.time_domain · time domain, transient
6 documented vocabulary mappings
Ansys Lumerical FDTD: FDTD
exact · direction both · scope formulation
SIMULIA CST Studio Suite: Time Domain Solver
exact · direction both
Aliases: Transient Solver
Altair Feko: Time Analysis
exact · direction both · scope configuration
Meep: time stepping
exact · direction both
Aliases: time domain
openEMS: Time-Domain Simulation
exact · direction both
Aliases: Transient
Remcom XFdtd: Transient
exact · direction both
Aliases: Time Domain
Geometry
The shapes, coordinates, dimensions and connectivity describing a modeled structure. Geometry includes primitives, imported objects and their transformations; material assignments and meshing are separate decisions.
geometry
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.hfss.Hfss.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_environment.18.43.html
2 documented vocabulary mappings
Imported geometry
Geometry brought in from a CAD or mesh file. Units, healing, tolerances, coordinate system, and watertightness must be checked before solving.
geometry.import · CAD import, geometry asset
9 documented vocabulary mappings
Ansys Lumerical FDTD: Import
addimport
exact · direction both
Aliases: addimport, import object
COMSOL Multiphysics: Import
exact · direction both · scope geometry
Aliases: CAD Import
SIMULIA CST Studio Suite: Import CAD Data
exact · direction both
Aliases: Import
Altair Feko: Import Geometry
exact · direction both
Aliases: CAD Import
Ansys HFSS: Import 3D CAD
hfss.modeler.import_3d_cad
exact · direction both
Aliases: import_3d_cad, import_cad
openEMS: ReadFromXML
narrower · direction both
Aliases: CSX XML
This loads CSXCAD-native geometry; other CAD formats require separate conversion.
Remcom Wireless InSite: Import Geometry
exact · direction both
Aliases: CAD Import
Remcom XFdtd: CAD Import
exact · direction both
Aliases: Import CAD
NVIDIA Sionna RT: load_scene
sionna.rt.load_scene
broader · direction both
Aliases: Mitsuba scene, SceneObject
load_scene loads a complete Mitsuba scene, while SceneObject names an object inside that scene.
https://nvlabs.github.io/sionna/rt/api/scene.html
Primitive
A basic parameterized geometric shape used to construct a model, such as a box, sphere, cylinder or planar sheet. The available dimensions and parameter conventions depend on the modeler.
geometry.primitive
https://aedt.docs.pyansys.com/version/stable/API/Primitive_Objects.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_geometry.23.033.html
2 documented vocabulary mappings
Ansys HFSS: Primitives3D
narrower · direction to_canonical · scope documentation_group
The documented 3D primitive container supplies basic modeler objects; parameter and dimensional conventions remain solver-specific. Documentation-only category mapping; not an executable translation.
https://aedt.docs.pyansys.com/version/stable/API/Primitive_Objects.html
Box
A six-faced solid defined by its origin, three extents, and orientation. Use it for a volumetric region; a zero-thickness sheet is a different model.
geometry.primitive.box · cuboid, brick
9 documented vocabulary mappings
Ansys Lumerical FDTD: Rectangle
addrect
exact · direction both
Aliases: addrect
COMSOL Multiphysics: Block
exact · direction both
SIMULIA CST Studio Suite: Brick
exact · direction both
Altair Feko: Cuboid
exact · direction both
Aliases: Box
Ansys HFSS: Box
hfss.modeler.create_box
exact · direction both
Aliases: create_box
Meep: Block
meep.Block
exact · direction both
openEMS: AddBox
CSXCAD.CSX.AddBox
exact · direction both
Aliases: Box
Remcom XFdtd: Brick
exact · direction both
Aliases: Box
MetaClaw WiTwin Adapter: Box
witwin.core.Box
exact · direction both
Cylinder
A solid defined by an axis, radius, and height. The axis direction and end-cap treatment are part of the model definition.
geometry.primitive.cylinder
8 documented vocabulary mappings
Ansys Lumerical FDTD: Circle
addcircle
narrower · direction both
Aliases: addcircle
A 3D extruded Circle object is Lumerical's cylindrical primitive.
COMSOL Multiphysics: Cylinder
exact · direction both
SIMULIA CST Studio Suite: Cylinder
exact · direction both
Altair Feko: Cylinder
exact · direction both
Ansys HFSS: Cylinder
hfss.modeler.create_cylinder
exact · direction both
Aliases: create_cylinder
Meep: Cylinder
meep.Cylinder
exact · direction both
openEMS: AddCylinder
CSXCAD.CSX.AddCylinder
exact · direction both
Aliases: Cylinder
Remcom XFdtd: Cylinder
exact · direction both
Planar sheet
An ideal planar sheet or surface. It has no volume unless a thickness is explicitly assigned.
geometry.primitive.plane · sheet, rectangle
6 documented vocabulary mappings
COMSOL Multiphysics: Rectangle
narrower · direction both · scope work_plane
SIMULIA CST Studio Suite: Sheet
narrower · direction both
Altair Feko: Rectangle
narrower · direction both
A rectangle is one planar-face primitive in CADFEKO.
Ansys HFSS: Rectangle
hfss.modeler.create_rectangle
narrower · direction both
Aliases: create_rectangle, sheet
An HFSS rectangle is one concrete planar-sheet representation.
openEMS: AddPolygon
CSXCAD.CSX.AddPolygon
broader · direction both
Aliases: Polygon
A CSXCAD polygon can represent a planar sheet but can also be extruded.
Remcom XFdtd: Sheet
narrower · direction both
A sheet is one planar geometry representation in XFdtd.
Sphere
A solid whose boundary is defined by a center and radius. Mesh resolution must capture curvature at the operating wavelength.
geometry.primitive.sphere
8 documented vocabulary mappings
Ansys Lumerical FDTD: Sphere
addsphere
exact · direction both
Aliases: addsphere
COMSOL Multiphysics: Sphere
exact · direction both
SIMULIA CST Studio Suite: Sphere
exact · direction both
Altair Feko: Sphere
exact · direction both
Ansys HFSS: Sphere
hfss.modeler.create_sphere
exact · direction both
Aliases: create_sphere
Meep: Sphere
meep.Sphere
exact · direction both
openEMS: AddSphere
CSXCAD.CSX.AddSphere
exact · direction both
Aliases: Sphere
Remcom XFdtd: Sphere
exact · direction both
Physics interface
A connection across which modeled regions or subsystems exchange quantities, subject to continuity or coupling conditions. Port interfaces are one case; a software physics-interface label is not automatically the same concept.
interface
https://aedt.docs.pyansys.com/version/stable/API/Boundaries.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/physics_builder_manual_tools.43.163.html
2 documented vocabulary mappings
Ansys HFSS: BoundaryObject
conditional · direction to_canonical · scope documentation_group
Only boundary objects representing a coupling or port interface belong here; the class also represents unrelated boundary conditions. Documentation-only category mapping; not an executable translation.
https://aedt.docs.pyansys.com/version/stable/API/Boundaries.html
Port interface
A defined electrical or electromagnetic connection used to excite or observe a system. Port mode, reference plane, impedance, normalization and orientation must be specified before comparing network quantities.
interface.port
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.hfss.Hfss.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/physics_builder_manual_tools.43.154.html
2 documented vocabulary mappings
Floquet port
A periodic port expands fields into spatial harmonics for a unit cell. It requires compatible periodic boundaries and scan or phase parameters.
interface.port.floquet
3 documented vocabulary mappings
COMSOL Multiphysics: Periodic Port
approximate · direction both · scope emw_boundary
A COMSOL periodic Port plus Floquet periodic conditions fills the Floquet-port role; it is not one standalone feature.
Ansys HFSS: Floquet Port
hfss.create_floquet_port
exact · direction both
Aliases: create_floquet_port
MetaClaw WiTwin Adapter: floquet_two_port
lossy · direction to_canonical · scope scene_metadata
This is currently metadata only; the analytical fallback returns a grounded-slab S11 estimate rather than a general two-port Floquet solve.
Lumped port
A lumped port applies an explicitly oriented voltage or current across a finite integration line or surface; its placement and impedance matter.
interface.port.lumped
5 documented vocabulary mappings
COMSOL Multiphysics: Lumped Port
exact · direction both · scope emw_boundary
SIMULIA CST Studio Suite: Discrete Port
approximate · direction both
A CST discrete port is the closest circuit/lumped interface, but native port definitions retain additional topology and impedance settings.
Altair Feko: Edge Port
approximate · direction both
Aliases: Wire Port
Feko edge and wire ports are circuit interfaces, but their topology is more specific than a generic lumped port.
Ansys HFSS: Lumped Port
hfss.lumped_port
exact · direction both
Aliases: lumped_port
openEMS: AddLumpedPort
FDTD.AddLumpedPort
broader · direction both
AddLumpedPort can create and excite the port in one call; use the excite flag to preserve source semantics.
Wave port
A wave port represents a guided cross-section with one or more computed or declared propagation modes.
interface.port.wave
7 documented vocabulary mappings
COMSOL Multiphysics: Port
broader · direction both · scope emw_boundary
Aliases: Numeric Port, TEM Port, Rectangular Port, Coaxial Port, Circular Port
COMSOL Port has several native mode/type choices; preserve the Port type setting.
SIMULIA CST Studio Suite: Waveguide Port
exact · direction both
Altair Feko: Waveguide Port
exact · direction both
Altair Feko: FEM Modal Port
narrower · direction both · scope fem_region
A FEM modal port is a solver-region-specific wave port.
Ansys HFSS: Wave Port
hfss.wave_port
exact · direction both
Aliases: wave_port
openEMS: AddWaveGuidePort
FDTD.AddWaveGuidePort
broader · direction both
Aliases: AddRectWaveGuidePort, AddMSLPort
The APIs cover several distinct waveguide and microstrip port constructions.
Material
A constitutive description assigned to part of a model that relates physical fields and responses. Material values may depend on frequency, temperature, direction or state and are distinct from geometry.
material
https://aedt.docs.pyansys.com/version/stable/API/MaterialManagement.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_materials.25.12.html
2 documented vocabulary mappings
Electromagnetic material properties
Constitutive properties governing electric and magnetic response, including permittivity, permeability, conductivity and loss. Units, tensor form, dispersion and complex-sign convention must be retained when translating values.
material.electromagnetic
https://aedt.docs.pyansys.com/version/stable/API/MaterialManagement.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_materials.25.12.html
2 documented vocabulary mappings
Ansys HFSS: MatProperties
conditional · direction to_canonical · scope documentation_group
This property-name catalog includes electromagnetic and other physical properties; only its electromagnetic subset belongs to this category. Documentation-only category mapping; not an executable translation.
https://aedt.docs.pyansys.com/version/stable/API/MaterialManagement.html
Electric conductivity
Electric conductivity σ in siemens per metre. In a frequency-domain model it contributes conduction loss and is not interchangeable with εr.
material.electromagnetic.electric_conductivity · conductivity, sigma
11 documented vocabulary mappings
Ansys Lumerical FDTD: conductivity
exact · direction both
COMSOL Multiphysics: Electric conductivity
exact · direction both
Aliases: sigma
SIMULIA CST Studio Suite: Electric Conductivity
exact · direction both
Aliases: Conductivity
Altair Feko: Conductivity
exact · direction both
Ansys HFSS: conductivity
hfss.materials[*].conductivity
exact · direction both
Meep: D_conductivity
meep.Medium.D_conductivity
approximate · direction both
Meep conductivity is expressed in Meep's normalized unit system and requires unit conversion.
openEMS: kappa
exact · direction both
Aliases: Kappa, Conductivity
Remcom Wireless InSite: Conductivity
exact · direction both
Remcom XFdtd: Electric Conductivity
exact · direction both
Aliases: Conductivity
NVIDIA Sionna RT: conductivity
RadioMaterial.conductivity
exact · direction both
MetaClaw WiTwin Adapter: sigma_e
witwin.core.Material.sigma_e
exact · direction both
Dielectric loss tangent
Dielectric loss tangent tanδ, commonly the ratio of dissipative to stored electric response. Its convention and frequency must match the material data source.
material.electromagnetic.loss_tangent · tan delta, loss tangent
8 documented vocabulary mappings
COMSOL Multiphysics: Loss tangent
exact · direction both
Aliases: tan delta
SIMULIA CST Studio Suite: Tan Delta
exact · direction both
Aliases: Loss Tangent
Altair Feko: Dielectric Loss Tangent
exact · direction both
Aliases: Loss Tangent
Ansys HFSS: dielectric_loss_tangent
hfss.materials[*].dielectric_loss_tangent
exact · direction both
Aliases: dielectric loss tangent
openEMS: tan_delta
exact · direction both
Aliases: Loss Tangent
Remcom Wireless InSite: Dielectric Loss Tangent
exact · direction both
Aliases: Loss Tangent
Remcom XFdtd: Electric Loss Tangent
exact · direction both
Aliases: Loss Tangent
MetaClaw TMM: loss_tangent
MaterialProperty.loss_tangent
exact · direction both
Relative permeability
Relative magnetic permeability μr. It describes magnetic response relative to vacuum and may be tensor-valued or frequency dependent.
material.electromagnetic.relative_permeability · mu r
8 documented vocabulary mappings
COMSOL Multiphysics: Relative permeability
exact · direction both
Aliases: mur
SIMULIA CST Studio Suite: Mue
exact · direction both
Aliases: Relative Permeability
Altair Feko: Relative Permeability
exact · direction both
Ansys HFSS: permeability
hfss.materials[*].permeability
exact · direction both
Aliases: relative permeability
Meep: mu
meep.Medium.mu
exact · direction both
openEMS: mue
exact · direction both
Aliases: Mue, Relative Permeability
Remcom XFdtd: Relative Permeability
exact · direction both
Aliases: Permeability
MetaClaw WiTwin Adapter: mu_r
witwin.core.Material.mu_r
exact · direction both
Relative permittivity
Relative electric permittivity εr, generally frequency dependent and possibly complex. It controls electric energy storage and dielectric loss together with conductivity or loss tangent.
material.electromagnetic.relative_permittivity · epsilon r, dielectric constant
13 documented vocabulary mappings
Ansys Lumerical FDTD: refractive index
conditional · direction both
Aliases: index
Refractive index maps to permittivity only under stated magnetic and dispersion assumptions.
Requires: isotropic nonmagnetic material; explicit dispersion convention
COMSOL Multiphysics: Relative permittivity
exact · direction both
Aliases: epsilonr
SIMULIA CST Studio Suite: Epsilon
exact · direction both
Aliases: Relative Permittivity
Altair Feko: Relative Permittivity
exact · direction both
Aliases: Dielectric Constant
Ansys HFSS: permittivity
hfss.materials[*].permittivity
exact · direction both
Aliases: relative permittivity
Meep: epsilon
meep.Medium.epsilon
exact · direction both
openEMS: epsilon
exact · direction both
Aliases: Epsilon, Relative Permittivity
Remcom Wireless InSite: Permittivity
exact · direction both
Aliases: Relative Permittivity
Remcom XFdtd: Relative Permittivity
exact · direction both
Aliases: Permittivity, Dielectric Constant
NVIDIA Sionna RT: relative_permittivity
RadioMaterial.relative_permittivity
exact · direction both
MetaClaw TMM: e1
MaterialProperty.e1
approximate · direction both · scope material_endpoint_1
e1 and e2 are endpoint properties used by MetaClaw's anisotropic infill mixing model, not a complete scalar material definition.
MetaClaw TMM: e2
MaterialProperty.e2
approximate · direction both · scope material_endpoint_2
e1 and e2 are endpoint properties used by MetaClaw's anisotropic infill mixing model, not a complete scalar material definition.
MetaClaw WiTwin Adapter: eps_r
witwin.core.Material.eps_r
exact · direction both
Discretization and mesh
The discrete spatial representation used to approximate geometry and fields. Element or cell type, size, order and quality affect numerical error and cost; a fine-looking mesh alone does not prove convergence.
mesh
https://aedt.docs.pyansys.com/version/stable/API/Mesh.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_environment.18.43.html
2 documented vocabulary mappings
Ansys HFSS: Mesh
narrower · direction to_canonical · scope documentation_group
The PyAEDT mesh API groups HFSS mesh operations; it does not establish mesh quality or convergence. Documentation-only category mapping; not an executable translation.
https://aedt.docs.pyansys.com/version/stable/API/Mesh.html
Adaptive refinement
Mesh changes driven by a solution, error indicator or refinement criterion. The indicator, marked regions, refinement limits and stopping rule must accompany any claim that adaptation has converged.
mesh.adaptive
https://aedt.docs.pyansys.com/version/stable/API/SetupTemplatesHFSS.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_solver.36.011.html
2 documented vocabulary mappings
Ansys HFSS: PercentRefinement
narrower · direction to_canonical · scope documentation_group
This HFSS setup control specifies refinement amount within an adaptive process; it is not an error threshold or a convergence result. Documentation-only category mapping; not an executable translation.
https://aedt.docs.pyansys.com/version/stable/API/SetupTemplatesHFSS.html
Adaptive convergence threshold
Solver-specific error or response-change threshold; context is required.
mesh.adaptive.convergence_threshold
2 documented vocabulary mappings
Ansys HFSS: MaxDeltaS
setup.props.MaxDeltaS
exact · direction both · scope driven_setup
Aliases: Maximum Delta S
For driven port problems this threshold is change in the S matrix; other HFSS solution types use different convergence quantities.
openEMS: EndCriteria
openEMS(EndCriteria=...)
approximate · direction both
EndCriteria is residual-energy decay, not adaptive mesh response change.
Maximum adaptive passes
The hard upper bound on adaptive passes. Reaching it is not evidence of convergence.
mesh.adaptive.maximum_passes
2 documented vocabulary mappings
COMSOL Multiphysics: Maximum number of refinements
approximate · direction both · scope adaptive_mesh
COMSOL refinement iterations are analogous to, but not identical with, HFSS adaptive passes.
Ansys HFSS: MaximumPasses
setup.props.MaximumPasses
exact · direction both
Aliases: Maximum Number of Passes
Minimum adaptive passes
The minimum number of adaptive passes before convergence can be declared.
mesh.adaptive.minimum_passes
1 documented vocabulary mapping
Ansys HFSS: MinimumPasses
setup.props.MinimumPasses
exact · direction both
Aliases: Minimum Number of Passes
Maximum element length
A global upper bound on element or cell size. It is a starting control, not a proof that resonant or localized features are resolved.
mesh.global_max_element_length · maximum mesh step, max cell size
8 documented vocabulary mappings
Ansys Lumerical FDTD: dx, dy, dz
approximate · direction both · scope mesh_override_region
Aliases: mesh override, maximum mesh step
Lumerical mesh overrides are directional grid steps rather than one global maximum element length.
COMSOL Multiphysics: Maximum element size
exact · direction both · scope mesh_size
Aliases: hmax
SIMULIA CST Studio Suite: Maximum Mesh Step
broader · direction both
Aliases: Lines per wavelength
CST mesh controls may specify either an absolute step or wavelength-relative density.
Altair Feko: Maximum Edge Length
exact · direction both
Aliases: Mesh Size
Ansys HFSS: MaxLength
hfss.mesh.assign_length_mesh.MaxLength
exact · direction both
Aliases: Maximum Length
Meep: resolution
Simulation.resolution
approximate · direction both
Aliases: pixels per distance unit
Resolution is inverse grid spacing, not a maximum element length; conversion depends on the length unit.
openEMS: Grid Delta
CSX.GetGrid().SetLines
approximate · direction both
Aliases: SetLines, mesh step
FDTD grid line spacing is not a finite-element maximum edge length; units and all three axes are required.
Remcom XFdtd: Cell Size
approximate · direction both
Aliases: Grid Cell Size
FDTD cell size constrains grid spacing; it is not a finite-element maximum edge length.
Numerical method
An algorithm and discretization used to approximate governing equations, such as finite elements, finite differences, integral equations or ray tracing. Its assumptions and error controls must match the physical problem.
numerical_method
https://meep.readthedocs.io/en/latest/Yee_Lattice/
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_equationbased.32.020.html
2 documented vocabulary mappings
Meep: Yee Lattice
narrower · direction to_canonical · scope documentation_group
The staggered-field discretization is a specific part of Meep FDTD; it is not a generic numerical-method selector. Documentation-only category mapping; not an executable translation.
https://meep.readthedocs.io/en/latest/Yee_Lattice/
Finite-difference time-domain
FDTD samples Maxwell curl equations on a spatial and temporal grid. Stability, dispersion, absorbing boundaries, and a sufficiently small time step control accuracy.
numerical_method.finite_difference_time_domain · FDTD
5 documented vocabulary mappings
Ansys Lumerical FDTD: FDTD
exact · direction both · scope solver_method
Altair Feko: Finite-Difference Time-Domain
exact · direction both
Aliases: FDTD
Meep: FDTD
exact · direction both
openEMS: FDTD
exact · direction both · scope method
Aliases: Finite-Difference Time-Domain
Remcom XFdtd: FDTD
exact · direction both
Aliases: Finite-Difference Time-Domain
Finite element method
The finite-element method approximates fields with local basis functions on an unstructured or structured mesh and enforces the weak Maxwell equations.
numerical_method.finite_element · FEM
4 documented vocabulary mappings
COMSOL Multiphysics: Finite Element Method
exact · direction both
Aliases: FEM
SIMULIA CST Studio Suite: Tetrahedral Frequency Domain Solver
narrower · direction both
Aliases: FEM
This CST solver choice is a concrete FEM implementation.
Altair Feko: Finite Element Method
exact · direction both
Aliases: FEM
Ansys HFSS: Finite Element Method
exact · direction both
Aliases: FEM
Finite integration technique
FIT integrates Maxwell equations over dual spatial grids. It is commonly used for broadband time- or frequency-domain computational electromagnetics.
numerical_method.finite_integration · FIT
1 documented vocabulary mapping
SIMULIA CST Studio Suite: Finite Integration Technique
exact · direction both
Aliases: FIT
Method of moments
MoM expands unknown currents or fields in basis functions and solves an integral equation, often reducing open-region radiation to surfaces or volumes.
numerical_method.method_of_moments · MoM
2 documented vocabulary mappings
SIMULIA CST Studio Suite: Integral Equation Solver
broader · direction both
Aliases: MoM
CST's Integral Equation Solver may use acceleration techniques in addition to baseline MoM.
Altair Feko: Method of Moments
exact · direction both
Aliases: MoM
Multilevel fast multipole method
MLFMM accelerates long-range interactions in integral-equation solves through a multilevel spatial grouping and low-rank translation scheme.
numerical_method.multilevel_fast_multipole · MLFMM
2 documented vocabulary mappings
SIMULIA CST Studio Suite: MLFMM
exact · direction both
Aliases: Multilevel Fast Multipole Method
Altair Feko: Multilevel Fast Multipole Method
exact · direction both
Aliases: MLFMM
Physical optics
Physical optics approximates induced currents on electrically large illuminated surfaces; it is not a full-wave substitute near strong coupling, edges, or resonances.
numerical_method.physical_optics · PO
1 documented vocabulary mapping
Altair Feko: Physical Optics
exact · direction both
Aliases: PO, Large Element PO, LE-PO
Ray/path tracing
A geometric propagation approximation that follows rays through reflection, transmission, and diffraction rules instead of solving fields on a volumetric mesh.
numerical_method.ray_tracing
1 documented vocabulary mapping
Remcom Wireless InSite: X3D Propagation Model
narrower · direction both
Aliases: X3D
X3D is Remcom's specific high-fidelity 3D ray model.
Geometric path solver
A path solver enumerates propagation paths and evaluates their delay, phase, and attenuation under its declared interaction model.
numerical_method.ray_tracing.path_solver
1 documented vocabulary mapping
Shooting and bouncing rays
Shooting-and-bouncing rays launches rays from sources and traces repeated interactions with scene geometry. It is useful for electrically large propagation scenes.
numerical_method.ray_tracing.sbr · SBR
2 documented vocabulary mappings
SIMULIA CST Studio Suite: Asymptotic Solver
broader · direction both
Aliases: Shooting and Bouncing Rays, SBR
CST's Asymptotic Solver is an SBR-family workflow with additional asymptotic options.
Remcom Wireless InSite: Shooting and Bouncing Rays
exact · direction both
Aliases: SBR, Full 3D SBR
Uniform theory of diffraction
UTD supplies asymptotic diffraction contributions around edges and wedges where geometric optics alone has no path.
numerical_method.ray_tracing.uniform_theory_diffraction · UTD
1 documented vocabulary mapping
Altair Feko: Uniform Theory of Diffraction
exact · direction both
Aliases: UTD
Transmission-line matrix method
TLM represents the field problem as a network of transmission-line nodes and advances incident and scattered pulses.
numerical_method.transmission_line_matrix · TLM
1 documented vocabulary mapping
SIMULIA CST Studio Suite: TLM Solver
exact · direction both
Aliases: Transmission Line Matrix
Physics
The physical laws and couplings included in a model, such as electromagnetics or coupled thermal behavior. Selecting physics does not by itself choose a formulation, solver or validated material model.
physics
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.hfss.Hfss.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_environment.18.43.html
2 documented vocabulary mappings
Electromagnetics
The Maxwell electromagnetic physics interface, including electric and magnetic fields, sources, material response, and boundary conditions.
physics.electromagnetics · EM
1 documented vocabulary mapping
COMSOL Multiphysics: Electromagnetic Waves
exact · direction both · scope physics_interface
Aliases: emw
Propagation controls
How waves travel and interact with a modeled environment, including reflection, transmission, diffraction and scattering. Full-wave and ray-based models represent these effects with different assumptions.
propagation
https://nvlabs.github.io/sionna/rt/api/paths.html
https://aedt.docs.pyansys.com/version/stable/API/SetupTemplatesHFSS.html
2 documented vocabulary mappings
Ansys HFSS: HFSSSBR
narrower · direction to_canonical · scope documentation_group
This SBR+ setup template contains ray density, bounce and diffraction-related settings; it does not represent all full-wave HFSS propagation models. Documentation-only category mapping; not an executable translation.
https://aedt.docs.pyansys.com/version/stable/API/SetupTemplatesHFSS.html
NVIDIA Sionna RT: Paths
narrower · direction to_canonical · scope documentation_group
Sionna RT 2.2 Paths stores computed radio propagation paths and interactions; it is a ray-model result container, not arbitrary full-wave propagation. Documentation-only category mapping; not an executable translation.
https://nvlabs.github.io/sionna/rt/api/paths.html
Maximum diffractions
The maximum number of diffraction interactions allowed in a ray or path calculation.
propagation.maximum_diffractions
2 documented vocabulary mappings
Remcom Wireless InSite: Maximum Diffractions
exact · direction both
Aliases: Number of Diffractions
Maximum reflections
The maximum number of reflection interactions allowed in a ray or path calculation.
propagation.maximum_reflections
2 documented vocabulary mappings
Remcom Wireless InSite: Maximum Reflections
exact · direction both
Aliases: Number of Reflections
Maximum transmissions
The maximum number of transmission interactions allowed in a ray or path calculation.
propagation.maximum_transmissions
2 documented vocabulary mappings
Remcom Wireless InSite: Maximum Transmissions
exact · direction both
Aliases: Number of Transmissions
Result and output
A quantity produced or derived from a calculation, such as fields, network parameters, power or a radiation pattern. Its input identity, sampling, units, normalization and validity evidence must remain attached.
result
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.hfss.Hfss.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_results.37.040.html
2 documented vocabulary mappings
Channel impulse response
A time-domain propagation response derived from the channel transfer function or a transient waveform under declared bandwidth assumptions.
result.channel_impulse_response · CIR
2 documented vocabulary mappings
Remcom Wireless InSite: Complex Impulse Response
exact · direction both
Aliases: CIR
Delay spread
A statistic of multipath arrival delays, whose definition and weighting must be recorded with the result.
result.delay_spread
1 documented vocabulary mapping
Remcom Wireless InSite: Delay Spread
exact · direction both
Electric field
The complex or time-varying electric-field vector sampled in the requested region and coordinate system.
result.electric_field · E field
9 documented vocabulary mappings
Ansys Lumerical FDTD: E
exact · direction both
Aliases: electric field
COMSOL Multiphysics: Electric field
exact · direction both
Aliases: emw.E
SIMULIA CST Studio Suite: E-Field
exact · direction both
Altair Feko: Electric Field
exact · direction both
Ansys HFSS: Mag_E
exact · direction both
Aliases: E Field
Meep: get_array
Simulation.get_array
broader · direction both
Aliases: E field array
get_array returns any selected field component; the component must be constrained to E.
openEMS: E-Field Dump
exact · direction both
Aliases: Et
Remcom Wireless InSite: Electric Field
exact · direction both
Aliases: E-field
Remcom XFdtd: Electric Field
exact · direction both
Aliases: E Field
Far-field radiation
Radiated field or power evaluated in the far zone, typically as a function of direction and frequency.
result.far_field · radiation pattern
8 documented vocabulary mappings
Ansys Lumerical FDTD: farfield3d
farfield3d
exact · direction both
Aliases: far field projection
COMSOL Multiphysics: Far-Field Calculation
exact · direction both
Aliases: Far Field
SIMULIA CST Studio Suite: Farfield Monitor
exact · direction both
Aliases: Farfield
Altair Feko: Far Field
exact · direction both
Aliases: Far Field Request
Ansys HFSS: Far Fields
exact · direction both
Aliases: Radiation Pattern, Infinite Sphere
Meep: get_farfield
Simulation.get_farfield
exact · direction both
Aliases: near-to-far-field
openEMS: CreateNF2FFBox
FDTD.CreateNF2FFBox
exact · direction both
Aliases: NF2FF
Remcom XFdtd: Far Zone
exact · direction both
Aliases: Far Field
Near-field distribution
Electric or magnetic fields sampled near the device before a far-field transformation.
result.near_field
8 documented vocabulary mappings
Ansys Lumerical FDTD: monitor field data
exact · direction both
Aliases: E monitor result
COMSOL Multiphysics: Field Evaluation
broader · direction both · scope near_field_dataset
SIMULIA CST Studio Suite: E-Field Monitor
narrower · direction both
Aliases: Near Field
Altair Feko: Near Field
exact · direction both
Aliases: Near Field Request
Ansys HFSS: Near Fields
exact · direction both
Aliases: Field Overlay
Meep: get_dft_array
Simulation.get_dft_array
exact · direction both
openEMS: Field Dump
exact · direction both
Remcom XFdtd: Near Field
exact · direction both
Synthesized circuit netlist
A circuit connectivity description containing elements, nodes, values, and analysis metadata; it is not a 3D field solution.
result.netlist · circuit netlist
1 documented vocabulary mapping
Nuhertz FilterSolutions: SPICE Netlist Export
narrower · direction both
Aliases: CKT netlist
GUI-button export of .CKT netlists (documented for active filters). No headless trigger exists on 2024 R2.
Path loss
The attenuation between declared transmitter and receiver references, with the propagation and normalization convention recorded.
result.path_loss
2 documented vocabulary mappings
NVIDIA Sionna RT: path_gain
approximate · direction both
Aliases: Path Gain
Path gain and path loss have inverse/sign conventions; values and units must be transformed explicitly.
Spatial radio map
A spatial map of a declared propagation metric such as received power, path loss, or field strength.
result.radio_map
1 documented vocabulary mapping
Realized gain
Gain including mismatch loss under the declared source and reference impedance convention.
result.realized_gain
4 documented vocabulary mappings
COMSOL Multiphysics: Realized Gain
exact · direction both
SIMULIA CST Studio Suite: Realized Gain
exact · direction both
Altair Feko: Realised Gain
exact · direction both
Aliases: Realized Gain
Ansys HFSS: RealizedGainTotal
exact · direction both
Aliases: db(RealizedGainTotal)
Received power
Power delivered to a receiver under its declared impedance, polarization, and link-budget convention.
result.received_power
2 documented vocabulary mappings
Remcom Wireless InSite: Received Power
exact · direction both
Scattering parameters
Complex network scattering coefficients referenced to declared ports and impedances. They are not fields and do not replace field monitors.
result.s_parameters · S-parameters, S matrix
12 documented vocabulary mappings
Ansys Lumerical FDTD: S result
exact · direction both
Aliases: S-parameters, S-parameter sweep
COMSOL Multiphysics: S-parameter
exact · direction both
Aliases: S-parameters, emw.S11
SIMULIA CST Studio Suite: S-Parameters
exact · direction both
Aliases: S-Parameters [Magnitude in dB]
Altair Feko: S-Parameters
exact · direction both
Ansys HFSS: S Parameters
exact · direction both
Aliases: S Parameter, S matrix, S(1,1)
Meep: get_eigenmode_coefficients
Simulation.get_eigenmode_coefficients
conditional · direction both
Aliases: mode decomposition
S-parameters require normalized incident and scattered modal coefficients; the API result is not itself an S matrix.
Requires: reference normalization; mode monitor
Nuhertz FilterSolutions: Touchstone Export
broader · direction both
GUI-button export. Documented Touchstone exports carry Z/Y network parameters, not only S-parameters. No headless trigger exists on 2024 R2.
openEMS: S-Parameters
exact · direction both
Aliases: uf_ref, uf_inc
Remcom Wireless InSite: S-Parameters
exact · direction both
Aliases: S Parameters
Remcom XFdtd: S-Parameters
exact · direction both
Aliases: S Parameters
MetaClaw TMM: compute_s_parameters
TMMOptimizer.compute_s_parameters
exact · direction both
Aliases: S11, S12, S21, S22
MetaClaw WiTwin Adapter: S11
narrower · direction both
Aliases: s11_mag_db, s11_phase_deg
The current adapter exports only reflection coefficient S11, not a full S-parameter matrix.
Sensor or monitor
A modeled observation or monitoring definition that samples or integrates a quantity at specified locations or regions. It may represent a numerical monitor rather than a physical instrument.
sensor
https://meep.readthedocs.io/en/latest/Python_User_Interface/#fluxregion
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_solver.36.011.html
2 documented vocabulary mappings
Field monitor
A requested field sample over a point, line, surface, or volume at declared frequencies or times.
sensor.field_monitor
5 documented vocabulary mappings
Ansys Lumerical FDTD: Frequency-domain field and power monitor
addpower
exact · direction both
Aliases: DFT monitor, Power monitor, addpower
SIMULIA CST Studio Suite: Field Monitor
exact · direction both
Meep: add_dft_fields
Simulation.add_dft_fields
exact · direction both
Aliases: DFT field monitor
openEMS: AddDump
exact · direction both
Aliases: Field Dump, AddProbe
Remcom XFdtd: Field Sensor
exact · direction both
Aliases: Field Monitor
Monitor sampling frequency
The frequency sample(s) at which a monitor stores a result; it is separate from the solve frequency unless the solver couples them.
sensor.frequency
4 documented vocabulary mappings
SIMULIA CST Studio Suite: Monitor Frequency
exact · direction both
Meep: fcen
exact · direction both · scope monitor
Aliases: monitor center frequency
openEMS: frequency
exact · direction both · scope DFT_or_NF2FF
Remcom XFdtd: Frequency Sensor
exact · direction both
Aliases: Frequency Monitor
Port or mode monitor
A monitor that records port voltage, current, modal amplitudes, or power for network and balance calculations.
sensor.port_monitor
4 documented vocabulary mappings
Ansys Lumerical FDTD: Port
broader · direction both · scope monitor_role
The same Port object also supplies modal-interface and optional source behavior.
SIMULIA CST Studio Suite: Port Signal
approximate · direction both · scope 1d_results
Meep: add_mode_monitor
Simulation.add_mode_monitor
exact · direction both
Aliases: mode monitor
openEMS: calcPort
exact · direction both
Aliases: Port Probe
Study configuration
An analysis plan that selects equations, parameters, solution steps and requested outputs for a model. It is broader than a single frequency, a solver method or the execution of one job.
study
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.hfss.Hfss.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_solver.36.011.html
2 documented vocabulary mappings
Frequency specification
Frequency values and ranges used for solving, exciting or sampling a study. Their role must be specified: an adaptive mesh frequency, source frequency and output sample frequency are not interchangeable.
study.frequency
https://aedt.docs.pyansys.com/version/stable/API/SetupTemplatesHFSS.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_solver.36.027.html
2 documented vocabulary mappings
Ansys HFSS: MultipleAdaptiveFreqsSetup
narrower · direction to_canonical · scope documentation_group
This HFSS setup structure lists adaptive frequencies and criteria, not necessarily the output sweep or excitation spectrum. Documentation-only category mapping; not an executable translation.
https://aedt.docs.pyansys.com/version/stable/API/SetupTemplatesHFSS.html
Sweep point count
The number of samples requested across a sweep. It specifies sampling density, not necessarily the number of independent field factorizations.
study.frequency.points
2 documented vocabulary mappings
Altair Feko: Number of Frequencies
exact · direction both · scope continuous_frequency_range
Aliases: Frequency Samples
Ansys HFSS: RangeCount
exact · direction both · scope frequency_sweep
Aliases: Sweep Points
Solve or adaptive frequency
The primary frequency at which the adaptive or single-frequency solution is solved.
study.frequency.solve · solution frequency, adaptive frequency
6 documented vocabulary mappings
COMSOL Multiphysics: Frequency
exact · direction both · scope frequency_domain_study
Aliases: freq, plist
SIMULIA CST Studio Suite: Adaptation Frequency
narrower · direction both · scope frequency_domain_solver
Altair Feko: Single Frequency
exact · direction both · scope configuration
Aliases: Frequency
Ansys HFSS: Frequency
setup.props.Frequency
exact · direction both · scope analysis_setup
Aliases: Solution Frequency
MetaClaw TMM: target_freq_idx
GlobalConfig.target_freq_idx
approximate · direction both
Aliases: target frequency
The native value is an index into the configured sweep, not a frequency quantity.
MetaClaw WiTwin Adapter: frequency_ghz
exact · direction both · scope adapter_model
Sweep start frequency
The lower bound of a requested frequency sweep, including its unit and whether the endpoint is included.
study.frequency.start
4 documented vocabulary mappings
SIMULIA CST Studio Suite: Frequency Range Min
exact · direction both · scope solver
Aliases: Fmin
Altair Feko: Start Frequency
exact · direction both · scope continuous_frequency_range
Ansys HFSS: RangeStart
exact · direction both · scope frequency_sweep
Aliases: Start Frequency
MetaClaw TMM: freq_start
GlobalConfig.freq_start
exact · direction both
Sweep frequency step
The frequency increment for a stepped sweep. It is mutually constrained with start, stop, and point count.
study.frequency.step
2 documented vocabulary mappings
Ansys HFSS: RangeStep
exact · direction both · scope frequency_sweep
Aliases: Sweep Step
MetaClaw TMM: freq_step
GlobalConfig.freq_step
exact · direction both
Sweep stop frequency
The upper bound of a requested frequency sweep, including its unit and whether the endpoint is included.
study.frequency.stop
4 documented vocabulary mappings
SIMULIA CST Studio Suite: Frequency Range Max
exact · direction both · scope solver
Aliases: Fmax
Altair Feko: End Frequency
exact · direction both · scope continuous_frequency_range
Aliases: Stop Frequency
Ansys HFSS: RangeEnd
exact · direction both · scope frequency_sweep
Aliases: Stop Frequency
MetaClaw TMM: freq_stop
GlobalConfig.freq_stop
exact · direction both
Solution formulation
The analysis category selected within a solver, such as a driven modal or terminal network, transient response or eigenproblem. Categories differ between products and do not imply an exact cross-solver substitution.
study.solution_type
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.hfss.Hfss.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_environment.18.43.html
2 documented vocabulary mappings
Modal network solution
A driven network formulation whose unknowns are modal fields and whose outputs can include port waves and S-parameters.
study.solution_type.modal_network
1 documented vocabulary mapping
Terminal network solution
A driven network formulation using terminal voltages and currents, useful where conductor terminals define the circuit ports.
study.solution_type.terminal_network
1 documented vocabulary mapping
Frequency sweep type
The strategy for evaluating a study over multiple parameter or frequency values. Direct point solves, interpolation and continuation have different error controls and reuse behavior.
study.sweep_type
https://aedt.docs.pyansys.com/version/stable/API/Setup.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_solver.36.011.html
2 documented vocabulary mappings
Ansys HFSS: SweepHFSS
narrower · direction to_canonical · scope documentation_group
This class owns HFSS sweep definitions; the actual discrete, interpolating or fast type must still be specified. Documentation-only category mapping; not an executable translation.
https://aedt.docs.pyansys.com/version/stable/API/Setup.html
Discrete sweep
A sweep that evaluates the requested frequency points as separate full solutions or discrete interpolations according to the solver implementation.
study.sweep_type.discrete
1 documented vocabulary mapping
Ansys HFSS: Discrete
exact · direction both · scope frequency_sweep
Fast or broadband sweep
A solver-specific accelerated broadband sweep; equivalence across tools is usually conditional.
study.sweep_type.fast
1 documented vocabulary mapping
Interpolating sweep
A sweep that solves selected anchor frequencies and interpolates a validated response across the requested band.
study.sweep_type.interpolating
2 documented vocabulary mappings
COMSOL Multiphysics: Adaptive Frequency Sweep
narrower · direction both · scope study
COMSOL adaptive frequency sweep is a solver-specific rational/interpolating sweep workflow.
Solver workflow containers
The ordered preparation, configuration, execution and interpretation steps of a simulation project, together with their persisted artifacts and ownership. A workflow description is not evidence that its steps have run.
workflow
https://aedt.docs.pyansys.com/version/stable/API/_autosummary/ansys.aedt.core.hfss.Hfss.html
https://doc.comsol.com/6.3/doc/com.comsol.help.comsol/comsol_ref_environment.18.05.html
2 documented vocabulary mappings
Physics model container
The solver design or scene containing the physical objects and their assigned properties.
workflow.model
10 documented vocabulary mappings
Ansys Lumerical FDTD: FDTD project
exact · direction both
Aliases: FSP project
COMSOL Multiphysics: Component
exact · direction both · scope model_builder
Aliases: Component 1
SIMULIA CST Studio Suite: 3D Model
exact · direction both · scope navigation_tree
Ansys HFSS: Design
exact · direction both · scope design
Meep: Simulation
meep.Simulation
exact · direction both
openEMS: ContinuousStructure
exact · direction both · scope csxcad
Aliases: CSX
Remcom XFdtd: Simulation Project
exact · direction both · scope model
MetaClaw TMM: OptimizationConfig
config.OptimizationConfig
exact · direction both
MetaClaw WiTwin Adapter: SceneBase
witwin.core.SceneBase
exact · direction both
Project container
The persisted container that owns one or more designs, geometry, materials, setups, and result references.
workflow.project
7 documented vocabulary mappings
COMSOL Multiphysics: Model
broader · direction both · scope model_file
COMSOL uses Model as its top-level persisted container rather than a separate project object.
SIMULIA CST Studio Suite: Project
exact · direction both · scope project
Altair Feko: CADFEKO Model
exact · direction both · scope cadfeko
Aliases: Model
Ansys HFSS: Project
exact · direction both · scope project
Nuhertz FilterSolutions: Filter Project
ftr
exact · direction both
Aliases: ftr project, ftr file
Plain ASCII key=value project file; format verified against shipped Examples on 2024 R2.
Remcom Wireless InSite: Project
exact · direction both · scope project
Remcom XFdtd: Project
exact · direction both · scope project
Solver setup
The solver-specific analysis setup that turns a study into executable numerical settings. A mapped name alone does not create a valid setup.
workflow.setup
7 documented vocabulary mappings
Ansys Lumerical FDTD: FDTD simulation region
addfdtd
exact · direction both
Aliases: FDTD solver region, addfdtd
COMSOL Multiphysics: Solver Configuration
exact · direction both · scope solver
SIMULIA CST Studio Suite: Solver Parameters
exact · direction both · scope solver
Altair Feko: Solution Settings
exact · direction both · scope configuration
Ansys HFSS: Analysis Setup
exact · direction both · scope analysis
Aliases: Setup
openEMS: FDTD
exact · direction both · scope openems
Aliases: openEMS object
MetaClaw TMM: GlobalConfig
config.GlobalConfig
exact · direction both
Study or analysis container
A declared computational question: formulation, sources, boundaries, frequency or time range, mesh controls, and requested outputs.
workflow.study
3 documented vocabulary mappings
COMSOL Multiphysics: Study
exact · direction both · scope model_builder
Altair Feko: Configuration
exact · direction both · scope solution_configuration
Remcom Wireless InSite: Study Area
narrower · direction both · scope propagation
A Study Area is the Wireless InSite container that binds geometry and propagation settings.
Source: python/simulation/terminology/registry.py + mappings/*.toml. Browsing does not run a model, translate solver artifacts or launch a solver.