emc simulation for automotive ethernet€¦ · automotive ethernet •next generation signal bus...
TRANSCRIPT
![Page 1: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/1.jpg)
3DS
.CO
M©
Das
saul
tSys
tèm
es| C
onfid
entia
l Inf
orm
atio
n | 1
2/5/
2018
| ref
.: 3D
S_D
ocum
ent_
2015
EMC Simulation for
Automotive Ethernet
Dr Tamara Monti
Radio Technology SIG ‘EMC – Avoiding the nightmare’ Cambridge, December 4th 2018
![Page 2: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/2.jpg)
2
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Active Exhaust Noise Suppression
Active Suspension
Active Vibration Control
Adaptive Cruise Control
Adaptive Front LightingAirbag Deployment
Antilock Braking
Autonomous Emergency Braking
Battery Management
Blind Spot Detection
Cabin Environment Controls
Entertainment System
Communication Systems
Convertible Top Control
Cylinder Deactivation
Driver Alertness Monitoring
Electronic Seat Control
Electronic Stability Control
Electronic Throttle Control
Electronic Toll Collection
Electronic Valve Timing
Engine ControlHead-Up Displays
Hill Hold Control
Idle Stop-Start
Instrument Cluster
Intelligent Turn Signals
Interior Lighting
Lane Departure WarningLane Keeping Assist
Navigation
Night Vision Systems
On-Board Diagnostics
Parking Systems
Precrash Safety
Rear-view Camera
Regenerative Braking
Remote Keyless Entry
Security Systems
Tire Pressure Monitoring
Traction Control
Traffic Sign Recognition
Transmission Control
Windshield Wiper Control
![Page 3: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/3.jpg)
3
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Powertrain
• Latency: < 10 µs
• Bandwith: Low
• CAN
• FlexRay
Chassis
• Latency: < 10 µs
• Bandwith: Low
• CAN
• FlexRay
Body & Comfort
• Latency: < 10 ms
• Bandwith: Low
• CAN
• LIN
ADAS
• Latency: < 250 µs
• Bandwith: 50 Mbps per camera
• FlexRay
• MOST
• LVDS
• Ethernet
Infotainment
• Latency: < 10 ms
• Bandwith: High and growing
• Ethernet
In Vehicle Communication Standards
![Page 4: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/4.jpg)
4
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Scope of EMC/EMI
kHz Inverter, Voltage Regulators MHz
Radio, Communication Systems
GHzDigital electronics, Radar
The ability of an electrical system to work
• in its electromagnetic environment
• without influencing the surrounding devices (emissions)
• or being influenced by surrounding equipment (susceptibility)
EMC compliance is crucial to all products!
• Susceptibility and emissions are a well regulated area
• Automotive OEM impose strict standards on components
![Page 5: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/5.jpg)
5
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Conducted Emission Limits
From:
A GENERIC AUTOMOTIVE (TIER1)
EMC TEST STANDARD Martin O’Hara
The Automotive EMC Network, P.O. Box
3622, Newport Pagnell, MK16 0XT
http://www.autoemc.net/
![Page 6: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/6.jpg)
6
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
EMC Simulation in the Design Process
EMC at all Stages of the Design Process
• multiple troubleshooting iterations
• high effort and costs to correct
• delayed time to market
Cost of
change
Time
Requirements Concept Product DevelopmentManufacturing
![Page 7: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/7.jpg)
7
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Simulation Model
![Page 8: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/8.jpg)
8
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
![Page 9: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/9.jpg)
9
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
![Page 10: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/10.jpg)
10
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
![Page 11: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/11.jpg)
11
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
![Page 12: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/12.jpg)
12
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
![Page 13: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/13.jpg)
13
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
![Page 14: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/14.jpg)
14
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
![Page 15: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/15.jpg)
15
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Field Circuit Coupling
![Page 16: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/16.jpg)
16
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
3D Full-Wave Solution
Finite Element Method
Frequency Domain
Adaptive Meshing
0-200 MHz in 60 samples
26 Ports
3h15m on dual Xeon E5-2643
28 GB RAM
![Page 17: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/17.jpg)
17
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Decaps
IC
Signal Path
Connector
LISN
Reference
PCB as
Termination
IC
![Page 18: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/18.jpg)
18
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
PRBS Signal & Spectrum
PRBS Signal PRBS Spectrum
Ideal differential driver
Use as source for AC simulation
![Page 19: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/19.jpg)
19
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
BroadR vs. CAN
![Page 20: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/20.jpg)
20
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Common and Differential Mode
![Page 21: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/21.jpg)
21
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Modes on Differential PairCalculate the differential and common mode impedance
using a waveguide port
![Page 22: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/22.jpg)
22
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Modes on Differential Pair
Differential 101 Ohm Common 35 Ohm
![Page 23: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/23.jpg)
23
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Common and Differential Mode
Ideal Excitation
1V differential
1V common mode
![Page 24: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/24.jpg)
24
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Current at Driver – 33 MHz
Differential ModeCommon Mode
![Page 25: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/25.jpg)
25
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Current at Connector – 33 MHz
Differential ModeCommon Mode
![Page 26: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/26.jpg)
26
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Common Mode
Differential to Common Mode Conversion
• Created due to non-ideal symmetry
• Only the common mode contributes to conducted emission
Timing
• Jitter and skew in signal generation
• Depends on the silicone
• No access for the electronic designer
Geometry
• Routing Constraints
• Connectors and cable bonding
![Page 27: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/27.jpg)
27
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Conducted Emission
![Page 28: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/28.jpg)
28
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Only ConnectorEmission at LISN N
![Page 29: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/29.jpg)
29
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Cable Reference
Emission at LISN N
Emission at LISN N
![Page 30: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/30.jpg)
30
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Cable SeparationEmission at LISN N
![Page 31: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/31.jpg)
31
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Power Cables SidewardsEmission at LISN N
![Page 32: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/32.jpg)
32
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Connector PinoutEmission at LISN N
![Page 33: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/33.jpg)
33
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Untwisting at ConnectorEmission at LISN N
![Page 34: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/34.jpg)
34
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Bad PCB Layout + Connector + UntwistingEmission at LISN N
![Page 35: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/35.jpg)
35
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Countermeasures
![Page 36: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/36.jpg)
36
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Common Mode Choke
![Page 37: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/37.jpg)
37
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Common Mode ChokeCommon Mode at Rx IC
Emission at LISN N
![Page 38: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/38.jpg)
38
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Common Mode
Differential to Common Mode Conversion
• Created due to non-ideal symmetry
• Only the common mode contributes to conducted emission
Timing
• Jitter and skew in signal generation
• Depends on the silicone
• No access for the electronic designer
Geometry
• Routing Constraints
• Connectors and cable bonding
![Page 39: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/39.jpg)
39
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Signal Skew
0.1 ns skew
![Page 40: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/40.jpg)
40
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Signal SkewEmission at LISN N
![Page 41: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/41.jpg)
41
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Signal SkewEmission at LISN N
![Page 42: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/42.jpg)
42
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Choke PositioningCommon Mode at Rx IC
Emission at LISN N
![Page 43: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/43.jpg)
43
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Ferrite Clamp – Untwist longEmission at LISN N
beginning end
![Page 44: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/44.jpg)
44
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
ShieldingEmission at LISN N
![Page 45: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/45.jpg)
45
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
ShieldingEmission at LISN N
![Page 46: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/46.jpg)
46
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Radiated Emission
![Page 47: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/47.jpg)
47
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Radiated Emission Workflow
Far field probes All probe resultsWorst case envelope
![Page 48: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/48.jpg)
48
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Cable ReferenceElectric Field @ 1m
![Page 49: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/49.jpg)
49
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Connector PinoutEmission at LISN N
![Page 50: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/50.jpg)
50
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Untwisting at ConnectorEmission at LISN N
![Page 51: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/51.jpg)
51
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Power Cables SidewardsEmission at LISN N
![Page 52: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/52.jpg)
52
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Bulk Current Injection
![Page 53: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/53.jpg)
53
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15 TEST PROBE: Fischer Custom Communications F-130aFreq. range: 10kHz – 400MHz
http://www.fischercc.com
BCI Clamp
„Circuit Modeling of injection Probes for Bulk Current Injection“ by F. Grassi et al, IEEE Transactions on Electromagnetic Compatibility Vol. 49, Issue 3, 2007.
![Page 54: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/54.jpg)
54
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
BCI ReferenceDifferential Signal at IC
300 mA injection
![Page 55: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/55.jpg)
55
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
BCI ReferenceDifferential Signal at IC
300 mA injection
![Page 56: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/56.jpg)
56
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
BCI Connector PinoutDifferential Signal at IC
![Page 57: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/57.jpg)
57
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
BCI UntwistingDifferential Signal at IC
![Page 58: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/58.jpg)
58
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
BCI UntwistingDifferential Signal at IC
![Page 59: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/59.jpg)
59
3DS
.CO
M/S
IMU
LIA
© D
assa
ultS
ystè
mes
| Con
fiden
tial I
nfor
mat
ion
| 12/
5/20
18| r
ef.:
3DS
_Doc
umen
t_20
15
Summary
Automotive Ethernet
• Next generation signal bus
• Higher frequency content
Emission Simulation
• Early design stage
• Full-wave 3D coupled to circuit simulation
Results
• Understanding common mode is the key
• Layout can have significant effect on emission
• Untwisting of the TWP at the connector has a substantial effect on emission and susceptibility
• Not all countermeasures are efficient
![Page 60: EMC Simulation for Automotive Ethernet€¦ · Automotive Ethernet •Next generation signal bus •Higher frequency content Emission Simulation •Early design stage •Full-wave](https://reader034.vdocuments.us/reader034/viewer/2022050312/5f74f6948f16777d83605e0c/html5/thumbnails/60.jpg)
60
3DS
.CO
M©
Das
saul
tSys
tèm
es| C
onfid
entia
l Inf
orm
atio
n | 1
2/5/
2018
| ref
.: 3D
S_D
ocum
ent_
2015