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Contents
Contents
GdfidL v2.0: Syntax and Semantics
Warner Bruns
Contents
List of Figures
Introduction
gd1
Typical usage of
gd1
Input for
gd1
Behind the scenes: When the mesh is generated
General sections
Entry Section
-general : Annotations, filenames
-mesh : outer boundary conditions, spacings
-material : electric / magnetic properties
-lgeometry : load a previously used geometry
Geometric primitives
-brick: a rectangular brick
-gccylinder: A circular cylinder in general direction
-ggcylinder: A general cylinder in general direction
-gbor: A general body of revolution in general direction
-stlfile: CAD import via STL-file
-geofunction: Analytic description
-transform: Rotations, translations
-volumeplot: shows the generated mesh
-cutplot: shows the generated mesh in a selected meshplane
Solver sections: Eigenvalues and driven time domain problems
-eigenvalues
-fdtd: Compute time dependent fields
-fdtd/-ports
-fdtd/-pexcitation: What port-mode should be excited
-fdtd/-lcharge: Properties of relativistic line charges
-fdtd/-windowwake: Wakepotential in a moving computational window
-fdtd/-clouds: Properties of nonrelativistic clouds of charge
-fdtd/-linitialfields: Specifies the initial fields
-fdtd/-voltages: Voltage sources between selected points
-fdtd/-decaytime: Z-dependent damping factor
-fdtd/-time: minimum / maximum time, when to store
-fdtd/-storefieldsat: when to store
-fdtd/-fexport: ASCII export of selected fields at selected times
-fdtd/-smonitor: Monitoring of scalar field quanitities
gd1.pp
-base
-general
-3darrowplot: Plots 3D Fields together with the material boundaries.
-lineplot: Plots a field component along an axis.
-glineplot: Plots a field component along a line.
-2dplot: Plot a component on a plane
-energy: compute energy in E or H fields
-lintegral: computes line integrals
-wlosses: Compute wall losses from H-fields
-dlosses: Compute dielectric losses
-flux: Compute flux of fields through rectangular areas
-clouds: Analyse properties of free moving charges
-sparameters: Computes scattering parameters from time dependent data
-material: Conductivities of electric materials
-wakes: longitudinal and transverse wakepotentials
-totouchstone: convert fri-data to touchstone format
-combine: Build scattering matrices from other scattering parameters
-smonitor: analyse scalar time dependent signals
-fexport: export 3D-Fields to ASCII files
-2dmanygifs: Create many gif files
-3dmanygifs: Create many gif files
GdfidLs command language
Variables
Defining variables from outside
Arithmetic expressions
do-loops
if elseif else endif
Macros
Result-variables
Supplied Macros
Q-Values
Q-Values: Real fields
Q-Values: Complex fields
Computing normalized shunt impedances
R/Q: Real fields
R/Q: Complex fields
Examples
Wake Potentials
Scattering Parameters
Computing Brillouin-diagrams
