![Page 1: Electromagnetic Simulation Software -- tutorial · Electromagnetic Simulation Software-- tutorial --December 3, 2015 PHYS 402: E&M 2 Login to Computer Terminal Do NOT open FEKO](https://reader031.vdocuments.us/reader031/viewer/2022040902/5e7469745e305f0e9d668201/html5/thumbnails/1.jpg)
Electromagnetic Simulation
Software
-- tutorial --
December 3, 2015
PHYS 402: E&M 2
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Electromagnetic Simulation
Software
-- tutorial --
December 3, 2015
PHYS 402: E&M 2
Login to Computer Terminal
Do NOT open FEKO
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Principle Numerical 3D EM Methods
Finite Element Method (FEM)
Solves Maxwell’s equations in differential form in the frequency domain.
Entire solution volume is discretized, boundary cond. imposed explicitly.
Diff. eq. become large sparse matrix eq.
Solves matrix eq. approximately to get E(ri), and thus B(ri), J(ri), and (ri).
Finite Difference Time Domain (FDTD)
Solves Maxwell’s equations in differential form in the time domain.
Staggered E and B cubic discretization lattices (MoM/FEM triangle discr.)
Calculate E calculate B time-step forward calculate E, etc …
Method of Moments (MoM)
Solves Maxwell’s equations in integral form in the frequency domain.
(boundary conditions included in integral)
For discretized volume/surface of sources, integral eq. reduces to a matrix eq.
Solves matrix eq. exactly to get J(ri) and (ri).
Once J(ri) and (ri) are known, then compute E(ri) and B(ri).
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Commercial 3D EM Solvers
HFSS (part of ANSYS)
primary solver: FEM
also uses hybrid MoM-FEM
CST Microwave Studio (by CST) primary solver: FDTD (with some integral eq. solving also).
FEKO (part of Altair Inc.)
primary solver: MoM
also uses FEM, FDTD, and hybrid MoM-FEM.
COMSOL Multiphysics (AC/DC and RF modules)
primary solver: FEM
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Open CADFEKO
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Just in case: Adjusting the Rendering
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FEKO workflow
Constructmodel
InsertSources/Loads
Specify calculation requests
Meshmodel
Solve/Runmodel
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FEKO workflow
Constructmodel
InsertSources/Loads
Specify calculation requests
Meshmodel
Solve/Runmodel
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FEKO workflow
Constructmodel
InsertSources/Loads
Specify calculation requests
Meshmodel
Solve/Runmodel
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FEKO workflow
Constructmodel
InsertSources/Loads
Specify calculation requests
Meshmodel
Solve/Runmodel
![Page 14: Electromagnetic Simulation Software -- tutorial · Electromagnetic Simulation Software-- tutorial --December 3, 2015 PHYS 402: E&M 2 Login to Computer Terminal Do NOT open FEKO](https://reader031.vdocuments.us/reader031/viewer/2022040902/5e7469745e305f0e9d668201/html5/thumbnails/14.jpg)
FEKO workflow
Constructmodel
InsertSources/Loads
Specify calculation requests
Meshmodel
Solve/Runmodel
![Page 15: Electromagnetic Simulation Software -- tutorial · Electromagnetic Simulation Software-- tutorial --December 3, 2015 PHYS 402: E&M 2 Login to Computer Terminal Do NOT open FEKO](https://reader031.vdocuments.us/reader031/viewer/2022040902/5e7469745e305f0e9d668201/html5/thumbnails/15.jpg)
FEKO workflow
Constructmodel
InsertSources/Loads
Specify calculation requests
Meshmodel
Solve/Runmodel
![Page 16: Electromagnetic Simulation Software -- tutorial · Electromagnetic Simulation Software-- tutorial --December 3, 2015 PHYS 402: E&M 2 Login to Computer Terminal Do NOT open FEKO](https://reader031.vdocuments.us/reader031/viewer/2022040902/5e7469745e305f0e9d668201/html5/thumbnails/16.jpg)
FEKO: 3D perspective navigation
Rotation: Mouse-left-click + drag
Zoom: Shift + Mouse-left-click + drag vertical
Translate: Ctrl + Mouse-left-click + drag
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Dipole Antenna: Construction definitions
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Dipole Antenna: Construction definitions
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Dipole Antenna: Construction definitions
Add 2nd variable
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Dipole Antenna: Construction definitions
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Dipole Antenna: Construction definitions
Add “Copper” to model
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Dipole Antenna: Construct Antenna
zoom out to see full antenna
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Dipole Antenna: Construct Antenna assign material
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Dipole Antenna: Excitation Source
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Dipole Antenna: Excitation Source
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Dipole Antenna: Excitation Source
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Dipole Antenna: Excitation Source
select
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Dipole Antenna: model configuration
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Dipole Antenna: set solution Frequency
30 MHz
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Dipole Antenna: Calculation Requests
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Dipole Antenna: Calculation Requests
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Dipole Antenna: Calculation Requests
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Dipole Antenna: Mesh the model
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Dipole Antenna: Mesh the model
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Dipole Antenna: Mesh the model
re-mesh
whenever model
is modified
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Dipole Antenna: Mesh the model
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Dipole Antenna: Save the model
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Dipole Antenna: Solve the model
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Dipole Antenna: Solve the model
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Dipole Antenna: Solve the model
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Dipole Antenna: Solve the model
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Dipole Antenna: Solve the model
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POSTFEKO: Analysis of Solutions
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POSTFEKO: Analysis of Solutions
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POSTFEKO: Analysis of Solutions
step 1step 2
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POSTFEKO: Analysis of Solutions
step 1step 2
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POSTFEKO: Analysis of Solutions
step 1step 2
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POSTFEKO: Analysis of Solutions
step 1step 2
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Exercises
Calculate the Current and Far-Field (Gain or E-field)
for the following:
1. Length = /2 or
2. Length = 3/2, 2, or 5