1st Edition

Advanced Materials and Design for Electromagnetic Interference Shielding

By Xingcun Colin Tong Copyright 2009
    340 Pages 114 B/W Illustrations
    by CRC Press

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    With electromagnetic compliance (EMC) now a major factor in the design of all electronic products, it is crucial to understand how electromagnetic interference (EMI) shielding products are used in various industries. Focusing on the practicalities of this area, Advanced Materials and Design for Electromagnetic Interference Shielding comprehensively introduces the design guidelines, materials selection, characterization methodology, manufacturing technology, and future potential of EMI shielding.

    After an overview of EMI shielding theory and product design guidelines, the book extensively reviews the characterization methodology of EMI materials. Subsequent chapters focus on particular EMI shielding materials and component designs, including enclosures, metal-formed gaskets, conductive elastomer and flexible graphite components, conductive foam and ventilation structures, board-level shielding materials, composite materials and hybrid structures, absorber materials, grounding and cable-level shielding materials, and aerospace and nuclear shielding materials. The last chapter presents a perspective on future trends in EMI shielding materials and design.

    Offering detailed coverage on many important topics, this indispensable book illustrates the efficiency and reliability of a range of materials and design solutions for EMI shielding.

    Electromagnetic Interference Shielding Fundamentals and Design Guide

    Concepts of Electromagnetic Interference and Electromagnetic


    EMI Shielding Principles

    EMC Design Guidelines and EMI Shielding Methodology

    Characterization Methodology of EMI Shielding Materials

    Shielding Effectiveness Measurement

    Electrical and Thermal Conductivities

    Permeability and Permittivity

    Mechanical Properties

    Surface Finish and Contact Interface Compatibility

    Formability and Manufacturability

    Environmental Performance Evaluation

    EMI Shielding Enclosure and Access

    Enclosure Design and Materials Selection

    Magnetic Field Shielding Enclosure

    Shielding Enclosure Integrity

    Specialized Materials Used for Shielding Enclosure

    Metal-Formed EMI Gaskets and Connectors


    Metal Strip Selection and Performance Requirement

    Copper Beryllium Alloys

    Copper–Nickel–Tin Spinodal Alloys

    Copper–Titanium Alloy

    Stainless Steel

    Other Materials Options

    Design Guideline of Metal Gaskets and Connectors

    Fabrication Process and Types of Metal Gaskets and Connectors

    Mounting Methods and Surface Mating Assurance

    Conductive Elastomer and Flexible Graphite Gaskets


    Raw Material Selection and Conductive Elastomer Fabrication

    Conduction Mechanism and Processing Optimization of Conductive Elastomer Materials

    Conductive Elastomer Gasket Design Guideline

    Conductive Elastomer Gasket Fabrication

    Conductive Elastomer Gasket Installation and Application

    Comparable Flexible Graphite Gaskets

    Conductive Foam and Ventilation Structure


    Waveguide Aperture and Ventilation Panel

    Conductive Foam and Integral Window Structure

    Metallized Fabrics and Fabric-Over-Foam

    Board-Level Shielding Materials and Components


    Board-Level Shielding Design and Materials Selection

    Board-Level Shielding Components and Their Manufacturing Technology

    Conductive Coating Methods Used for EMI Shielding Components

    Board-Level Shielding with Enhanced Heat Dissipating

    Composite Materials and Hybrid Structures for EMI Shielding


    Knitted Wire/Elastomer Gaskets

    EMI Shielding Tapes

    Conductive Fiber/Whisker-Reinforced Composites

    Hybrid Flexible Structures for EMI Shielding

    Electroless Metal Deposition for Composite Shielding Materials

    Absorber Materials


    Microwave Absorber Materials

    Anechoic Chambers

    Dielectric Materials for Absorber Applications

    Electromagnetic Wave Absorbers

    Absorbing Materials Selection and Absorber Applications

    Grounding and Cable-Level Shielding Materials


    Cable Assembly and Its EMI Shielding Design

    Cable-Level Shielding Materials

    Bonding and Grounding

    Special Shielding Materials in Aerospace and Nuclear Industries


    Lightweight Shielding Materials for Aerospace Applications

    Radiation Shielding for Space Power Systems

    Nuclear Shielding Materials

    Perspectives and Future Trends


    Early Design-in for EMC and Optimal Design of EMI Shielding

    Advanced Materials Selection for EMI Shielding

    Future Trends and Applications


    A Summary and References appear at the end of each chapter.


    Xingcun Colin Tong