ELECTRONIC AND
ELECTROMECHANICAL SIMULATIONS
USING ANSOFT PRODUCTS
Juliano Fujioka Mologni
17/05/2009
ANSYS Solutions to the Electronics Industry
ANSYS Multiphysics
Solutions
Electromagnetic
Simulation
Low
Frequency
and EM
High
Frequency
Mechanical
Simulation
Implicit
ANSYS
HFSS
Mechanical
Maxwell
Siwave
ANSYS
Q3D
Designer
Structural
Simplorer
Nexxim
ANSYS
Professional
Explicit
Computational Fluid
Dynamics (CFD)
Electronics
cooling
ANSYS
AUTODYN
ANSYS
LS-Dyna
ANSYS
Icepak
General CFD
ANSYS CFD
Exclusive Technology: Domain Decomposition
• Efficient solution for very large
electromagnetic problems;
• Naturally parallelizable to take
advantage of high-performance
computing resources;
– Distributed via Message
Passing Interface (MPI).
• Automatic generation of domains
by mesh partitioning:
– User friendly;
– Load balance.
Distributes mesh sub-domains
to networked processors and memory
HF - HFSS
Full wave IE MoM Solver
• Hybrid technique (FEM + IE MoM) to solver very
large field problems
AH64 - Helicopter
Predator @VHF 350MHz
HF - HFSS
Parabolic Satellite Dish Antennas
Case: Submarine RCS and antenna
HF - HFSS
• Radar Cross Section Analysis
• Full EMAG analysis of all excitations: Antennas,
waveguides, Incident Waves, Enforced fields.
• Bounding airbox is 12.5λ x 22λ x 8λ or 2200λ3
0.2GHz VLF Antenna
Case: Missile RCS
HF - HFSS
AGM 65 Maverick Missile
2GHz: 2.3 GB in 15 minutes
6GHz: 4.8 GB in 90 minutes
10GHz: 11.1 GB, 8hr 13minutes
• Analysis at 2, 6 and 10 GHz
181 incident angles
Signal and Power Integrity
HF – HFSS, Siwave, Designer
•
Package
Backplane
MS
Connector Daughter Card
SL
Package
SL
+
+
-
– High Speed Channel Design
-
Via
Via
SI – Maintain “integrity” of digital
signal from point A to point B
Via
•
•
•
•
PI – Maintain ”integrity” of DC
power delivery to digital
components in system
– Effectively a sub-discipline of
SI
In combination, biggest potential
and most wide open market for
high performance simulation tools.
SI – transient analysis
PI – linear frequency analysis
EMI/EMC: An Effect of SI and PI
Power Integrity
RFI
HF – HFSS, Siwave, Designer
Signal Integrity
EMI
Case: Fields From DVD Player – Coupling SIWave/Designer and HFSSS
•
•
•
Electric (SIWave/Designer) and Emag (HFSS)
coupling enables Full System Simulation
Complete EMC/EMI Spectrum analysis with real
signals - reduces ANATEL certification timeline
and time-to-market
Analysis of Emissions radiated by PCB high speed
traces and Sources
Case: Fields From DVD Player – Coupling SIWave/Designer and HFSSS
Full System Analysis: Radiated source fields from DVD @ 125 MHz
(PCB radiation plus external housing modeled in HFSS)
XY Plot 1
Ansoft Corporation
HFSSModel1
20.00
•
10.00
0.00
-10.00
3m Sphere (dBuVolts)
-20.00
-30.00
-40.00
-50.00
Curve Info
-60.00
3M Sphere Max E Field values
Setup1 : Sw eep1
-70.00
-80.00
-90.00
1.00
10.00
100.00
Freq [MHz]
BER, Eye Diagram, Signal Integrity
1000.00
Radiated Emission is affected by the
external Housing
Full System Model
(Combining all the models
Tag Circuitry
Realistic Environment
Transponder Circuitry
Full System Field Results
• Full System TX Antenna patterns
Full System Field Results
Tag located on front
of shipping container
Main lobe points in wrong direction
Tag located on top of
shipping container
Main lobe points in proper direction
Maxwell – Low Frequency Solution
Electromechanical devices converting
- Electrical power to mechanical power as motor
- Mechanical power to electrical power as generator
Simplorer – Integration Software
ANSYS Icepak
Simplorer
System Design
PMSYNC
IA
A
RMxprt
Motor Design
Torque
A
IB
J
D2D
ICA:
A
IC
PP := 6
A
GAIN
Q3D
Parasitics
PExprt
Magnetics
ANSYS Mechanical
Thermal/Stress
Maxwell 2-D/3-D
Electromagnetic Components
Model order
Reduction
Co-simulation
Field Solution
Model Generation
Simplorer – Integration Software
ANSYS Mechanical Coupling
Ansoft Solutions
Ansoft provides multiple techniques (IE, HPC, Domain Decomposition)
to solve very large field problems.
Complete EMAG, Signal Integrity and electric circuitry coupled solution