Antenna simulation software

2. R.Darwin, AP- II, Kumaraguru College of
Technology2
Antenna Simulation Software: An
Overview

3. Agenda
1
• Why is EM Simulation becoming
increasingly important?
2
• Antenna Simulation Software's
• Solving Methodologies
3
• Which Electromagnetic Simulator
Should I Use?
R.Darwin, AP- II, Kumaraguru College of
Technology3

4. Computer programs to compute approximate
solutions to Maxwell’s equations to calculate
antenna performance, electromagnetic
compatibility, radar cross section and
electromagnetic wave propagation.
EM Simulation?
R.Darwin, AP- II, Kumaraguru College of
Technology4

5. Why EM Simulation?
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6. Higher Frequency of
operation
Higher Packing
Densities
Higher Complexity
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7. The moment you move away from the
very simplest designs, analytical
methods become mostly useless.
In order to predict what even a simple
antenna or waveguide will do, you
almost always have to simulate.
To be able to accurately predict the
behavior of structures without having to
build and test them.
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8. 1
• Design
2
• Prototype
3
• Measurement
Conventional Method
MeasurementprototypeDesign
Virtual Environment
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Today

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10. Computational Electromagnetic
Software Products
• Dassault
Systems(Simulia)
• Altair Engineering
• Keysight
Technologies
• Ansys
HFSS ADS
CSTFEKO
• RF
Globalnet
• COMSOL
• Simulia• REMCOM
XFdtd
Antenna
Magus
ie3d
COMSOL
Multiphysics
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Technology10

11. HFSS
• High Frequency Structure Simulator
ADS
• Advanced Design Systems
FEKO
• FEldberechnung für Körper mit beliebiger
Oberfläche
CST
• Computer Simulation Technology
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12. XFdtd
• X (Window System) Finite Difference
Time Domain
ie3D
• Integral Equation 3 Dimensional
COMSOL Multiphysics
Antenna Magus
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13. Solving Methodologies
Method Of Moments
Finite Element
Method
Finite Difference
Time Domain
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19. • MOM, FEM, FDTD, HybridHFSS
• FDTDXFdtd
• FEM,BEM
COMSOL
Multiphysics
• MOM, FEM, FDTD,
MLFMM,POFEKO
• MOM, FEM, FDTD,POCST
• MOMie3DR.Darwin, AP- II, Kumaraguru College of
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21. Several key EM simulation technologies have
emerged over recent years, these include the
Method of Moments (MoM),
Finite Element (FEM) and
Finite Difference Time Domain (FDTD)
solutions.
Although in principal these technologies
could be used to solve the same problems
there are often good practical reasons why
one particular simulator is better suited to
solving a particular problem type
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22. Finite Element Method(FEM)
( Divide and Conquer)
Main Problem
Split into Smaller Problems
Solve smaller problems
Reassemble
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23. Area?
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24. Element discretion into 1D, 2D & 3D
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28. Method of Moments
The Method of Moments (MoM) is a rigorous, full-
wave numerical technique for solving open
boundary electromagnetic problems. The method
of numerical solution of integral equations is
known as the Method of Moments (MoM)
We can analyze electromagnetic radiation,
scattering and wave propagation problems with
relatively short computation times and modest
computing resources
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Technology28

29. It solves the integral form of Maxwell’s equations as
opposed to their differential forms that are used in the
finite element or finite difference time domain methods.
In a 3D MoM simulation, the currents or fields on the
surface of a structure are the unknowns of the problem.
Unbounded medium is modeled using the free-space
Green's functions.
The Green’s functions are the analytical solutions of
boundary value problems when they are excited by an
elementary sourceR.Darwin, AP- II, Kumaraguru College of
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30. Green’s Function
 Assume a device is decomposed into numerous
identical small elements.
 After analysis the overall response is
superimposition of response of all individual tiny
elements.
 Response of one of these tiny elements is termed
as Green’s Function.
 Overall response can be obtained by integrating
the responses of these tiny elements.
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33. Key Steps in a Simulation
Process
Step-1
• Creation of the Physical Model ( layout or
geometry)
Step-2
• EM Simulation Setup ( Port assignment,
Defining Boundary)
Step-3
• Performing the EM Simulation ( Meshing)
Step-4
• Post-processing( Calculation of S-parameters,
Far Field Radiation Patterns etc)
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34. Which Electromagnetic Simulator
Should I Use?
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Technology34

35. Selecting the ‘Right’ Simulation
Method for the Job
How easy is it to create the geometric
model?
Does the EM simulation environment
link easily with the circuit simulation
tools?
Do you need to be an ‘EM guru’ to
run the tools?
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Technology35

36. Whether the geometry is ‘Planar’ in
nature or whether it is genuinely ‘3D’.
If ‘Planar’ structures, MOM provides
the most efficient simulation
method.
Whilst for true ‘3D’ structures FEM
or FDTD will usually be more
appropriate.
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Technology36

37. Frequency
Domain
MoM
FEM
Eg.Analysis of Filters,
Cavities, Resonators etc
Time
Domain
FDTD
Both MoM and FEM solve natively in the
frequency domain, this makes them more
appropriate than FDTD for the analysis of
‘High Q’ circuits.
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38. FEM provides the most efficient
solution to problems with large
numbers of ports.
Small number of ports but is
electrically large then FDTD provides
the most memory efficient simulations.
• Applications better suited to FDTD simulation
include the likes of antenna placement on
vehicles/aircraft and the analysis of antenna
performance in the presence of detailed
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44. R.Darwin, AP- II, Kumaraguru College of
Technology44

45. R.Darwin, AP- II, Kumaraguru College of
Technology45

46. ANTENNA MAGUS
ANTENNA DESIGN SOFTWARE
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Technology46

47. Antenna Magus is a new software tool to help engineers accelerate
the antenna design and modeling process. It has a huge database
of designed antennas which can be exported to CST MICROWAVE
STUDIO® for further analysis and optimization.
Validated antenna models can be exported to CST Studio Suite®
from a huge antenna database of over 350 antennas, where in-
depth analysis and optimization can be performed.
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50. WHAT’S NEW IN ANTENNA MAGUS 2020.3
ANTENNA DESIGN SOFTWARE
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Technology50
New Devices and Extensions:
1. Cavity-backed Logarithmic Slot Spiral with Absorber
2. Patch Antenna on Elliptic Ground Plane Aperture with Offset Sector Disc
3. Planar Array with Scan Angle
4. 5GSpecifications added to Cellular Bands
5. Expanded the planar physical array layout to allow an excitation taper and
progressive phase shift
New features, extensions and improvements:
1. Added quick access import and collection buttons on the Element Pattern
palette
2. Distribution Matrices can now be exported from the Synthesized View in the
Array Tool
3. Updated the color picking mechanism for Array Element Patterns

51. References:
1.https://www.3ds.com/
2. https://www.ansys.com/
3. https://altairhyperworks.com/feko/
4.https://www.rfglobalnet.com/
4. https://www.keysight.com/in/en/home.html
5. https://www.remcom.com/xfdtd-3d-em-
simulation-software
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