Characterization Of On-Die Interconnects Exhibiting Slow-Wave Propagation
2019 IEEE INTERNATIONAL SYMPOSIUM ON ELECTROMAGNETIC COMPATIBILITY, SIGNAL AND POWER INTEGRITY (EMC+SIPI)(2019)
Abstract
This paper presents the characterization of on-die interconnects fabricated on SOI technology exhibiting slow-wave propagation. The characterization relies on building a frequency dependent transmission line model from two measured lines of different lengths. The measured S-parameters and TDR data arc found to exhibit behaviors unlike those typically observed in PCB interconnects. The odd behaviors are due to the so-called slow-wave mode of propagation. This effect occurs below 1 GHz and manifests itself by very large losses in the stack-up and a low propagation velocity. The frequency dependent model and the measurements arc found to correlate well in frequency and time-domains.
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Key words
Signal integrity,on-die interconnects,slow-wave,correlation
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