3D Simulations for Signal Integrity

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Goal � Use frequency domain tool, tool HFSS, HFSS to analyze and optimize passive high-speed channels � Take information from 3D electromagnetic simulations and use in time domain circuit analysis
Prerequisites � Need some guidelines for setting up simulation to have high degree of confidence that time domain simulations will be accurate �� Need to be able to modify basic model to enable optimization
Page 1: 3D Simulations for Signal g Integri
Page 5 and 6: Simulation Parameters � Solution
Page 7 and 8: Adaptive Solution Setup � The fre
Page 9 and 10: Knee Frequency - Example � Simula
Page 11 and 12: Implications of F kknee � How can
Page 13 and 14: Implications of F kknee
Page 15 and 16: � Solver - Iterative Iterative So
Page 17 and 18: Frequency Sweep Options for Time Do
Page 19 and 20: Interpolating Sweep � This method
Page 21 and 22: S11 S (dB) Interpolating Frequency
Page 23 and 24: “Active” Active S-parameters S
Page 25 and 26: Causality � Another issue when de
Page 27 and 28: Causes of Non-causality Non causali
Page 29 and 30: Frequency Dependent Materials Piece
Page 31 and 32: Frequency Dependent Data Points �
Page 33 and 34: Causality - Example � 2” 2 Coax
Page 35 and 36: Causality - Example � Another way
Page 37 and 38: DC Extrapolation � All non-linear
Page 39 and 40: INTERPRETING SIMULATION RESULTS
Page 41 and 42: Time Domain Reflectometry � TDR t
Page 43 and 44: Time Domain Reflectometry � Posit
Page 45 and 46: Geometry Manipulation � Geometry
Page 47 and 48: Geometry Manipulation
Page 49 and 50: Optimization of SI Problems � Unl
Page 51 and 52: Optimization of Via � Set trace w
Page 53 and 54:
Optimized Via - TDR � We can see
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3D Simulations for Signal Integrity

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