文献类型：期刊文献

英文题名：PROPERTIES OF ELECTROMAGNETIC SHIELDING CASE MADE OF PLYWOOD LAMINATED WITH CONDUCTIVE SHEETS

作者：Lu, Keyang[1] Yuan, Quanping[1] Fu, Feng[1] Zhang, Yaoming[1] Hou, Junfeng[1,2]

第一作者：Lu, Keyang

通信作者：Fu, F[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Zhejiang Agr & Forestry Univ, Coll Engn, Linan, Peoples R China

年份：2014

卷号：59

期号：4

起止页码：547-555

外文期刊名：WOOD RESEARCH

收录：;EI(收录号：20160902018545);Scopus(收录号：2-s2.0-84944879829);WOS:【SCI-EXPANDED(收录号:WOS:000343372600003)】；

基金：The authors thank the industry special fund project (No. 201104004) for supporting this paper. We also greatly appreciated Professor Z. Cai (Project Leader, USDA Forest Products Laboratory) and Neil Gribbins (USDA Forest Products Laboratory) for their comprehensive review and suggestions for enhancing this paper.

语种：英文

外文关键词：Electromagnetic shielding case; electromagnetic shielding plywood; copper foil connection; electromagnetic compatibility; rectangular waveguide resonance; spherical dipole antenna

摘要：Electromagnetic shielding cases have been regarded as an adequate solution for electromagnetic interference problems. Most electromagnetic shielding cases are made of metal, conductive plastics and carbon materials. Wood-based electromagnetic shielding cases have gained high levels of public interests due to their availability, cost, and renewability. In this study, the case was constructed of electromagnetic shielding plywood connected by copper foil. Shielding properties of the case were evaluated using shielded room testing. It was found that shielding effectiveness of the case ranged from 30.01 to 43.89 dB (30 MHz to 1 GHz), which indicated it met the secondary shielding effectiveness requirements of general cases for electronic equipment and could be used under the high requirements of electromagnetic compatibility. The results also showed seam leakage between the sides of cases resulted in a decrease of electromagnetic shielding effectiveness. The longer the seam length, the lower the shielding performance was. In addition, it was observed that rectangular waveguide resonance had an obvious influence on the case, which led to a sharp decrease of shielding effectiveness at the frequency of 720 MHz.