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Bondwire Integration Challenges in E-band Systems: from PCB to Die Level
Ist Teil von
2023 53rd European Microwave Conference (EuMC), 2023, p.846-849
Ort / Verlag
European Microwave Association (EuMA)
Erscheinungsjahr
2023
Quelle
IEL
Beschreibungen/Notizen
In this paper, an approach toward impedance compensation of die to printed circuit board interconnected via bondwire is presented. A use-case is illustrated where a standard millimeter-wave bondwire interconnects between a 50-Ohm microstrip transmission line realized on top of an alumina substrate and a 50-Ohm grounded coplanar waveguide to WR12 rectangular waveguide transition. Direct interconnection showed in both simulation and measurements a 17% reduction in operational bandwidth. Furthermore, asymmetric fabrication of the bondwires caused reflection discrepancy. The proposed solution employs a T-shaped power divider technique which is compared to the classical quarter-wavelength transformer throughout this study. Theoretical modelling and simulationbased sensitivity analyses are presented for both techniques. The proposed technique, which employ two bondwires, proved to be robust and less sensitive to fabrication errors. Thus, restore the bandwidth and show better reflection.