Title

Return Path Discontinuity Analysis of an Edge Mount SMA Launch Structure in Multilayer Boards

Abstract

Return-path discontinuity of an edge-mount SubMiniature version A (SMA) launch structure in multilayer boards, widely used in high-frequency fixtures and boards, is analyzed, and a simple equation to quantitatively estimate the frequency bandwidth without signal distortions is proposed. The proposed equations are experimentally validated for various physical dimensions, and a simple circuit model is demonstrated to take the return-path discontinuity into account in the channel simulations. In addition, based on the understanding of the return current discontinuity, quantitative design guides are drawn and a technique using an edge plating to enhance the bandwidth up to 50 GHz is demonstrated.

Department(s)

Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Comments

This paper was supported in part by the National Science Foundation under Grant IIP-1440110.

Keywords and Phrases

De-embedding; Fixture; Launch structure; Multilayer high-speed board; SubMiniature version A (SMA) connector

International Standard Serial Number (ISSN)

0018-9375

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2018 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

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