3D Simulations for Signal Integrity

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Time Domain Reflectometry � To create a TDR plot in HFSS � HFSS > Results > Create Terminal Solution Data Report > Rectangular Plot
Time Domain Reflectometry � Positive-going spikes indicate inductive changes to the impedance � Negative-going spikes indicate capacitive changes to the impedance � For the trace looking from the microstrip, we first see the inductance of the trace, then the capacitance of the via transition �� For better time (spatial) resolution resolution, we would need a smaller sampling time time, and thus a higher stop frequency <strong>for</strong> our sweep
Page 1 and 2: 3D Simulations for Signal g Integri
Page 3 and 4: Prerequisites � Need some guideli
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: Time Domain Reflectometry � TDR t
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

3D Simulations for Signal Integrity

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