Distributed-Physical-Based Transmission-Line Model of PCIe5 Connector for SI Fast Diagnosis

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https://hdl.handle.net/2142/117168 Copy

Description

Title

Distributed-Physical-Based Transmission-Line Model of PCIe5 Connector for SI Fast Diagnosis

Issue Date

2023-02-01

Keyword(s)

• 5G
• PCIe
• Signal Integrity
• Interconnects
• High-Speed Link Design

Abstract

In this work, we developed a physical-based transmission line model (PBTL) to not only perform fast simulation but to assist signal integrity diagnosis for high-speed multichannel and differential electrical links. It is a long-standing challenge to model the 3D interconnects in both accurate and fast way in high-speed regime. With increasing frequency, the discontinuity and the coupling become critical to the electrical performance of the connector and lumped model are no longer valid for electrically-long structures. The commonly used full-wave simulation requires intense computation and limits design turn-around times. PBTL is developed as a complementary tool to enable fast simulation and reduces design-diagnosis cycle times with physical-based insights and understandings. Identification of SI root causes is achieved with help of PBTL segments formulated based on physical model decomposition. PBTL method also provides excellent flexibility in design-optimization as only the related PBTL segment needs to be tuned according to design variations instead of redoing the FEM simulation. In addition, different loading situations of the connectors are modeled in PBTL and compared with the FEM simulated counterparts. PCIe 5.0 connector is used as a case study to demonstrate the capability of PBTL with highly accurate performance estimation up to 64 GHz.

Publisher

DesignCon 2023

Type of Resource

• text
• still image

Language

en

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