High Frequency Performance of Modular Wafer Probecards â A ...

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Optimization #1 –Signal Via Stubs • The Stub is the Unnecessary Part of the Via Beyond the Trace and it Causes Reflections • Drilling Removes the Stub • Should be Considered for Signals > 1 GHz • Ex: 0.250” PCB 16
Optimization #2 –Signal Layer Locations • Selecting Signal Layers that Minimize the Length of the Signal Via can Improve Performance • Should be Considered for Signals > 1 GHz • Ex: 0.250” PCB 17
Page 1 and 2: High Frequency Performance of Modul
Page 3 and 4: Technology Overview -S22 • Probe
Page 5 and 6: Technology Overview -S23 • Princi
Page 7 and 8: Motivations for this Work • Simul
Page 9 and 10: Simulation Overview - Path Descript
Page 11 and 12: Simulation Overview - Path Descript
Page 13 and 14: Measurement Correlation -S23 • Pa
Page 15: Performance - Optimization • Desi
Page 19 and 20: Optimization #3 -PCB Material • S
Page 21 and 22: Performance - Adding Probe Head •
Page 23 and 24: Performance -1 Gbps Eye Diagram •
Page 25 and 26: Performance Overview • Performanc

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High Frequency Performance of Modular Wafer Probecards â A ...