• Conference
    Jan 30-Feb 1, 2018
  • Expo
    Jan 31-Feb 1, 2018
  • Santa Clara Convention
    Center
    | Santa Clara, CA

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Fast Resonance Reduction Using Eigenmode Solution and Custom Metrics

Location: Ballroom A
Pass Types: 2-Day Pass, All Access Pass, Alumni All Access Pass - Get your pass now!
Track: 14. Modeling and Analysis of Interconnects
Audience Level: Advanced
Format: 45-Minute Technical Session
Audience Level: Advanced
Recording: TBD

The presence of resonant frequencies in electromechanical devices is one of the primary issues that inhibits the quality of high-speed data transmission. Signal integrity engineers typically spend a significant portion of the design process on finding and suppressing resonances; this is primarily due to the iterative nature and computational expense of using conventional frequency-domain solvers. This paper explores an alternative design approach to quickly identifying resonances in multi-ground connector and circuit board structures. The method uses custom metrics and eigenmodes to discern if a particular mode is excited; several examples are also presented.

Takeaway

Combine custom metrics and eigenmode analysis to understand and address resonances in high-speed interconnect designs. Use a fast, systematic method to reduce resonances, rather than an iterative, trial-and-error approach. Address root-cause problems from a physical point-of-view, resulting in more robust designs.

Intended Audience

3D field solver experience (HFSS, CST), signal integrity and channel analysis skills