<ol id="9rndh"></ol>

    <dl id="9rndh"></dl>

    <address id="9rndh"><big id="9rndh"><th id="9rndh"></th></big></address>

            <noframes id="9rndh">

            Welcome to visit Beijing Beihua New Rubber Special Material Technology Co., Ltd.官網網站!

            phone

            010-64442309

            address:Room 215, North Anhua Building, No. 8 Yinghua West Street, Chaoyang District, Beijing

            fax:+86-010-64439746-801
            電話:+86 13810696297(綜合業務部經理 賀磊) 

            Filing number application

            技術支持

            >
            >
            >
            Principle of electromagnetic shielding
            產品名稱

            Principle of electromagnetic shielding

            沒有此類產品
            產品描述

            22.png

                                            Figure 1 Schematic diagram of electromagnetic shielding principle


            Electromagnetic shielding is to limit the transmission of electromagnetic energy from one side of the shielding material to the other side. When the electromagnetic wave reaches the surface of the shielding material, there are usually three different mechanisms for attenuation: one is the reflection attenuation at the incident surface; the other is the attenuation of the electromagnetic wave that enters the shield without being reflected by the material; the third is inside the shield Attenuation of multiple reflections. According to Schelkunoff's electromagnetic wave theory, the total shielding effect of electromagnetic waves passing through the shielding material can be calculated as follows:


             

            (1)


             

            Where: SE is electromagnetic shielding effect, dB; R is surface single reflection attenuation, dB; A is absorption attenuation, dB; B is internal multiple reflection attenuation (only meaningful when A<15dB), dB.


             

            未找到相應參數組,請于后臺屬性模板中添加
            暫未實現,敬請期待
            暫未實現,敬請期待

            Product Center

            ·   
            无码精品日韩专区第一页,97se亚洲综合自在线,高清无码在线观看,欧美另类小说偷拍激情,伊人色综合视频一区二区三区